gnu: Convert all rust crates to new format.

* gnu/packages/crates-io.scm: Rename all packages to contain version
string.
[source]: Rename all downloaded files to use '.crate'.
[arguments]: Remove all cargo-inputs and cargo-development-inputs.
Comment out all custom phases to link to external libraries.
[native-inputs, inputs]: Comment out all inputs.
[properties]: Mark all packages hidden.

1 files changed, 693 insertions, 1144 deletions

diff --git a/gnu/packages/crates-io.scm b/gnu/packages/crates-io.scm
index 51d9363b55..7b34b70600 100644
--- a/gnu/packages/crates-io.scm
+++ b/gnu/packages/crates-io.scm
@@ -24,24 +24,13 @@
   #:use-module (guix build-system cargo)
   #:use-module (guix download)
   #:use-module ((guix licenses) #:prefix license:)
-  #:use-module (guix packages)
-  #:use-module (gnu packages compression)
-  #:use-module (gnu packages curl)
-  #:use-module (gnu packages gcc)
-  #:use-module (gnu packages jemalloc)
-  #:use-module (gnu packages llvm)
-  #:use-module (gnu packages maths)
-  #:use-module (gnu packages pkg-config)
-  #:use-module (gnu packages ssh)
-  #:use-module (gnu packages tls)
-  #:use-module (gnu packages version-control)
-  #:use-module (gnu packages web))
+  #:use-module (guix packages))
 
 ;;;
 ;;; Please: Try to add new module packages in alphabetic order.
 ;;;
 
-(define-public rust-adler32
+(define-public rust-adler32-1.0
   (package
     (name "rust-adler32")
     (version "1.0.3")
@@ -50,22 +39,21 @@
         (method url-fetch)
         (uri (crate-uri "adler32" version))
         (file-name
-          (string-append name "-" version ".tar.gz"))
+          (string-append name "-" version ".crate"))
         (sha256
           (base32
             "0p7fxlnks9l7p7rwfqi7aqgnk2bps5zc0rjiw00mdw19nnbjjlky"))))
     (build-system cargo-build-system)
-    (arguments
-     `(#:cargo-development-inputs (("rust-rand" ,rust-rand))))
     (home-page "https://github.com/remram44/adler32-rs")
     (synopsis "Implementation of the Adler32 rolling hash algorithm")
     (description
      "This library is an implementation of the Adler32 rolling hash algorithm in
 the Rust programming language.")
+    (properties '((hidden? . #t)))
     (license (list license:bsd-3
                    license:zlib))))
 
-(define-public rust-ansi-term
+(define-public rust-ansi-term-0.11
   (package
     (name "rust-ansi-term")
     (version "0.11.0")
@@ -73,31 +61,20 @@ the Rust programming language.")
       (origin
         (method url-fetch)
         (uri (crate-uri "ansi_term" version))
-        (file-name (string-append name "-" version ".tar.gz"))
+        (file-name (string-append name "-" version ".crate"))
         (sha256
          (base32
           "16wpvrghvd0353584i1idnsgm0r3vchg8fyrm0x8ayv1rgvbljgf"))))
     (build-system cargo-build-system)
-    (arguments
-     `(#:cargo-inputs
-       (("rust-winapi" ,rust-winapi))
-       #:phases
-       (modify-phases %standard-phases
-         (add-after 'unpack 'fix-tests
-           ;; https://github.com/ogham/rust-ansi-term/commit/5ff6af6f38790abcb3aafee1239286c10ef69576.patch
-           (lambda _
-             (substitute* "src/debug.rs"
-               (("^ *Blue") "        Blue,")
-               (("underline: false") "underline: false,"))
-             #t)))))
     (home-page "https://github.com/ogham/rust-ansi-term")
     (synopsis "Library for ANSI terminal colours and styles")
     (description
      "This is a library for controlling colours and formatting, such as red bold
 text or blue underlined text, on ANSI terminals.")
+    (properties '((hidden? . #t)))
     (license license:expat)))
 
-(define-public rust-antidote
+(define-public rust-antidote-1.0
   (package
     (name "rust-antidote")
     (version "1.0.0")
@@ -105,7 +82,7 @@ text or blue underlined text, on ANSI terminals.")
       (origin
         (method url-fetch)
         (uri (crate-uri "antidote" version))
-        (file-name (string-append name "-" version ".tar.gz"))
+        (file-name (string-append name "-" version ".crate"))
         (sha256
          (base32
           "19g2sw2qa2ibnh4x7j1snk46593jgx6y7rnvva496ynq61af5z9l"))))
@@ -115,10 +92,11 @@ text or blue underlined text, on ANSI terminals.")
     (description
     "These types expose identical APIs to the standard library @code{Mutex} and
 @code{RwLock} except that they do not return @code{PoisonError}s.")
+    (properties '((hidden? . #t)))
     (license (list license:asl2.0
                    license:expat))))
 
-(define-public rust-atty
+(define-public rust-atty-0.2
   (package
     (name "rust-atty")
     (version "0.2.13")
@@ -126,23 +104,19 @@ text or blue underlined text, on ANSI terminals.")
       (origin
         (method url-fetch)
         (uri (crate-uri "atty" version))
-        (file-name (string-append name "-" version ".tar.gz"))
+        (file-name (string-append name "-" version ".crate"))
         (sha256
          (base32
           "140sswp1bwqwc4zk80bxkbnfb3g936hgrb77g9g0k1zcld3wc0qq"))))
     (build-system cargo-build-system)
-    (arguments
-     `(#:cargo-inputs
-       (("rust-libc" ,rust-libc)
-        ("rust-winapi" ,rust-winapi))
-       #:tests? #f)) ; tests fail in our sandbox
     (home-page "https://github.com/softprops/atty")
     (synopsis "A simple interface for querying atty")
     (description
      "This package provides a simple interface for querying atty.")
+    (properties '((hidden? . #t)))
     (license license:expat)))
 
-(define-public rust-autocfg
+(define-public rust-autocfg-0.1
   (package
     (name "rust-autocfg")
     (version "0.1.5")
@@ -150,7 +124,7 @@ text or blue underlined text, on ANSI terminals.")
       (origin
         (method url-fetch)
         (uri (crate-uri "autocfg" version))
-        (file-name (string-append name "-" version ".tar.gz"))
+        (file-name (string-append name "-" version ".crate"))
         (sha256
          (base32
           "0asl6fnc35yk5l2rxwhp25v128jgm45dp754h9z8x51b6n90w4r2"))))
@@ -161,10 +135,11 @@ text or blue underlined text, on ANSI terminals.")
 code based on compiler support.  Code snippets are dynamically tested to see
 if the @code{rustc} will accept them, rather than hard-coding specific version
 support.")
+    (properties '((hidden? . #t)))
     (license (list license:asl2.0
                    license:expat))))
 
-(define-public rust-backtrace-sys
+(define-public rust-backtrace-sys-0.1
   (package
     (name "rust-backtrace-sys")
     (version "0.1.31")
@@ -172,28 +147,20 @@ support.")
       (origin
         (method url-fetch)
         (uri (crate-uri "backtrace-sys" version))
-        (file-name (string-append name "-" version ".tar.gz"))
+        (file-name (string-append name "-" version ".crate"))
         (sha256
          (base32
           "0as2pk77br4br04daywhivpi1ixxb8y2c7f726kj849dxys31a42"))))
     (build-system cargo-build-system)
-    (arguments
-     `(#:cargo-inputs
-       (("rust-compiler-builtins"
-         ,rust-compiler-builtins)
-        ("rust-libc" ,rust-libc)
-        ("rust-rustc-std-workspace-core"
-         ,rust-rustc-std-workspace-core))
-       #:cargo-development-inputs
-       (("rust-cc" ,rust-cc))))
     (home-page "https://github.com/rust-lang/backtrace-rs")
     (synopsis "Bindings to the libbacktrace gcc library")
     (description
      "This package provides bindings to the libbacktrace gcc library.")
+    (properties '((hidden? . #t)))
     (license (list license:asl2.0
                    license:expat))))
 
-(define-public rust-base-x
+(define-public rust-base-x-0.2
   (package
     (name "rust-base-x")
     (version "0.2.5")
@@ -201,22 +168,18 @@ support.")
       (origin
         (method url-fetch)
         (uri (crate-uri "base-x" version))
-        (file-name (string-append name "-" version ".tar.gz"))
+        (file-name (string-append name "-" version ".crate"))
         (sha256
          (base32
           "0hv4y5cdhv6bk0ghk2434clw8v4mmk5cc9lsh6qrpri92zlfmx3n"))))
     (build-system cargo-build-system)
-    (arguments
-     `(#:cargo-development-inputs
-       (("rust-bencher" ,rust-bencher)
-        ("rust-json" ,rust-json)
-        ("rust-rand" ,rust-rand-0.3))))
     (home-page "https://github.com/OrKoN/base-x-rs")
     (synopsis "Encode/decode any base")
     (description "This library provides for encoding and decoding any base.")
+    (properties '((hidden? . #t)))
     (license license:expat)))
 
-(define-public rust-bencher
+(define-public rust-bencher-0.1
   (package
     (name "rust-bencher")
     (version "0.1.5")
@@ -224,7 +187,7 @@ support.")
       (origin
         (method url-fetch)
         (uri (crate-uri "bencher" version))
-        (file-name (string-append name "-" version ".tar.gz"))
+        (file-name (string-append name "-" version ".crate"))
         (sha256
          (base32
           "1x8p2xblgqssay8cdykp5pkfc0np0jk5bs5cx4f5av097aav9zbx"))))
@@ -235,10 +198,11 @@ support.")
 benchmark runner to Rust stable releases.  Supports running benchmarks and
 filtering based on the name.  Benchmark execution works exactly the same way
 and no more (caveat: black_box is still missing!).")
+    (properties '((hidden? . #t)))
     (license (list license:asl2.0
                    license:expat))))
 
-(define-public rust-bitflags
+(define-public rust-bitflags-1
   (package
     (name "rust-bitflags")
     (version "1.1.0")
@@ -246,7 +210,7 @@ and no more (caveat: black_box is still missing!).")
       (origin
         (method url-fetch)
         (uri (crate-uri "bitflags" version))
-        (file-name (string-append name "-" version ".tar.gz"))
+        (file-name (string-append name "-" version ".crate"))
         (sha256
          (base32
           "1zc1qb1hwsnl2d8rhzicsv9kqd5b2hwbrscrcfw5as4sfr35659x"))))
@@ -255,10 +219,11 @@ and no more (caveat: black_box is still missing!).")
     (synopsis "Macro to generate structures which behave like bitflags")
     (description "This package provides a macro to generate structures which
 behave like a set of bitflags.")
+    (properties '((hidden? . #t)))
     (license (list license:asl2.0
                    license:expat))))
 
-(define-public rust-blas-sys
+(define-public rust-blas-sys-0.7
   (package
     (name "rust-blas-sys")
     (version "0.7.1")
@@ -266,21 +231,20 @@ behave like a set of bitflags.")
       (origin
         (method url-fetch)
         (uri (crate-uri "blas-sys" version))
-        (file-name (string-append name "-" version ".tar.gz"))
+        (file-name (string-append name "-" version ".crate"))
         (sha256
          (base32
           "0h14zjycwc76v15h8qll9z1xiryvmpvsb5gam97pqpdjrrwv5c8k"))))
     (build-system cargo-build-system)
-    (arguments
-     `(#:cargo-inputs (("rust-libc" ,rust-libc))))
     (home-page "https://github.com/blas-lapack-rs/blas-sys")
     (synopsis "Bindings to BLAS (Fortran)")
     (description
      "Ths package provides bindings to BLAS (Fortran).")
+    (properties '((hidden? . #t)))
     (license (list license:asl2.0
                    license:expat))))
 
-(define-public rust-cargon
+(define-public rust-cargon-0.0
   (package
     (name "rust-cargon")
     (version "0.0.1")
@@ -288,22 +252,20 @@ behave like a set of bitflags.")
       (origin
         (method url-fetch)
         (uri (crate-uri "cargon" version))
-        (file-name (string-append name "-" version ".tar.gz"))
+        (file-name (string-append name "-" version ".crate"))
         (sha256
          (base32
           "1cszlab7jk736p0lb50ag4l9nv72m7j41bwrmygl0lr4iz0350w2"))))
     (build-system cargo-build-system)
-    (arguments
-     `(#:cargo-inputs
-       (("rust-gcc" ,rust-gcc))))
     (home-page "https://github.com/bryant/argon2rs")
     (synopsis "Thin wrapper around the Argon2 C library")
     (description
      "This package provides a thin wrapper around the Argon2 C library.  It is
 used in argon2rs' bench suite.")
+    (properties '((hidden? . #t)))
     (license license:wtfpl2)))
 
-(define-public rust-cblas-sys
+(define-public rust-cblas-sys-0.1
   (package
     (name "rust-cblas-sys")
     (version "0.1.4")
@@ -311,21 +273,20 @@ used in argon2rs' bench suite.")
       (origin
         (method url-fetch)
         (uri (crate-uri "cblas-sys" version))
-        (file-name (string-append name "-" version ".tar.gz"))
+        (file-name (string-append name "-" version ".crate"))
         (sha256
          (base32
           "0rgsn3klhhh09d8qf3b87zl4rwk93l2g0qzh9hhb0lff5kcfrzmn"))))
     (build-system cargo-build-system)
-    (arguments
-     `(#:cargo-inputs (("rust-libc" ,rust-libc))))
     (home-page "https://github.com/blas-lapack-rs/cblas-sys")
     (synopsis "Bindings to CBLAS (C)")
     (description
      "The package provides bindings to CBLAS (C).")
+    (properties '((hidden? . #t)))
     (license (list license:asl2.0
                    license:expat))))
 
-(define-public rust-cc
+(define-public rust-cc-1.0
   (package
     (name "rust-cc")
     (version "1.0.41")
@@ -333,38 +294,22 @@ used in argon2rs' bench suite.")
       (origin
         (method url-fetch)
         (uri (crate-uri "cc" version))
-        (file-name (string-append name "-" version ".tar.gz"))
+        (file-name (string-append name "-" version ".crate"))
         (sha256
          (base32
           "1zxzd559dbbf1iwdzmkj7czapzccs17kqqmsj9ayijpdix5rrbld"))))
     (build-system cargo-build-system)
-    (arguments
-     `(;#:cargo-inputs
-       ;(("rust-rayon" ,rust-rayon))
-       #:cargo-development-inputs
-       (("rust-tempdir" ,rust-tempdir))
-       #:phases
-       (modify-phases %standard-phases
-         (add-after 'unpack 'remove-optional-deps
-           (lambda _
-             (substitute* "Cargo.toml.orig"
-               ((".*optional.*") "\n")
-               ((".*features.*") "")
-               ((".*parallel.*") ""))
-             (delete-file "Cargo.toml")
-             (copy-file "Cargo.toml.orig" "Cargo.toml")
-             #t)))
-       #:tests? #f)) ; Tests require cc-test from git repo.
     (home-page "https://github.com/alexcrichton/cc-rs")
     (synopsis "Invoke the native C compiler")
     (description
      "This package provides a build-time dependency for Cargo build scripts to
 assist in invoking the native C compiler to compile native C code into a static
 archive to be linked into Rustcode.")
+    (properties '((hidden? . #t)))
     (license (list license:asl2.0
                    license:expat))))
 
-(define-public rust-cfg-if
+(define-public rust-cfg-if-0.1
   (package
     (name "rust-cfg-if")
     (version "0.1.9")
@@ -372,7 +317,7 @@ archive to be linked into Rustcode.")
       (origin
         (method url-fetch)
         (uri (crate-uri "cfg-if" version))
-        (file-name (string-append name "-" version ".tar.gz"))
+        (file-name (string-append name "-" version ".crate"))
         (sha256
          (base32
           "0csygklgz3ybpr0670rkip49zh76m43ar3k7xgypkzbzrwycx1ml"))))
@@ -382,10 +327,11 @@ archive to be linked into Rustcode.")
     (description "This package provides a macro to ergonomically define an item
 depending on a large number of #[cfg] parameters.  Structured like an
 @code{if-else} chain, the first matching branch is the item that gets emitted.")
+    (properties '((hidden? . #t)))
     (license (list license:asl2.0
                    license:expat))))
 
-(define-public rust-clang-sys
+(define-public rust-clang-sys-0.28
   (package
     (name "rust-clang-sys")
     (version "0.28.1")
@@ -393,64 +339,44 @@ depending on a large number of #[cfg] parameters.  Structured like an
       (origin
         (method url-fetch)
         (uri (crate-uri "clang-sys" version))
-        (file-name (string-append name "-" version ".tar.gz"))
+        (file-name (string-append name "-" version ".crate"))
         (sha256
          (base32
           "0ls8zcqi5bmmrvrk3b6r1ym4wlivinbv590d2dvg2xn9f44mbpl1"))))
     (build-system cargo-build-system)
-    (arguments
-     `(#:cargo-inputs
-       (("rust-glob" ,rust-glob)
-        ("rust-libc" ,rust-libc)
-        ("rust-libloading" ,rust-libloading))
-       #:cargo-development-inputs
-       (("rust-glob" ,rust-glob))
-       #:phases
-       (modify-phases %standard-phases
-         (add-after 'unpack 'set-environmental-variable
-           (lambda* (#:key inputs #:allow-other-keys)
-             (let ((clang (assoc-ref inputs "libclang")))
-               (setenv "LIBCLANG_PATH"
-                       (string-append clang "/lib")))
-             #t)))))
-    (inputs
-     `(("libclang" ,clang)))
+    ;(arguments
+    ; `(#:phases
+    ;   (modify-phases %standard-phases
+    ;     (add-after 'unpack 'set-environmental-variable
+    ;       (lambda* (#:key inputs #:allow-other-keys)
+    ;         (let ((clang (assoc-ref inputs "libclang")))
+    ;           (setenv "LIBCLANG_PATH"
+    ;                   (string-append clang "/lib")))
+    ;         #t)))))
+    ;(inputs
+    ; `(("libclang" ,clang)))
     (home-page "https://github.com/KyleMayes/clang-sys")
     (synopsis "Rust bindings for libclang")
     (description
      "This package provides Rust bindings for @code{libclang}.")
+    (properties '((hidden? . #t)))
     (license license:asl2.0)))
 
 (define-public rust-clang-sys-0.26
   (package
-    (inherit rust-clang-sys)
+    (inherit rust-clang-sys-0.28)
     (name "rust-clang-sys")
     (version "0.26.4")
     (source
       (origin
         (method url-fetch)
         (uri (crate-uri "clang-sys" version))
-        (file-name (string-append name "-" version ".tar.gz"))
-        (sha256
-         (base32
-          "1r50dwy5hj5gq07dn0qf8222d07qv0970ymx0j8n9779yayc3w3f"))))
-    (arguments
-     `(#:cargo-inputs
-       (("rust-glob" ,rust-glob-0.2)
-        ("rust-libc" ,rust-libc)
-        ("rust-libloading" ,rust-libloading))
-       #:cargo-development-inputs
-       (("rust-glob" ,rust-glob-0.2))
-       #:phases
-       (modify-phases %standard-phases
-         (add-after 'unpack 'set-environmental-variable
-           (lambda* (#:key inputs #:allow-other-keys)
-             (let ((clang (assoc-ref inputs "libclang")))
-               (setenv "LIBCLANG_PATH"
-                       (string-append clang "/lib")))
-            #t)))))))
-
-(define-public rust-clicolors-control
+        (file-name (string-append name "-" version ".crate"))
+        (sha256
+         (base32
+          "1r50dwy5hj5gq07dn0qf8222d07qv0970ymx0j8n9779yayc3w3f"))))))
+
+(define-public rust-clicolors-control-1.0
   (package
     (name "rust-clicolors-control")
     (version "1.0.0")
@@ -458,25 +384,20 @@ depending on a large number of #[cfg] parameters.  Structured like an
       (origin
         (method url-fetch)
         (uri (crate-uri "clicolors-control" version))
-        (file-name (string-append name "-" version ".tar.gz"))
+        (file-name (string-append name "-" version ".crate"))
         (sha256
          (base32
           "1y80cgarxhrd1bz5yjm81r444v6flvy36aaxrrsac0yhfd6gvavk"))))
     (build-system cargo-build-system)
-    (arguments
-     `(#:cargo-inputs
-       (("rust-atty" ,rust-atty)
-        ("rust-lazy-static" ,rust-lazy-static)
-        ("rust-libc" ,rust-libc)
-        ("rust-winapi" ,rust-winapi))))
     (home-page "https://github.com/mitsuhiko/clicolors-control")
     (synopsis "Common utility library to control CLI colorization")
     (description
      "This package provides a common utility library to control CLI
 colorization.")
+    (properties '((hidden? . #t)))
     (license license:expat)))
 
-(define-public rust-cloudabi
+(define-public rust-cloudabi-0.0
   (package
     (name "rust-cloudabi")
     (version "0.0.3")
@@ -484,21 +405,19 @@ colorization.")
       (origin
         (method url-fetch)
         (uri (crate-uri "cloudabi" version))
-        (file-name (string-append name "-" version ".tar.gz"))
+        (file-name (string-append name "-" version ".crate"))
         (sha256
          (base32
           "0kxcg83jlihy0phnd2g8c2c303px3l2p3pkjz357ll6llnd5pz6x"))))
     (build-system cargo-build-system)
-    (arguments
-     `(#:cargo-inputs
-       (("rust-bitflags" ,rust-bitflags))))
     (home-page "https://nuxi.nl/cloudabi/")
     (synopsis "Low level interface to CloudABI")
     (description
      "Low level interface to CloudABI.  Contains all syscalls and related types.")
+    (properties '((hidden? . #t)))
     (license license:bsd-2)))
 
-(define-public rust-cmake
+(define-public rust-cmake-0.1
   (package
     (name "rust-cmake")
     (version "0.1.42")
@@ -506,25 +425,24 @@ colorization.")
       (origin
         (method url-fetch)
         (uri (crate-uri "cmake" version))
-        (file-name (string-append name "-" version ".tar.gz"))
+        (file-name (string-append name "-" version ".crate"))
         (sha256
          (base32
           "0qkwibkvx5xjazvv9v8gvdlpky2jhjxvcz014nrixgzqfyv2byw1"))))
     (build-system cargo-build-system)
-    (arguments
-     `(#:cargo-inputs (("rust-cc" ,rust-cc))))
     (home-page "https://github.com/alexcrichton/cmake-rs")
     (synopsis "Rust build dependency for running cmake")
     (description
      "This package provides a build dependency for running @code{cmake} to build
 a native library.  The CMake executable is assumed to be @code{cmake} unless the
 CMAKE environmental variable is set.")
+    (properties '((hidden? . #t)))
     (license (list license:asl2.0
                    license:expat))))
 
 ;; This package requires features which are unavailable
 ;; on the stable releases of Rust.
-(define-public rust-compiler-builtins
+(define-public rust-compiler-builtins-0.1
   (package
     (name "rust-compiler-builtins")
     (version "0.1.19")
@@ -532,27 +450,22 @@ CMAKE environmental variable is set.")
       (origin
         (method url-fetch)
         (uri (crate-uri "compiler_builtins" version))
-        (file-name (string-append name "-" version ".tar.gz"))
+        (file-name (string-append name "-" version ".crate"))
         (sha256
          (base32
           "1fpabpmg8paj4r5a37vmidh1jx1b7a6ilxm4s3xsxczx27ybjcjf"))))
     (build-system cargo-build-system)
-    (arguments
-     `(#:cargo-inputs
-       (("rust-cc" ,rust-cc)
-        ("rust-rustc-std-workspace-core"
-         ,rust-rustc-std-workspace-core))))
     (home-page "https://github.com/rust-lang-nursery/compiler-builtins")
     (synopsis "Compiler intrinsics used by the Rust compiler")
     (description
      "This package provides compiler intrinsics used by the Rust compiler.  This
 package is primarily useful when building the @code{core} crate yourself and you
 need compiler-rt intrinsics.")
-    (properties `((hidden? . #t)))
+    (properties '((hidden? . #t)))
     (license (list license:asl2.0
                    license:expat))))
 
-(define-public rust-constant-time-eq
+(define-public rust-constant-time-eq-0.1
   (package
     (name "rust-constant-time-eq")
     (version "0.1.4")
@@ -560,7 +473,7 @@ need compiler-rt intrinsics.")
      (origin
        (method url-fetch)
        (uri (crate-uri "constant_time_eq" version))
-       (file-name (string-append name "-" version ".tar.gz"))
+       (file-name (string-append name "-" version ".crate"))
        (sha256
         (base32
          "083icpr9xb72rrdxw3p4068dcspn6ai22jy7rhl2a8grfz448nlr"))))
@@ -571,9 +484,10 @@ need compiler-rt intrinsics.")
     (description
      "This package compares two equal-sized byte strings in constant time.
 It is inspired by the Linux kernel's @code{crypto_memneq}.")
+    (properties '((hidden? . #t)))
     (license license:cc0)))
 
-(define-public rust-core-foundation-sys
+(define-public rust-core-foundation-sys-0.6
   (package
     (name "rust-core-foundation-sys")
     (version "0.6.2")
@@ -581,7 +495,7 @@ It is inspired by the Linux kernel's @code{crypto_memneq}.")
       (origin
         (method url-fetch)
         (uri (crate-uri "core-foundation-sys" version))
-        (file-name (string-append name "-" version ".tar.gz"))
+        (file-name (string-append name "-" version ".crate"))
         (sha256
          (base32
           "0fzsw1j9g1x598yhwklg59l15hwzc0pyvs01w9fg2kin4598mjp7"))))
@@ -590,10 +504,11 @@ It is inspired by the Linux kernel's @code{crypto_memneq}.")
     (synopsis "Bindings to Core Foundation for OS X")
     (description
      "Bindings to Core Foundation for OS X.")
+    (properties '((hidden? . #t)))
     (license (list license:asl2.0
                    license:expat))))
 
-(define-public rust-curl-sys
+(define-public rust-curl-sys-0.4
   (package
     (name "rust-curl-sys")
     (version "0.4.20")
@@ -601,44 +516,34 @@ It is inspired by the Linux kernel's @code{crypto_memneq}.")
       (origin
         (method url-fetch)
         (uri (crate-uri "curl-sys" version))
-        (file-name (string-append name "-" version ".tar.gz"))
+        (file-name (string-append name "-" version ".crate"))
         (sha256
          (base32
           "02542zmvl3fpdqf7ai4cqnamm4albx9j645dkjx5qr1myq8ax42y"))))
     (build-system cargo-build-system)
-    (arguments
-     `(#:cargo-inputs
-       (("rust-libc" ,rust-libc)
-        ("rust-libnghttp2-sys" ,rust-libnghttp2-sys)
-        ("rust-libz-sys" ,rust-libz-sys)
-        ("rust-openssl-sys" ,rust-openssl-sys)
-        ("rust-winapi" ,rust-winapi))
-       #:cargo-development-inputs
-       (("rust-cc" ,rust-cc)
-        ("rust-pkg-config" ,rust-pkg-config)
-        ("rust-openssl-src" ,rust-openssl-src)
-        ("rust-vcpkg" ,rust-vcpkg))
-        #:phases
-       (modify-phases %standard-phases
-        (add-after 'unpack 'find-openssl
-          (lambda* (#:key inputs #:allow-other-keys)
-            (let ((openssl (assoc-ref inputs "openssl")))
-              (setenv "OPENSSL_DIR" openssl))
-            #t)))))
-    (native-inputs
-     `(("pkg-config" ,pkg-config)))
-    (inputs
-     `(("curl" ,curl)
-       ("nghttp2" ,nghttp2)
-       ("openssl" ,openssl)
-       ("zlib" ,zlib)))
+    ;(arguments
+    ; `(#:phases
+    ;   (modify-phases %standard-phases
+    ;    (add-after 'unpack 'find-openssl
+    ;      (lambda* (#:key inputs #:allow-other-keys)
+    ;        (let ((openssl (assoc-ref inputs "openssl")))
+    ;          (setenv "OPENSSL_DIR" openssl))
+    ;        #t)))))
+    ;(native-inputs
+    ; `(("pkg-config" ,pkg-config)))
+    ;(inputs
+    ; `(("curl" ,curl)
+    ;   ("nghttp2" ,nghttp2)
+    ;   ("openssl" ,openssl)
+    ;   ("zlib" ,zlib)))
     (home-page "https://github.com/alexcrichton/curl-rust")
     (synopsis "Native bindings to the libcurl library")
     (description
      "This package provides native bindings to the @code{libcurl} library.")
+    (properties '((hidden? . #t)))
     (license license:expat)))
 
-(define-public rust-data-encoding
+(define-public rust-data-encoding-2.1
   (package
     (name "rust-data-encoding")
     (version "2.1.2")
@@ -646,7 +551,7 @@ It is inspired by the Linux kernel's @code{crypto_memneq}.")
       (origin
         (method url-fetch)
         (uri (crate-uri "data-encoding" version))
-        (file-name (string-append name "-" version ".tar.gz"))
+        (file-name (string-append name "-" version ".crate"))
         (sha256
          (base32
           "15xd6afhsjl08285piwczrafmckpp8i29padj8v12xhahshprx7l"))))
@@ -655,10 +560,11 @@ It is inspired by the Linux kernel's @code{crypto_memneq}.")
     (synopsis "Efficient and customizable data-encoding functions")
     (description
      "This library provides encodings for many different common cases, including
-hexadecimal, bas32, and base64.")
+hexadecimal, base32, and base64.")
+    (properties '((hidden? . #t)))
     (license license:expat)))
 
-(define-public rust-defmac
+(define-public rust-defmac-0.2
   (package
     (name "rust-defmac")
     (version "0.2.0")
@@ -666,7 +572,7 @@ hexadecimal, bas32, and base64.")
       (origin
         (method url-fetch)
         (uri (crate-uri "defmac" version))
-        (file-name (string-append name "-" version ".tar.gz"))
+        (file-name (string-append name "-" version ".crate"))
         (sha256
          (base32
           "01ff3jdmcc5waffkwllndnx5hsn414r7x1rq4ib73n7awsyzxkxv"))))
@@ -674,24 +580,25 @@ hexadecimal, bas32, and base64.")
     (home-page "https://github.com/bluss/defmac")
     (synopsis "Macro to define lambda-like macros inline")
     (description "A macro to define lambda-like macros inline.")
+    (properties '((hidden? . #t)))
     (license (list license:asl2.0
                    license:expat))))
 
 (define-public rust-defmac-0.1
   (package
-    (inherit rust-defmac)
+    (inherit rust-defmac-0.2)
     (name "rust-defmac")
     (version "0.1.3")
     (source
       (origin
         (method url-fetch)
         (uri (crate-uri "defmac" version))
-        (file-name (string-append name "-" version ".tar.gz"))
+        (file-name (string-append name "-" version ".crate"))
         (sha256
          (base32
           "17giv0n0n1r64z0dahfvkjy3ys517jxyhs8sd9lmgvcljpjyryxa"))))))
 
-(define-public rust-dirs
+(define-public rust-dirs-1.0
   (package
     (name "rust-dirs")
     (version "1.0.3")
@@ -699,15 +606,11 @@ hexadecimal, bas32, and base64.")
       (origin
         (method url-fetch)
         (uri (crate-uri "dirs" version))
-        (file-name (string-append name "-" version ".tar.gz"))
+        (file-name (string-append name "-" version ".crate"))
         (sha256
          (base32
           "02vigc566z5i6n9wr2x8sch39qp4arn89xhhrh18fhpm3jfc0ygn"))))
     (build-system cargo-build-system)
-    (arguments
-     `(#:cargo-inputs
-       (("rust-libc" ,rust-libc)
-        ("rust-winapi" ,rust-winapi))))
     (home-page "https://github.com/soc/dirs-rs")
     (synopsis "Abstractions for standard locations for various platforms")
     (description
@@ -716,9 +619,10 @@ platform-specific standard locations of directories for config, cache and other
 data on Linux, Windows, macOS and Redox by leveraging the mechanisms defined by
 the XDG base/user directory specifications on Linux, the Known Folder API on
 Windows, and the Standard Directory guidelines on macOS.")
+    (properties '((hidden? . #t)))
     (license (list license:expat license:asl2.0))))
 
-(define-public rust-discard
+(define-public rust-discard-1.0
   (package
     (name "rust-discard")
     (version "1.0.4")
@@ -726,7 +630,7 @@ Windows, and the Standard Directory guidelines on macOS.")
       (origin
         (method url-fetch)
         (uri (crate-uri "discard" version))
-        (file-name (string-append name "-" version ".tar.gz"))
+        (file-name (string-append name "-" version ".crate"))
         (sha256
          (base32
           "1h67ni5bxvg95s91wgicily4ix7lcw7cq0a5gy9njrybaibhyb91"))))
@@ -736,9 +640,10 @@ Windows, and the Standard Directory guidelines on macOS.")
     (description "There are situations where you need to intentionally leak some
 memory but not other memory.  This package provides a discard trait which allows
 for intentionally leaking memory")
+    (properties '((hidden? . #t)))
     (license license:expat)))
 
-(define-public rust-doc-comment
+(define-public rust-doc-comment-0.3
   (package
     (name "rust-doc-comment")
     (version "0.3.1")
@@ -746,7 +651,7 @@ for intentionally leaking memory")
       (origin
         (method url-fetch)
         (uri (crate-uri "doc-comment" version))
-        (file-name (string-append name "-" version ".tar.gz"))
+        (file-name (string-append name "-" version ".crate"))
         (sha256
          (base32
           "15rsqxgarfpb1yim9sbp9yfgj7p2dq6v51c6bq1a62paii9ylgcj"))))
@@ -755,9 +660,10 @@ for intentionally leaking memory")
     (synopsis "Macro to generate doc comments")
     (description "This package provides a way to generate doc comments
 from macros.")
+    (properties '((hidden? . #t)))
     (license license:expat)))
 
-(define-public rust-dtoa
+(define-public rust-dtoa-0.4
   (package
     (name "rust-dtoa")
     (version "0.4.4")
@@ -765,7 +671,7 @@ from macros.")
       (origin
         (method url-fetch)
         (uri (crate-uri "dtoa" version))
-        (file-name (string-append name "-" version ".tar.gz"))
+        (file-name (string-append name "-" version ".crate"))
         (sha256
          (base32
           "0phbm7i0dpn44gzi07683zxaicjap5064w62pidci4fhhciv8mza"))))
@@ -774,24 +680,25 @@ from macros.")
     (synopsis "Fast functions for printing floating-point primitives")
     (description "This crate provides fast functions for printing
 floating-point primitives to an @code{io::Write}.")
+    (properties '((hidden? . #t)))
     (license (list license:asl2.0
                    license:expat))))
 
 (define-public rust-dtoa-0.2
   (package
-    (inherit rust-dtoa)
+    (inherit rust-dtoa-0.4)
     (name "rust-dtoa")
     (version "0.2.2")
     (source
       (origin
         (method url-fetch)
         (uri (crate-uri "dtoa" version))
-        (file-name (string-append name "-" version ".tar.gz"))
+        (file-name (string-append name "-" version ".crate"))
         (sha256
          (base32
           "0g96cap6si1g6wi62hsdk2fnj3sf5vd4i97zj6163j8hhnsl3n0d"))))))
 
-(define-public rust-fallible-iterator
+(define-public rust-fallible-iterator-0.2
   (package
     (name "rust-fallible-iterator")
     (version "0.2.0")
@@ -799,7 +706,7 @@ floating-point primitives to an @code{io::Write}.")
       (origin
         (method url-fetch)
         (uri (crate-uri "fallible-iterator" version))
-        (file-name (string-append name "-" version ".tar.gz"))
+        (file-name (string-append name "-" version ".crate"))
         (sha256
          (base32
           "1xq759lsr8gqss7hva42azn3whgrbrs2sd9xpn92c5ickxm1fhs4"))))
@@ -810,10 +717,11 @@ floating-point primitives to an @code{io::Write}.")
 crate provides implementations for @code{Box}, @code{Vec}, @code{BTreeMap}, and
 @code{BTreeSet}.  If the @code{std} feature is enabled, this crate additionally
 provides implementations for @code{HashMap} and @code{HashSet}.")
+    (properties '((hidden? . #t)))
     (license (list license:asl2.0
                    license:expat))))
 
-(define-public rust-filetime
+(define-public rust-filetime-0.2
   (package
     (name "rust-filetime")
     (version "0.2.7")
@@ -821,19 +729,11 @@ provides implementations for @code{HashMap} and @code{HashSet}.")
       (origin
         (method url-fetch)
         (uri (crate-uri "filetime" version))
-        (file-name (string-append name "-" version ".tar.gz"))
+        (file-name (string-append name "-" version ".crate"))
         (sha256
          (base32
           "0sflihq2l77xjrza7yjalnxsc7dxzg25rhzcfbd9vmyfah5kimvb"))))
     (build-system cargo-build-system)
-    (arguments
-     `(#:cargo-inputs
-       (("rust-cfg-if" ,rust-cfg-if)
-        ("rust-libc" ,rust-libc)
-        ("rust-redox-syscall" ,rust-redox-syscall)
-        ("rust-winapi" ,rust-winapi))
-       #:cargo-development-inputs
-       (("rust-tempdir" ,rust-tempdir))))
     (home-page "https://github.com/alexcrichton/filetime")
     (synopsis "Platform-agnostic accessors of timestamps in File metadata")
     (description
@@ -842,10 +742,11 @@ various timestamps of files in Rust.  This library takes into account
 cross-platform differences in terms of where the timestamps are located, what
 they are called, and how to convert them into a platform-independent
 representation.")
+    (properties '((hidden? . #t)))
     (license (list license:asl2.0
                    license:expat))))
 
-(define-public rust-findshlibs
+(define-public rust-findshlibs-0.5
   (package
     (name "rust-findshlibs")
     (version "0.5.0")
@@ -853,24 +754,21 @@ representation.")
       (origin
         (method url-fetch)
         (uri (crate-uri "findshlibs" version))
-        (file-name (string-append name "-" version ".tar.gz"))
+        (file-name (string-append name "-" version ".crate"))
         (sha256
          (base32
           "1n2vagn0q5yim32hxkwi1cjgp3yn1dm45p7z8nw6lapywihhs9mi"))))
     (build-system cargo-build-system)
-    (arguments
-     `(#:cargo-inputs
-       (("rust-lazy-static" ,rust-lazy-static)
-        ("rust-libc" ,rust-libc))))
     (home-page "https://github.com/gimli-rs/findshlibs")
     (synopsis "Find the set of shared libraries loaded in the current process")
     (description
      "Find the set of shared libraries loaded in the current process with a
 cross platform API.")
+    (properties '((hidden? . #t)))
     (license (list license:asl2.0
                    license:expat))))
 
-(define-public rust-fixedbitset
+(define-public rust-fixedbitset-0.1
   (package
     (name "rust-fixedbitset")
     (version "0.1.9")
@@ -878,7 +776,7 @@ cross platform API.")
       (origin
         (method url-fetch)
         (uri (crate-uri "fixedbitset" version))
-        (file-name (string-append name "-" version ".tar.gz"))
+        (file-name (string-append name "-" version ".crate"))
         (sha256
          (base32
           "0czam11mi80dbyhf4rd4lz0ihcf7vkfchrdcrn45wbs0h40dxm46"))))
@@ -886,10 +784,11 @@ cross platform API.")
     (home-page "https://github.com/petgraph/fixedbitset")
     (synopsis "FixedBitSet is a simple bitset collection")
     (description "FixedBitSet is a simple bitset collection.")
+    (properties '((hidden? . #t)))
     (license (list license:asl2.0
                    license:expat))))
 
-(define-public rust-fnv
+(define-public rust-fnv-1.0
   (package
     (name "rust-fnv")
     (version "1.0.6")
@@ -897,7 +796,7 @@ cross platform API.")
       (origin
         (method url-fetch)
         (uri (crate-uri "fnv" version))
-        (file-name (string-append name "-" version ".tar.gz"))
+        (file-name (string-append name "-" version ".crate"))
         (sha256
          (base32
           "1ww56bi1r5b8id3ns9j3qxbi7w5h005rzhiryy0zi9h97raqbb9g"))))
@@ -906,10 +805,11 @@ cross platform API.")
     (synopsis "implementation of the Fowler-Noll-Vo hash function")
     (description "The @code{fnv} hash function is a custom @code{Hasher}
 implementation that is more efficient for smaller hash keys.")
+    (properties '((hidden? . #t)))
     (license (list license:asl2.0
                    license:expat))))
 
-(define-public rust-foreign-types-shared
+(define-public rust-foreign-types-shared-0.2
   (package
     (name "rust-foreign-types-shared")
     (version "0.2.0")
@@ -917,7 +817,7 @@ implementation that is more efficient for smaller hash keys.")
       (origin
         (method url-fetch)
         (uri (crate-uri "foreign-types-shared" version))
-        (file-name (string-append name "-" version ".tar.gz"))
+        (file-name (string-append name "-" version ".crate"))
         (sha256
          (base32
           "0kanxlif1vp0ffh2r9l610jqbkmb3183yqykxq1z5w1vay2rn7y6"))))
@@ -926,10 +826,11 @@ implementation that is more efficient for smaller hash keys.")
     (synopsis "An internal crate used by foreign-types")
     (description
      "An internal crate used by foreign-types.")
+    (properties '((hidden? . #t)))
     (license (list license:asl2.0
                    license:expat))))
 
-(define-public rust-fs-extra
+(define-public rust-fs-extra-1.1
   (package
     (name "rust-fs-extra")
     (version "1.1.0")
@@ -937,7 +838,7 @@ implementation that is more efficient for smaller hash keys.")
       (origin
         (method url-fetch)
         (uri (crate-uri "fs_extra" version))
-        (file-name (string-append name "-" version ".tar.gz"))
+        (file-name (string-append name "-" version ".crate"))
         (sha256
          (base32
           "0x6675wdhsx277k1k1235jwcv38naf20d8kwrk948ds26hh4lajz"))))
@@ -947,9 +848,10 @@ implementation that is more efficient for smaller hash keys.")
     (description "Expanding opportunities standard library @code{std::fs} and
 @code{std::io}.  Recursively copy folders with recept information about
 process and much more.")
+    (properties '((hidden? . #t)))
     (license license:expat)))
 
-(define-public rust-fuchsia-cprng
+(define-public rust-fuchsia-cprng-0.1
   (package
     (name "rust-fuchsia-cprng")
     (version "0.1.1")
@@ -957,20 +859,19 @@ process and much more.")
       (origin
         (method url-fetch)
         (uri (crate-uri "fuchsia-cprng" version))
-        (file-name (string-append name "-" version ".tar.gz"))
+        (file-name (string-append name "-" version ".crate"))
         (sha256
          (base32
           "1fnkqrbz7ixxzsb04bsz9p0zzazanma8znfdqjvh39n14vapfvx0"))))
     (build-system cargo-build-system)
-    (arguments
-     `(#:tests? #f)) ; tests require zircon
     (home-page "https://fuchsia.googlesource.com/fuchsia/+/master/garnet/public/rust/fuchsia-cprng")
     (synopsis "Fuchsia cryptographically secure pseudorandom number generator")
     (description "Rust crate for the Fuchsia cryptographically secure
 pseudorandom number generator")
+    (properties '((hidden? . #t)))
     (license license:bsd-3)))
 
-(define-public rust-fuchsia-zircon
+(define-public rust-fuchsia-zircon-0.3
   (package
     (name "rust-fuchsia-zircon")
     (version "0.3.3")
@@ -978,22 +879,18 @@ pseudorandom number generator")
       (origin
         (method url-fetch)
         (uri (crate-uri "fuchsia-zircon" version))
-        (file-name (string-append name "-" version ".tar.gz"))
+        (file-name (string-append name "-" version ".crate"))
         (sha256
          (base32
           "10jxc5ks1x06gpd0xg51kcjrxr35nj6qhx2zlc5n7bmskv3675rf"))))
     (build-system cargo-build-system)
-    (arguments
-     `(#:cargo-inputs
-       (("rust-bitflags" ,rust-bitflags)
-        ("rust-fuchsia-zircon-sys" ,rust-fuchsia-zircon-sys))
-       #:tests? #f)) ; tests require zircon
     (home-page "https://fuchsia.googlesource.com/garnet/")
     (synopsis "Rust bindings for the Zircon kernel")
     (description "Rust bindings for the Zircon kernel.")
+    (properties '((hidden? . #t)))
     (license license:bsd-3)))
 
-(define-public rust-fuchsia-zircon-sys
+(define-public rust-fuchsia-zircon-sys-0.3
   (package
     (name "rust-fuchsia-zircon-sys")
     (version "0.3.3")
@@ -1001,19 +898,18 @@ pseudorandom number generator")
       (origin
         (method url-fetch)
         (uri (crate-uri "fuchsia-zircon-sys" version))
-        (file-name (string-append name "-" version ".tar.gz"))
+        (file-name (string-append name "-" version ".crate"))
         (sha256
          (base32
           "19zp2085qsyq2bh1gvcxq1lb8w6v6jj9kbdkhpdjrl95fypakjix"))))
     (build-system cargo-build-system)
-    (arguments
-     `(#:tests? #f)) ; tests require zircon
     (home-page "https://fuchsia.googlesource.com/garnet/")
     (synopsis "Low-level Rust bindings for the Zircon kernel")
     (description "Low-level Rust bindings for the Zircon kernel.")
+    (properties '((hidden? . #t)))
     (license license:bsd-3)))
 
-(define-public rust-futures
+(define-public rust-futures-0.1
   (package
     (name "rust-futures")
     (version "0.1.28")
@@ -1021,7 +917,7 @@ pseudorandom number generator")
       (origin
         (method url-fetch)
         (uri (crate-uri "futures" version))
-        (file-name (string-append name "-" version ".tar.gz"))
+        (file-name (string-append name "-" version ".crate"))
         (sha256
          (base32
           "0saq8ffjw1pwf1pzhw3kq1z7dfq6wpd8x93dnni6vbkc799kkp25"))))
@@ -1030,10 +926,11 @@ pseudorandom number generator")
     (synopsis "Implementation of zero-cost futures in Rust")
     (description "An implementation of @code{futures} and @code{streams}
 featuring zero allocations, composability, and iterator-like interfaces.")
+    (properties '((hidden? . #t)))
     (license (list license:asl2.0
                    license:expat))))
 
-(define-public rust-futures-core-preview
+(define-public rust-futures-core-preview-0.3
   (package
     (name "rust-futures-core-preview")
     (version "0.3.0-alpha.17")
@@ -1041,21 +938,20 @@ featuring zero allocations, composability, and iterator-like interfaces.")
       (origin
         (method url-fetch)
         (uri (crate-uri "futures-core-preview" version))
-        (file-name (string-append name "-" version ".tar.gz"))
+        (file-name (string-append name "-" version ".crate"))
         (sha256
          (base32
           "1xaq8m609k6cz8xydwhwp8xxyxigabcw1w9ngycfy0bnkg7iq52b"))))
     (build-system cargo-build-system)
-    (arguments
-     '(#:tests? #f)) ; The only tests are doc tests, which fail.
     (home-page "https://rust-lang-nursery.github.io/futures-rs/")
     (synopsis "Core traits and types in for the @code{futures} library.")
     (description "This crate provides the core traits and types in for the
 @code{futures} library.")
+    (properties '((hidden? . #t)))
     (license (list license:asl2.0
                    license:expat))))
 
-(define-public rust-futures-cpupool
+(define-public rust-futures-cpupool-0.1
   (package
     (name "rust-futures-cpupool")
     (version "0.1.8")
@@ -1063,24 +959,21 @@ featuring zero allocations, composability, and iterator-like interfaces.")
       (origin
         (method url-fetch)
         (uri (crate-uri "futures-cpupool" version))
-        (file-name (string-append name "-" version ".tar.gz"))
+        (file-name (string-append name "-" version ".crate"))
         (sha256
          (base32
           "1r32456gpblzfvnkf60545v8acqk7gh5zhyhi1jn669k9gicv45b"))))
     (build-system cargo-build-system)
-    (arguments
-     `(#:cargo-inputs
-       (("rust-futures" ,rust-futures)
-        ("rust-num-cpus" ,rust-num-cpus))))
     (home-page "https://github.com/rust-lang-nursery/futures-rs")
     (synopsis "Implementation of thread pools which hand out futures")
     (description
      "An implementation of thread pools which hand out futures to the results of
 the computation on the threads themselves.")
+    (properties '((hidden? . #t)))
     (license (list license:asl2.0
                    license:expat))))
 
-(define-public rust-futures-io-preview
+(define-public rust-futures-io-preview-0.3
   (package
     (name "rust-futures-io-preview")
     (version "0.3.0-alpha.17")
@@ -1088,7 +981,7 @@ the computation on the threads themselves.")
       (origin
         (method url-fetch)
         (uri (crate-uri "futures-io-preview" version))
-        (file-name (string-append name "-" version ".tar.gz"))
+        (file-name (string-append name "-" version ".crate"))
         (sha256
          (base32
           "0fhvwhdb8ywjjbfng0ra1r8yyc9yzpyxg9sv3spb3f7w0lk40bh8"))))
@@ -1097,10 +990,11 @@ the computation on the threads themselves.")
     (synopsis "Async read and write traits for the futures library")
     (description "This crate provides the @code{AsyncRead} and
 @code{AsyncWrite} traits for the @code{futures-rs} library.")
+    (properties '((hidden? . #t)))
     (license (list license:asl2.0
                    license:expat))))
 
-(define-public rust-futures-sink-preview
+(define-public rust-futures-sink-preview-0.3
   (package
     (name "rust-futures-sink-preview")
     (version "0.3.0-alpha.17")
@@ -1108,63 +1002,45 @@ the computation on the threads themselves.")
       (origin
         (method url-fetch)
         (uri (crate-uri "futures-sink-preview" version))
-        (file-name (string-append name "-" version ".tar.gz"))
+        (file-name (string-append name "-" version ".crate"))
         (sha256
          (base32
           "1r4d0gy73hdxkh5g1lrhl1kjnwp6mywjgcj70v0z78b921da42a3"))))
     (build-system cargo-build-system)
-    (arguments
-     `(#:cargo-inputs
-       (("rust-futures-core-preview" ,rust-futures-core-preview))))
     (home-page "https://rust-lang-nursery.github.io/futures-rs/")
     (synopsis  "Asynchronous `Sink` trait for the futures-rs library")
     (description
      "This package provides the asynchronous @code{Sink} trait for the
 futures-rs library.")
+    (properties '((hidden? . #t)))
     (license (list license:asl2.0
                    license:expat))))
 
-(define-public rust-gcc
+(define-public rust-gcc-0.3
   (package
-    (inherit rust-cc)
+    (inherit rust-cc-1.0)
     (name "rust-gcc")
     (version "0.3.55")
     (source
       (origin
         (method url-fetch)
         (uri (crate-uri "gcc" version))
-        (file-name (string-append name "-" version ".tar.gz"))
+        (file-name (string-append name "-" version ".crate"))
         (sha256
          (base32
           "1hng1sajn4r67hndvhjysswz8niayjwvcj42zphpxzhbz89kjpwg"))))
     (build-system cargo-build-system)
-    (arguments
-     `(;#:cargo-inputs
-       ;(("rust-rayon" ,rust-rayon))
-       #:cargo-development-inputs
-       (("rust-tempdir" ,rust-tempdir))
-       #:phases
-       (modify-phases %standard-phases
-         (add-after 'unpack 'remove-optional-deps
-           (lambda _
-             (substitute* "Cargo.toml.orig"
-               ((".*optional.*") "\n")
-               ((".*features.*") "")
-               ((".*parallel.*") ""))
-             (delete-file "Cargo.toml")
-             (copy-file "Cargo.toml.orig" "Cargo.toml")
-             #t)))
-       #:tests? #f))
     (home-page "https://github.com/alexcrichton/cc-rs")
     (synopsis "Library to compile C/C++ code into a Rust library/application")
     (description
      "This package provides a build-time dependency for Cargo build scripts to
 assist in invoking the native C compiler to compile native C code into a static
 archive to be linked into Rustcode.")
+    (properties '((hidden? . #t)))
     (license (list license:asl2.0
                    license:expat))))
 
-(define-public rust-getopts
+(define-public rust-getopts-0.2
   (package
     (name "rust-getopts")
     (version "0.2.17")
@@ -1172,21 +1048,19 @@ archive to be linked into Rustcode.")
       (origin
         (method url-fetch)
         (uri (crate-uri "getopts" version))
-        (file-name (string-append name "-" version ".tar.gz"))
+        (file-name (string-append name "-" version ".crate"))
         (sha256
          (base32
           "018yhq97zgcrcxwhj3pxh31h83704sgaiijdnpl0r1ir366c005r"))))
     (build-system cargo-build-system)
-    (arguments
-     `(#:cargo-development-inputs
-       (("rust-log" ,rust-log))))
     (home-page "https://github.com/rust-lang-nursery/getopts")
     (synopsis "Rust library for option parsing for CLI utilities")
     (description "This library provides getopts-like option parsing.")
+    (properties '((hidden? . #t)))
     (license (list license:asl2.0
                    license:expat))))
 
-(define-public rust-glob
+(define-public rust-glob-0.3
   (package
     (name "rust-glob")
     (version "0.3.0")
@@ -1194,56 +1068,35 @@ archive to be linked into Rustcode.")
       (origin
         (method url-fetch)
         (uri (crate-uri "glob" version))
-        (file-name (string-append name "-" version ".tar.gz"))
+        (file-name (string-append name "-" version ".crate"))
         (sha256
          (base32
           "0x25wfr7vg3mzxc9x05dcphvd3nwlcmbnxrvwcvrrdwplcrrk4cv"))))
     (build-system cargo-build-system)
-    (arguments
-     `(#:cargo-development-inputs
-       (("rust-tempdir" ,rust-tempdir))
-       #:phases
-       (modify-phases %standard-phases
-         (add-after 'unpack 'fix-tests
-           ;; This test assumes /root exists but is unreadable by the user.
-           (lambda _
-             (substitute* "src/lib.rs"
-               (("cfg\\(all\\(unix,.*") "cfg(windows)]\n"))
-             #t)))))
     (home-page "https://github.com/rust-lang-nursery/glob")
     (synopsis "Match file paths against Unix shell style patterns")
     (description
      "This package provides support for matching file paths against Unix
 shell style patterns.")
+    (properties '((hidden? . #t)))
     (license (list license:asl2.0
                    license:expat))))
 
 (define-public rust-glob-0.2
   (package
-    (inherit rust-glob)
+    (inherit rust-glob-0.3)
     (name "rust-glob")
     (version "0.2.11")
     (source
       (origin
         (method url-fetch)
         (uri (crate-uri "glob" version))
-        (file-name (string-append name "-" version ".tar.gz"))
+        (file-name (string-append name "-" version ".crate"))
         (sha256
          (base32
-          "1ysvi72slkw784fcsymgj4308c3y03gwjjzqxp80xdjnkbh8vqcb"))))
-    (arguments
-     `(#:cargo-development-inputs
-       (("rust-tempdir" ,rust-tempdir))
-       #:phases
-       (modify-phases %standard-phases
-         (add-after 'unpack 'fix-tests
-           ;; This test assumes /root exists but is unreadable by the user.
-           (lambda _
-             (substitute* "src/lib.rs"
-               (("cfg\\(unix") "cfg(windows"))
-             #t)))))))
+          "1ysvi72slkw784fcsymgj4308c3y03gwjjzqxp80xdjnkbh8vqcb"))))))
 
-(define-public rust-heapsize
+(define-public rust-heapsize-0.4
   (package
     (name "rust-heapsize")
     (version "0.4.2")
@@ -1251,43 +1104,36 @@ shell style patterns.")
       (origin
         (method url-fetch)
         (uri (crate-uri "heapsize" version))
-        (file-name (string-append name "-" version ".tar.gz"))
+        (file-name (string-append name "-" version ".crate"))
         (sha256
          (base32
           "0q94q9ppqjgrw71swiyia4hgby2cz6dldp7ij57nkvhd6zmfcy8n"))))
     (build-system cargo-build-system)
-    (arguments
-     `(#:cargo-inputs (("rust-winapi" ,rust-winapi))
-       ;; Tests assume rust is built with jemalloc.
-       ;; https://github.com/servo/heapsize/issues/74
-       #:cargo-test-flags '("--features" "flexible-tests")))
     (home-page "https://github.com/servo/heapsize")
     (synopsis "Measure the total runtime size of an object on the heap")
     (description
      "Infrastructure for measuring the total runtime size of an object on the
 heap.")
+    (properties '((hidden? . #t)))
     (license (list license:asl2.0
                    license:expat))))
 
 (define-public rust-heapsize-0.3
   (package
-    (inherit rust-heapsize)
+    (inherit rust-heapsize-0.4)
     (name "rust-heapsize")
     (version "0.3.9")
     (source
       (origin
         (method url-fetch)
         (uri (crate-uri "heapsize" version))
-        (file-name (string-append name "-" version ".tar.gz"))
+        (file-name (string-append name "-" version ".crate"))
         (sha256
          (base32
-          "0dmwc37vgsdjzk10443dj4f23439i9gch28jcwzmry3chrwx8v2m"))))
-    (arguments
-     `(#:cargo-inputs (("rust-kernel32-sys" ,rust-kernel32-sys))
-       #:tests? #f)))) ;; No flexible-tests feature flags on this release.
+          "0dmwc37vgsdjzk10443dj4f23439i9gch28jcwzmry3chrwx8v2m"))))))
 
 ;; This package makes use of removed features
-(define-public rust-heapsize-plugin
+(define-public rust-heapsize-plugin-0.1
   (package
     (name "rust-heapsize-plugin")
     (version "0.1.6")
@@ -1295,20 +1141,11 @@ heap.")
       (origin
         (method url-fetch)
         (uri (crate-uri "heapsize_plugin" version))
-        (file-name (string-append name "-" version ".tar.gz"))
+        (file-name (string-append name "-" version ".crate"))
         (sha256
          (base32
           "1i72isf699q9jl167g2kg4xd6h3cd05rc79zaph58aqjy0g0m9y9"))))
     (build-system cargo-build-system)
-    (arguments
-     `(#:cargo-development-inputs (("rust-heapsize" ,rust-heapsize-0.3))
-       #:phases
-       (modify-phases %standard-phases
-         (add-after 'unpack 'fix-Cargo-toml
-           (lambda _
-             (substitute* "Cargo.toml"
-               (("path = \"..\", ") ""))
-             #t)))))
     (home-page "https://github.com/servo/heapsize")
     (synopsis "Measure runtime size of an object on the heap")
     (description
@@ -1317,7 +1154,7 @@ total runtime size of an object on the heap")
     (properties `((hidden? . #t)))
     (license license:mpl2.0)))
 
-(define-public rust-hex
+(define-public rust-hex-0.3
   (package
     (name "rust-hex")
     (version "0.3.2")
@@ -1325,7 +1162,7 @@ total runtime size of an object on the heap")
       (origin
         (method url-fetch)
         (uri (crate-uri "hex" version))
-        (file-name (string-append name "-" version ".tar.gz"))
+        (file-name (string-append name "-" version ".crate"))
         (sha256
          (base32
           "0xsdcjiik5j750j67zk42qdnmm4ahirk3gmkmcqgq7qls2jjcl40"))))
@@ -1334,10 +1171,11 @@ total runtime size of an object on the heap")
     (synopsis "Encode and decode data to/from hexadecimals")
     (description "This crate allows for encoding and decoding data into/from
 hexadecimal representation.")
+    (properties '((hidden? . #t)))
     (license (list license:asl2.0
                    license:expat))))
 
-(define-public rust-hostname
+(define-public rust-hostname-0.1
   (package
     (name "rust-hostname")
     (version "0.1.5")
@@ -1345,22 +1183,19 @@ hexadecimal representation.")
       (origin
         (method url-fetch)
         (uri (crate-uri "hostname" version))
-        (file-name (string-append name "-" version ".tar.gz"))
+        (file-name (string-append name "-" version ".crate"))
         (sha256
          (base32
           "0kprf862qaa7lwdms6aw7f3275h0j2rwhs9nz5784pm8hdmb9ki1"))))
     (build-system cargo-build-system)
-    (arguments
-     `(#:cargo-inputs
-       (("rust-libc" ,rust-libc)
-        ("rust-winutil" ,rust-winutil))))
     (home-page "https://github.com/fengcen/hostname")
     (synopsis "Get hostname for Rust")
     (description
      "Get hostname for Rust.")
+    (properties '((hidden? . #t)))
     (license license:expat)))
 
-(define-public rust-iovec
+(define-public rust-iovec-0.1
   (package
     (name "rust-iovec")
     (version "0.1.2")
@@ -1368,23 +1203,20 @@ hexadecimal representation.")
       (origin
         (method url-fetch)
         (uri (crate-uri "iovec" version))
-        (file-name (string-append name "-" version ".tar.gz"))
+        (file-name (string-append name "-" version ".crate"))
         (sha256
          (base32
           "025vi072m22299z3fg73qid188z2iip7k41ba6v5v5yhwwby9rnv"))))
     (build-system cargo-build-system)
-    (arguments
-     `(#:cargo-inputs
-       (("rust-libc" ,rust-libc)
-        ("rust-winapi" ,rust-winapi-0.2))))
     (home-page "https://github.com/carllerche/iovec")
     (synopsis "Portable buffer type for scatter/gather I/O operations")
     (description
      "Portable buffer type for scatter/gather I/O operations.")
+    (properties '((hidden? . #t)))
     (license (list license:asl2.0
                    license:expat))))
 
-(define-public rust-itoa
+(define-public rust-itoa-0.4
   (package
     (name "rust-itoa")
     (version "0.4.4")
@@ -1392,7 +1224,7 @@ hexadecimal representation.")
       (origin
         (method url-fetch)
         (uri (crate-uri "itoa" version))
-        (file-name (string-append name "-" version ".tar.gz"))
+        (file-name (string-append name "-" version ".crate"))
         (sha256
          (base32
           "0zvg2d9qv3avhf3d8ggglh6fdyw8kkwqg3r4622ly5yhxnvnc4jh"))))
@@ -1401,24 +1233,25 @@ hexadecimal representation.")
     (synopsis "Fast functions for printing integer primitives")
     (description "This crate provides fast functions for printing integer
 primitives to an @code{io::Write}.")
+    (properties '((hidden? . #t)))
     (license (list license:asl2.0
                    license:expat))))
 
 (define-public rust-itoa-0.1
  (package
-   (inherit rust-itoa)
+   (inherit rust-itoa-0.4)
    (name "rust-itoa")
    (version "0.1.1")
    (source
      (origin
        (method url-fetch)
        (uri (crate-uri "itoa" version))
-       (file-name (string-append name "-" version ".tar.gz"))
+       (file-name (string-append name "-" version ".crate"))
        (sha256
         (base32
          "18g7p2hrb3dk84z3frfgmszfc9hjb4ps9vp99qlb1kmf9gm8hc5f"))))))
 
-(define-public rust-jemalloc-sys
+(define-public rust-jemalloc-sys-0.3
   (package
     (name "rust-jemalloc-sys")
     (version "0.3.2")
@@ -1426,34 +1259,31 @@ primitives to an @code{io::Write}.")
       (origin
         (method url-fetch)
         (uri (crate-uri "jemalloc-sys" version))
-        (file-name (string-append name "-" version ".tar.gz"))
+        (file-name (string-append name "-" version ".crate"))
         (sha256
          (base32
           "0ify9vlql01qhfxlj7d4p9jvcp90mj2h69nkbq7slccvbhzryfqd"))))
     (build-system cargo-build-system)
-    (arguments
-     `(#:cargo-inputs
-       (("rust-libc" ,rust-libc)
-        ("rust-cc" ,rust-cc)
-        ("rust-fs-extra" ,rust-fs-extra))
-       #:phases
-       (modify-phases %standard-phases
-         (add-after 'unpack 'override-jemalloc
-           (lambda* (#:key inputs #:allow-other-keys)
-             (let ((jemalloc (assoc-ref inputs "jemalloc")))
-               (delete-file-recursively "jemalloc")
-               (setenv "JEMALLOC_OVERRIDE"
-                       (string-append jemalloc "/lib/libjemalloc_pic.a")))
-             #t)))))
-    (inputs
-     `(("jemalloc" ,jemalloc)))
+    ;(arguments
+    ; `(#:phases
+    ;   (modify-phases %standard-phases
+    ;     (add-after 'unpack 'override-jemalloc
+    ;       (lambda* (#:key inputs #:allow-other-keys)
+    ;         (let ((jemalloc (assoc-ref inputs "jemalloc")))
+    ;           (delete-file-recursively "jemalloc")
+    ;           (setenv "JEMALLOC_OVERRIDE"
+    ;                   (string-append jemalloc "/lib/libjemalloc_pic.a")))
+    ;         #t)))))
+    ;(inputs
+    ; `(("jemalloc" ,jemalloc)))
     (home-page "https://github.com/gnzlbg/jemallocator")
     (synopsis "Rust FFI bindings to jemalloc")
     (description "This package provides Rust FFI bindings to jemalloc.")
+    (properties '((hidden? . #t)))
     (license (list license:asl2.0
                    license:expat))))
 
-(define-public rust-json
+(define-public rust-json-0.11
   (package
     (name "rust-json")
     (version "0.11.14")
@@ -1461,7 +1291,7 @@ primitives to an @code{io::Write}.")
       (origin
         (method url-fetch)
         (uri (crate-uri "json" version))
-        (file-name (string-append name "-" version ".tar.gz"))
+        (file-name (string-append name "-" version ".crate"))
         (sha256
          (base32
           "1hj8c6xj5c2aqqszi8naaflmcdbya1i9byyjrq4iybxjb4q91mq1"))))
@@ -1470,10 +1300,11 @@ primitives to an @code{io::Write}.")
     (synopsis "JSON implementation in Rust")
     (description "This crate provides a JSON implementation in Rust, reducing
 friction with idiomatic Rust structs to ease interopability.")
+    (properties '((hidden? . #t)))
     (license (list license:asl2.0
                    license:expat))))
 
-(define-public rust-kernel32-sys
+(define-public rust-kernel32-sys-0.2
   (package
     (name "rust-kernel32-sys")
     (version "0.2.2")
@@ -1481,29 +1312,19 @@ friction with idiomatic Rust structs to ease interopability.")
       (origin
         (method url-fetch)
         (uri (crate-uri "kernel32-sys" version))
-        (file-name (string-append name "-" version ".tar.gz"))
+        (file-name (string-append name "-" version ".crate"))
         (sha256
          (base32
           "1389av0601a9yz8dvx5zha9vmkd6ik7ax0idpb032d28555n41vm"))))
     (build-system cargo-build-system)
-    (arguments
-     `(#:cargo-inputs
-       (("rust-winapi" ,rust-winapi-0.2)
-        ("rust-winapi-build" ,rust-winapi-build))
-       #:phases
-       (modify-phases %standard-phases
-         (add-after 'unpack 'fix-Cargo-toml
-           (lambda _
-             (substitute* "Cargo.toml"
-               ((", path =.* }") "}\n"))
-             #t)))))
     (home-page "https://github.com/retep998/winapi-rs")
     (synopsis "Function definitions for the Windows API library kernel32")
     (description "Contains function definitions for the Windows API library
 kernel32.")
+    (properties '((hidden? . #t)))
     (license license:expat)))
 
-(define-public rust-language-tags
+(define-public rust-language-tags-0.2
   (package
     (name "rust-language-tags")
     (version "0.2.2")
@@ -1511,16 +1332,11 @@ kernel32.")
       (origin
         (method url-fetch)
         (uri (crate-uri "language-tags" version))
-        (file-name (string-append name "-" version ".tar.gz"))
+        (file-name (string-append name "-" version ".crate"))
         (sha256
          (base32
           "16hrjdpa827carq5x4b8zhas24d8kg4s16m6nmmn1kb7cr5qh7d9"))))
     (build-system cargo-build-system)
-    (arguments
-     `(#:cargo-inputs
-       (("rust-heapsize" ,rust-heapsize-0.3))
-       #:cargo-development-inputs
-       (("rust-heapsize-plugin" ,rust-heapsize-plugin))))
     (home-page "https://github.com/pyfisch/rust-language-tags")
     (synopsis "Language tags for Rust")
     (description
@@ -1529,9 +1345,10 @@ script, countries and other regions.  They are commonly used in HTML and HTTP
 @code{Content-Language} and @code{Accept-Language} header fields.  This package
 currently supports parsing (fully conformant parser), formatting and comparing
 language tags.")
+    (properties '((hidden? . #t)))
     (license license:expat)))
 
-(define-public rust-lazy-static
+(define-public rust-lazy-static-1.3
   (package
     (name "rust-lazy-static")
     (version "1.3.0")
@@ -1539,13 +1356,11 @@ language tags.")
       (origin
         (method url-fetch)
         (uri (crate-uri "lazy_static" version))
-        (file-name (string-append name "-" version ".tar.gz"))
+        (file-name (string-append name "-" version ".crate"))
         (sha256
          (base32
           "052ac27w189hrf1j3hz7sga46rp84zl2hqnzyihxv78mgzr2jmxw"))))
     (build-system cargo-build-system)
-    (arguments
-     `(#:cargo-inputs (("rust-spin" ,rust-spin))))
     (home-page  "https://github.com/rust-lang-nursery/lazy-static.rs")
     (synopsis "Macro for declaring lazily evaluated statics in Rust")
     (description
@@ -1554,10 +1369,11 @@ Rust.  Using this macro, it is possible to have @code{static}s that require code
 to be executed at runtime in order to be initialized.  This includes anything
 requiring heap allocations, like vectors or hash maps, as well as anything that
 requires non-const function calls to be computed.")
+    (properties '((hidden? . #t)))
     (license (list license:asl2.0
                    license:expat))))
 
-(define-public rust-libc
+(define-public rust-libc-0.2
   (package
     (name "rust-libc")
     (version "0.2.62")
@@ -1566,14 +1382,11 @@ requires non-const function calls to be computed.")
        (method url-fetch)
        (uri (crate-uri "libc" version))
        (file-name
-        (string-append name "-" version ".tar.gz"))
+        (string-append name "-" version ".crate"))
        (sha256
         (base32
          "1fh69kpjg8hqff36kdczx7sax98gk4qs4ws1dwvjz0rgip0d5z1l"))))
     (build-system cargo-build-system)
-    (arguments
-     `(#:cargo-inputs
-       (("rust-rustc-std-workspace-core" ,rust-rustc-std-workspace-core))))
     (home-page "https://github.com/rust-lang/libc")
     (synopsis "Raw FFI bindings to platform libraries like libc")
     (description
@@ -1586,10 +1399,11 @@ This crate exports all underlying platform types, functions, and
 constants under the crate root, so all items are accessible as
 @samp{libc::foo}.  The types and values of all the exported APIs match
 the platform that libc is compiled for.")
+    (properties '((hidden? . #t)))
     (license (list license:expat
                    license:asl2.0))))
 
-(define-public rust-libgit2-sys
+(define-public rust-libgit2-sys-0.8
   (package
     (name "rust-libgit2-sys")
     (version "0.8.2")
@@ -1597,72 +1411,52 @@ the platform that libc is compiled for.")
       (origin
         (method url-fetch)
         (uri (crate-uri "libgit2-sys" version))
-        (file-name (string-append name "-" version ".tar.gz"))
+        (file-name (string-append name "-" version ".crate"))
         (sha256
          (base32
           "0y2mibmx7wy91s2kmb2gfb29mrqlqaxpy5wcwr8s1lwws7b9w5sc")) ))
     (build-system cargo-build-system)
-    (arguments
-     `(#:cargo-inputs
-       (("rust-libc" ,rust-libc)
-        ("rust-libssh2-sys" ,rust-libssh2-sys)
-        ("rust-libz-sys" ,rust-libz-sys)
-        ("rust-openssl-sys" ,rust-openssl-sys))
-       #:cargo-development-inputs
-       (("rust-cc" ,rust-cc)
-        ("rust-pkg-config" ,rust-pkg-config))
-      #:phases
-      (modify-phases %standard-phases
-        (add-after 'unpack 'find-openssl
-          (lambda* (#:key inputs #:allow-other-keys)
-            (let ((openssl (assoc-ref inputs "openssl")))
-              (setenv "OPENSSL_DIR" openssl))
-            (delete-file-recursively "libgit2")
-            (setenv "LIBGIT2_SYS_USE_PKG_CONFIG" "1")
-            (setenv "LIBSSH2_SYS_USE_PKG_CONFIG" "1")
-            #t)))))
-    (native-inputs
-     `(("pkg-config" ,pkg-config)))
-    (inputs
-     `(("libgit2" ,libgit2)
-       ("openssl" ,openssl)
-       ("zlib" ,zlib)))
+    ;(arguments
+    ; `(#:phases
+    ;  (modify-phases %standard-phases
+    ;    (add-after 'unpack 'find-openssl
+    ;      (lambda* (#:key inputs #:allow-other-keys)
+    ;        (let ((openssl (assoc-ref inputs "openssl")))
+    ;          (setenv "OPENSSL_DIR" openssl))
+    ;        (delete-file-recursively "libgit2")
+    ;        (setenv "LIBGIT2_SYS_USE_PKG_CONFIG" "1")
+    ;        (setenv "LIBSSH2_SYS_USE_PKG_CONFIG" "1")
+    ;        #t)))))
+    ;(native-inputs
+    ; `(("pkg-config" ,pkg-config)))
+    ;(inputs
+    ; `(("libgit2" ,libgit2)
+    ;   ("openssl" ,openssl)
+    ;   ("zlib" ,zlib)))
     (home-page "https://github.com/rust-lang/git2-rs")
     (synopsis "Native bindings to the libgit2 library")
     (description
      "This package provides native rust bindings to the @code{libgit2} library.")
+    (properties '((hidden? . #t)))
     (license (list license:asl2.0
                    license:expat))))
 
 (define-public rust-libgit2-sys-0.7
   (package
-    (inherit rust-libgit2-sys)
+    (inherit rust-libgit2-sys-0.8)
     (name "rust-libgit2-sys")
     (version "0.7.11")
     (source
       (origin
         (method url-fetch)
         (uri (crate-uri "libgit2-sys" version))
-        (file-name (string-append name "-" version ".tar.gz"))
+        (file-name (string-append name "-" version ".crate"))
         (sha256
          (base32
           "1wcvg2qqra2aviasvqcscl8gb2rnjnd6h998wy5dlmf2bnriqi28"))))
-    (build-system cargo-build-system)
-    (arguments
-     `(#:cargo-inputs
-       (("rust-curl-sys" ,rust-curl-sys)
-        ("rust-libc" ,rust-libc)
-        ("rust-libssh2-sys" ,rust-libssh2-sys)
-        ("rust-libz-sys" ,rust-libz-sys)
-        ("rust-openssl-sys" ,rust-openssl-sys))
-       #:cargo-development-inputs
-       (("rust-cc" ,rust-cc)
-        ("rust-pkg-config" ,rust-pkg-config))))
-   (inputs
-    `(("curl" ,curl)
-      ,@(package-inputs rust-libgit2-sys)))))
-
-(define-public rust-libloading
+    (build-system cargo-build-system)))
+
+(define-public rust-libloading-0.5
   (package
     (name "rust-libloading")
     (version "0.5.2")
@@ -1670,15 +1464,11 @@ the platform that libc is compiled for.")
       (origin
         (method url-fetch)
         (uri (crate-uri "libloading" version))
-        (file-name (string-append name "-" version ".tar.gz"))
+        (file-name (string-append name "-" version ".crate"))
         (sha256
          (base32
           "0lyply8rcqc8agajzxs7bq6ivba9dnn1i68kgb9z2flnfjh13cgj"))))
     (build-system cargo-build-system)
-    (arguments
-     `(#:cargo-inputs
-       (("rust-cc" ,rust-cc)
-        ("rust-winapi" ,rust-winapi))))
     (home-page "https://github.com/nagisa/rust_libloading/")
     (synopsis "Rust library for loading dynamic libraries")
     (description
@@ -1687,9 +1477,10 @@ The most important safety guarantee by this library is prevention of
 dangling-Symbols that may occur after a Library is unloaded.  Using this library
 allows loading dynamic libraries (also known as shared libraries) as well as use
 functions and static variables these libraries contain.")
+    (properties '((hidden? . #t)))
     (license license:isc)))
 
-(define-public rust-libssh2-sys
+(define-public rust-libssh2-sys-0.2
   (package
     (name "rust-libssh2-sys")
     (version "0.2.12")
@@ -1697,45 +1488,37 @@ functions and static variables these libraries contain.")
       (origin
         (method url-fetch)
         (uri (crate-uri "libssh2-sys" version))
-        (file-name (string-append name "-" version ".tar.gz"))
+        (file-name (string-append name "-" version ".crate"))
         (sha256
          (base32
           "1zb6gsw795nq848nk5x2smzpfnn1s15wjlzjnvr8ihlz2l5x2549"))))
     (build-system cargo-build-system)
-    (arguments
-     `(#:cargo-inputs
-       (("rust-libc" ,rust-libc)
-        ("rust-libz-sys" ,rust-libz-sys)
-        ("rust-openssl-sys" ,rust-openssl-sys))
-       #:cargo-development-inputs
-       (("rust-cc" ,rust-cc)
-        ("rust-openssl-src" ,rust-openssl-src)
-        ("rust-pkg-config" ,rust-pkg-config)
-        ("rust-vcpkg" ,rust-vcpkg))
-      #:phases
-      (modify-phases %standard-phases
-        (add-after 'unpack 'find-openssl
-          (lambda* (#:key inputs #:allow-other-keys)
-            (let ((openssl (assoc-ref inputs "openssl")))
-              (setenv "OPENSSL_DIR" openssl))
-            (delete-file-recursively "libssh2")
-            (setenv "LIBSSH2_SYS_USE_PKG_CONFIG" "1")
-            #t)))))
-    (native-inputs
-     `(("pkg-config" ,pkg-config)))
-    (inputs
-     `(("libssh2" ,libssh2)
-       ("openssl" ,openssl)
-       ("zlib" ,zlib)))
+    ;(arguments
+    ; `(#:phases
+    ;  (modify-phases %standard-phases
+    ;    (add-after 'unpack 'find-openssl
+    ;      (lambda* (#:key inputs #:allow-other-keys)
+    ;        (let ((openssl (assoc-ref inputs "openssl")))
+    ;          (setenv "OPENSSL_DIR" openssl))
+    ;        (delete-file-recursively "libssh2")
+    ;        (setenv "LIBSSH2_SYS_USE_PKG_CONFIG" "1")
+    ;        #t)))))
+    ;(native-inputs
+    ; `(("pkg-config" ,pkg-config)))
+    ;(inputs
+    ; `(("libssh2" ,libssh2)
+    ;   ("openssl" ,openssl)
+    ;   ("zlib" ,zlib)))
     (home-page "https://github.com/alexcrichton/ssh2-rs")
     (synopsis "Native bindings to the libssh2 library")
     (description
      "This package provides native rust bindings to the @code{libssh2} library.")
+    (properties '((hidden? . #t)))
     (license (list license:asl2.0
                    license:expat))))
 
 
-(define-public rust-lock-api
+(define-public rust-lock-api-0.1
   (package
     (name "rust-lock-api")
     (version "0.1.5")
@@ -1743,24 +1526,21 @@ functions and static variables these libraries contain.")
       (origin
         (method url-fetch)
         (uri (crate-uri "lock_api" version))
-        (file-name (string-append name "-" version ".tar.gz"))
+        (file-name (string-append name "-" version ".crate"))
         (sha256
          (base32
           "0b24q9mh258xa52ap636q1sxz0j5vrnp0hwbbh7ddjka3wwz3sv2"))))
     (build-system cargo-build-system)
-    (arguments
-     `(#:cargo-inputs
-       (("rust-owning-ref" ,rust-owning-ref)
-        ("rust-scopeguard" ,rust-scopeguard-0.3))))
     (home-page "https://github.com/Amanieu/parking_lot")
     (synopsis "Wrappers to create fully-featured Mutex and RwLock types")
     (description
      "This package provides wrappers to create fully-featured @code{Mutex} and
 @code{RwLock} types.  It is compatible with @code{no_std}.")
+    (properties '((hidden? . #t)))
     (license (list license:asl2.0
                    license:expat))))
 
-(define-public rust-log
+(define-public rust-log-0.3
   (package
     (name "rust-log")
     (version "0.3.8")
@@ -1768,7 +1548,7 @@ functions and static variables these libraries contain.")
       (origin
         (method url-fetch)
         (uri (crate-uri "log" version))
-        (file-name (string-append name "-" version ".tar.gz"))
+        (file-name (string-append name "-" version ".crate"))
         (sha256
          (base32
           "0nsn28syc49vvjhxcfc8261rd1frhjc0r4bn9v3mqvps3ra7f3w8"))))
@@ -1777,10 +1557,11 @@ functions and static variables these libraries contain.")
     (synopsis "Lightweight logging")
     (description
      "This package provides a lightweight logging facade for Rust")
+    (properties '((hidden? . #t)))
     (license (list license:asl2.0
                    license:expat))))
 
-(define-public rust-lzma-sys
+(define-public rust-lzma-sys-0.1
   (package
     (name "rust-lzma-sys")
     (version "0.1.15")
@@ -1788,35 +1569,32 @@ functions and static variables these libraries contain.")
       (origin
         (method url-fetch)
         (uri (crate-uri "lzma-sys" version))
-        (file-name (string-append name "-" version ".tar.gz"))
+        (file-name (string-append name "-" version ".crate"))
         (sha256
          (base32
           "14gyj256yh0wm77jbvmlc39v7lfn0navpfrja4alczarzlc8ir2k"))))
     (build-system cargo-build-system)
-    (arguments
-     `(#:cargo-inputs
-       (("rust-cc" ,rust-cc)
-        ("rust-libc" ,rust-libc)
-        ("rust-pkg-config" ,rust-pkg-config))
-        #:phases
-       (modify-phases %standard-phases
-         (add-after 'unpack 'unbundle-xz
-           (lambda* (#:key inputs #:allow-other-keys)
-             (let ((xz (assoc-ref inputs "xz")))
-               (delete-file-recursively "xz-5.2"))
-             #t)))))
-    (inputs
-     `(("pkg-config" ,pkg-config)
-       ("xz" ,xz)))
+    ;(arguments
+    ; `(#:phases
+    ;   (modify-phases %standard-phases
+    ;     (add-after 'unpack 'unbundle-xz
+    ;       (lambda* (#:key inputs #:allow-other-keys)
+    ;         (let ((xz (assoc-ref inputs "xz")))
+    ;           (delete-file-recursively "xz-5.2"))
+    ;         #t)))))
+    ;(inputs
+    ; `(("pkg-config" ,pkg-config)
+    ;   ("xz" ,xz)))
     (home-page "https://github.com/alexcrichton/xz2-rs")
     (synopsis "Bindings to liblzma for lzma and xz stream encoding/decoding")
     (description
      "This package contains the raw bindings to liblzma which contains an
 implementation of LZMA and xz stream encoding/decoding.")
+    (properties '((hidden? . #t)))
     (license (list license:asl2.0
                    license:expat))))
 
-(define-public rust-maplit
+(define-public rust-maplit-1.0
   (package
     (name "rust-maplit")
     (version "1.0.1")
@@ -1824,7 +1602,7 @@ implementation of LZMA and xz stream encoding/decoding.")
       (origin
         (method url-fetch)
         (uri (crate-uri "maplit" version))
-        (file-name (string-append name "-" version ".tar.gz"))
+        (file-name (string-append name "-" version ".crate"))
         (sha256
          (base32
           "0hsczmvd6zkqgzqdjp5hfyg7f339n68w83n4pxvnsszrzssbdjq8"))))
@@ -1833,10 +1611,11 @@ implementation of LZMA and xz stream encoding/decoding.")
     (synopsis "Collection of Map macros")
     (description "This crate provides a collection of @code{literal} macros for
 @code{HashMap}, @code{HashSet}, @code{BTreeMap}, and @code{BTreeSet.}")
+    (properties '((hidden? . #t)))
     (license (list license:asl2.0
                    license:expat))))
 
-(define-public rust-matches
+(define-public rust-matches-0.1
   (package
     (name "rust-matches")
     (version "0.1.8")
@@ -1844,7 +1623,7 @@ implementation of LZMA and xz stream encoding/decoding.")
       (origin
         (method url-fetch)
         (uri (crate-uri "matches" version))
-        (file-name (string-append name "-" version ".tar.gz"))
+        (file-name (string-append name "-" version ".crate"))
         (sha256
          (base32
           "020axl4q7rk9vz90phs7f8jas4imxal9y9kxl4z4v7a6719mrz3z"))))
@@ -1853,9 +1632,10 @@ implementation of LZMA and xz stream encoding/decoding.")
     (synopsis "Macro to evaluate whether an expression matches a pattern.")
     (description "This package provides a macro to evaluate, as a boolean,
 whether an expression matches a pattern.")
+    (properties '((hidden? . #t)))
     (license license:expat)))
 
-(define-public rust-md5
+(define-public rust-md5-0.6
   (package
     (name "rust-md5")
     (version "0.6.1")
@@ -1863,7 +1643,7 @@ whether an expression matches a pattern.")
       (origin
         (method url-fetch)
         (uri (crate-uri "md5" version))
-        (file-name (string-append name "-" version ".tar.gz"))
+        (file-name (string-append name "-" version ".crate"))
         (sha256
          (base32
           "17b2xm4h4cvxsdjsf3kdrzqv2za60kak961xzi5kmw6g6djcssvy"))))
@@ -1871,10 +1651,11 @@ whether an expression matches a pattern.")
     (home-page "https://github.com/stainless-steel/md5")
     (synopsis "MD5 hash function in Rust")
     (description "The package provides the MD5 hash function.")
+    (properties '((hidden? . #t)))
     (license (list license:asl2.0
                    license:expat))))
 
-(define-public rust-memmap
+(define-public rust-memmap-0.7
   (package
     (name "rust-memmap")
     (version "0.7.0")
@@ -1882,46 +1663,35 @@ whether an expression matches a pattern.")
       (origin
         (method url-fetch)
         (uri (crate-uri "memmap" version))
-        (file-name (string-append name "-" version ".tar.gz"))
+        (file-name (string-append name "-" version ".crate"))
         (sha256
          (base32
           "0ns7kkd1h4pijdkwfvw4qlbbmqmlmzwlq3g2676dcl5vwyazv1b5"))))
     (build-system cargo-build-system)
-    (arguments
-     `(#:cargo-inputs
-       (("rust-libc" ,rust-libc)
-        ("rust-winapi" ,rust-winapi))
-       #:cargo-development-inputs
-       (("rust-tempdir" ,rust-tempdir))))
     (home-page "https://github.com/danburkert/memmap-rs")
     (synopsis "Rust library for cross-platform memory mapped IO")
     (description
      "This package provides a cross-platform Rust API for memory-mapped
 file IO.")
+    (properties '((hidden? . #t)))
     (license (list license:asl2.0
                    license:expat))))
 
 (define-public rust-memmap-0.6
   (package
-    (inherit rust-memmap)
+    (inherit rust-memmap-0.7)
     (name "rust-memmap")
     (version "0.6.2")
     (source
       (origin
         (method url-fetch)
         (uri (crate-uri "memmap" version))
-        (file-name (string-append name "-" version ".tar.gz"))
+        (file-name (string-append name "-" version ".crate"))
         (sha256
          (base32
-          "1zy6s0ni0lx9rjzq3gq2zz9r8zgjmbp02332g3gsj4fyhv4s5zz2"))))
-    (arguments
-     `(#:cargo-inputs
-       (("rust-libc" ,rust-libc)
-        ("rust-winapi" ,rust-winapi))
-       #:cargo-development-inputs
-       (("rust-tempdir" ,rust-tempdir))))))
+          "1zy6s0ni0lx9rjzq3gq2zz9r8zgjmbp02332g3gsj4fyhv4s5zz2"))))))
 
-(define-public rust-mime
+(define-public rust-mime-0.3
   (package
     (name "rust-mime")
     (version "0.3.13")
@@ -1929,22 +1699,20 @@ file IO.")
       (origin
         (method url-fetch)
         (uri (crate-uri "mime" version))
-        (file-name (string-append name "-" version ".tar.gz"))
+        (file-name (string-append name "-" version ".crate"))
         (sha256
          (base32
           "09clbyvdkwflp8anwjhqdib0sw8191gphcchdp80nc8ayhhwl9ry"))))
     (build-system cargo-build-system)
-    (arguments
-     `(#:cargo-inputs
-       (("rust-unicase" ,rust-unicase))))
     (home-page "https://github.com/hyperium/mime")
     (synopsis "Strongly Typed Mimes")
     (description
      "Support MIME (HTTP Media Types) as strong types in Rust.")
+    (properties '((hidden? . #t)))
     (license (list license:asl2.0
                    license:expat))))
 
-(define-public rust-miniz-oxide
+(define-public rust-miniz-oxide-0.3
   (package
     (name "rust-miniz-oxide")
     (version "0.3.3")
@@ -1952,29 +1720,20 @@ file IO.")
       (origin
         (method url-fetch)
         (uri (crate-uri "miniz_oxide" version))
-        (file-name (string-append name "-" version ".tar.gz"))
+        (file-name (string-append name "-" version ".crate"))
         (sha256
          (base32 "1bmanbbcdmssfbgik3fs323g7vljc5wkjz7s61jsbbz2kg0nckrh"))))
     (build-system cargo-build-system)
-    (arguments
-     `(#:cargo-inputs
-       (("rust-adler32" ,rust-adler32))
-       #:phases
-       (modify-phases %standard-phases
-         (add-after 'unpack 'fix-tests
-           (lambda _
-             (substitute* "tests/test.rs"
-               (("../miniz/miniz.c") "Cargo.toml"))
-             #t)))))
     (home-page  "https://github.com/Frommi/miniz_oxide/tree/master/miniz_oxide")
     (synopsis "Pure rust replacement for the miniz DEFLATE/zlib encoder/decoder")
     (description
      "A pure rust replacement for the miniz DEFLATE/zlib encoder/decoder.  Using
 @code{flate2} with the @code{rust_backend} feature provides an easy to use
 streaming API for miniz_oxide.")
+    (properties '((hidden? . #t)))
     (license license:expat)))
 
-(define-public rust-miniz-sys
+(define-public rust-miniz-sys-0.1
   (package
     (name "rust-miniz-sys")
     (version "0.1.12")
@@ -1982,23 +1741,20 @@ streaming API for miniz_oxide.")
       (origin
         (method url-fetch)
         (uri (crate-uri "miniz-sys" version))
-        (file-name (string-append name "-" version ".tar.gz"))
+        (file-name (string-append name "-" version ".crate"))
         (sha256
          (base32
           "00l2r4anm8g35x0js2zfdnwfbrih9m43vphdpb77c5ga3kjkm7hy"))))
     (build-system cargo-build-system)
-    (arguments
-     `(#:cargo-inputs
-       (("rust-cc" ,rust-cc)
-        ("rust-libc" ,rust-libc))))
     (home-page "https://github.com/alexcrichton/flate2-rs")
     (synopsis "Bindings to the miniz.c library")
     (description
      "This package provides bindings to the @code{miniz.c} library.")
+    (properties '((hidden? . #t)))
     (license (list license:asl2.0
                    license:expat))))
 
-(define-public rust-miow
+(define-public rust-miow-0.3
   (package
     (name "rust-miow")
     (version "0.3.3")
@@ -2006,48 +1762,35 @@ streaming API for miniz_oxide.")
       (origin
         (method url-fetch)
         (uri (crate-uri "miow" version))
-        (file-name (string-append name "-" version ".tar.gz"))
+        (file-name (string-append name "-" version ".crate"))
         (sha256
          (base32
           "09ljvx6wg30f2xlv7b7hhpkw7k312n3hjgmrbhwzhz9x03ra0sir"))))
     (build-system cargo-build-system)
-    (arguments
-     `(#:cargo-inputs
-       (("rust-socket2" ,rust-socket2)
-        ("rust-winapi" ,rust-winapi))
-       #:cargo-development-inputs
-       (("rust-rand" ,rust-rand))))
     (home-page "https://github.com/alexcrichton/miow")
     (synopsis "Rust I/O library for Windows")
     (description
      "This package provides a zero overhead I/O library for Windows, focusing on
 IOCP and Async I/O abstractions.")
+    (properties '((hidden? . #t)))
     (license (list license:asl2.0
                    license:expat))))
 
 (define-public rust-miow-0.2
   (package
-    (inherit rust-miow)
+    (inherit rust-miow-0.3)
     (name "rust-miow")
     (version "0.2.1")
     (source
       (origin
         (method url-fetch)
         (uri (crate-uri "miow" version))
-        (file-name (string-append name "-" version ".tar.gz"))
+        (file-name (string-append name "-" version ".crate"))
         (sha256
          (base32
-          "06g9b8sqlh5gxakwqq4rrib07afwanfnxgxajrldwcgk3hxjy7wc"))))
-    (arguments
-     `(#:cargo-inputs
-       (("rust-kernel32-sys" ,rust-kernel32-sys)
-        ("rust-net2" ,rust-net2)
-        ("rust-winapi" ,rust-winapi-0.2)
-        ("rust-ws2-32-sys" ,rust-ws2-32-sys))
-       #:cargo-development-inputs
-       (("rust-rand" ,rust-rand-0.3))))))
+          "06g9b8sqlh5gxakwqq4rrib07afwanfnxgxajrldwcgk3hxjy7wc"))))))
 
-(define-public rust-modifier
+(define-public rust-modifier-0.1
   (package
     (name "rust-modifier")
     (version "0.1.0")
@@ -2055,7 +1798,7 @@ IOCP and Async I/O abstractions.")
       (origin
         (method url-fetch)
         (uri (crate-uri "modifier" version))
-        (file-name (string-append name "-" version ".tar.gz"))
+        (file-name (string-append name "-" version ".crate"))
         (sha256
          (base32
           "0n3fmgli1nsskl0whrfzm1gk0rmwwl6pw1q4nb9sqqmn5h8wkxa1"))))
@@ -2065,9 +1808,10 @@ IOCP and Async I/O abstractions.")
       "Chaining APIs for both self -> Self and &mut self methods.")
     (description
       "Chaining APIs for both self -> Self and &mut self methods.")
+    (properties '((hidden? . #t)))
     (license license:expat)))
 
-(define-public rust-net2
+(define-public rust-net2-0.2
   (package
     (name "rust-net2")
     (version "0.2.33")
@@ -2075,25 +1819,21 @@ IOCP and Async I/O abstractions.")
       (origin
         (method url-fetch)
         (uri (crate-uri "net2" version))
-        (file-name (string-append name "-" version ".tar.gz"))
+        (file-name (string-append name "-" version ".crate"))
         (sha256
          (base32
           "126g3fgfxp06zimc1l9iyxnn9cif1hjsg7sd81nlls5nnyghsma2"))))
     (build-system cargo-build-system)
-    (arguments
-     `(#:cargo-inputs
-       (("rust-cfg-if" ,rust-cfg-if)
-        ("rust-libc" ,rust-libc)
-        ("rust-winapi" ,rust-winapi))))
     (home-page "https://github.com/rust-lang-nursery/net2-rs")
     (synopsis "Extensions to the standard library's networking types")
     (description
      "This library contains extensions to the standard library's networking
 types as proposed in RFC 1158.")
+    (properties '((hidden? . #t)))
     (license (list license:asl2.0
                    license:expat))))
 
-(define-public rust-netlib-src
+(define-public rust-netlib-src-0.7
   (package
     (name "rust-netlib-src")
     (version "0.7.4")
@@ -2101,35 +1841,23 @@ types as proposed in RFC 1158.")
       (origin
         (method url-fetch)
         (uri (crate-uri "netlib-src" version))
-        (file-name (string-append name "-" version ".tar.gz"))
+        (file-name (string-append name "-" version ".crate"))
         (sha256
          (base32
           "112hwfw1zzdj10h3j213xxqjrq38iygb3nb3ijay65ycmrg819s4"))))
     (build-system cargo-build-system)
-    (arguments
-     `(#:cargo-development-inputs
-       (("rust-cmake" ,rust-cmake)
-        ("rust-libc" ,rust-libc))
-       #:phases
-       (modify-phases %standard-phases
-         (add-after 'unpack 'use-system-lapack
-           (lambda _
-             (delete-file-recursively "source")
-             (substitute* "Cargo.toml"
-               (("default .*")
-                "default = [\"system\"]\n"))
-             #t)))))
-    (inputs
-     `(("gfortran:lib" ,gfortran "lib")
-       ("lapack" ,lapack)))
+    ;(inputs
+    ; `(("gfortran:lib" ,gfortran "lib")
+    ;   ("lapack" ,lapack)))
     (home-page "https://github.com/blas-lapack-rs/netlib-src")
     (synopsis "Source of BLAS and LAPACK via Netlib")
     (description
      "The package provides a source of BLAS and LAPACK via Netlib.")
+    (properties '((hidden? . #t)))
     (license (list license:asl2.0
                    license:expat))))
 
-(define-public rust-libnghttp2-sys
+(define-public rust-libnghttp2-sys-0.1
   (package
     (name "rust-libnghttp2-sys")
     (version "0.1.2")
@@ -2137,26 +1865,22 @@ types as proposed in RFC 1158.")
       (origin
         (method url-fetch)
         (uri (crate-uri "libnghttp2-sys" version))
-        (file-name (string-append name "-" version ".tar.gz"))
+        (file-name (string-append name "-" version ".crate"))
         (sha256
          (base32
           "0qr4lyh7righx9n22c7amlcpk906rn1jnb2zd6gdfpa3yi24s982"))))
     (build-system cargo-build-system)
-    (arguments
-     `(#:cargo-inputs
-       (("rust-libc" ,rust-libc))
-       #:cargo-development-inputs
-       (("rust-cc" ,rust-cc))))
-    (inputs
-     `(("nghttp2" ,nghttp2)))
+    ;(inputs
+    ; `(("nghttp2" ,nghttp2)))
     (home-page "https://github.com/alexcrichton/nghttp2-rs")
     (synopsis "FFI bindings for libnghttp2 (nghttp2)")
     (description
      "This package provides FFI bindings for libnghttp2 (nghttp2).")
+    (properties '((hidden? . #t)))
     (license (list license:asl2.0
                    license:expat))))
 
-(define-public rust-libz-sys
+(define-public rust-libz-sys-1.0
   (package
     (name "rust-libz-sys")
     (version "1.0.25")
@@ -2164,35 +1888,31 @@ types as proposed in RFC 1158.")
       (origin
         (method url-fetch)
         (uri (crate-uri "libz-sys" version))
-        (file-name (string-append name "-" version ".tar.gz"))
+        (file-name (string-append name "-" version ".crate"))
         (sha256
          (base32
           "1gjycyl2283525abks98bhxa4r259m617xfm5z52p3p3c8ry9d9f"))))
     (build-system cargo-build-system)
-    (arguments
-     `(#:cargo-inputs
-       (("rust-libc" ,rust-libc)
-        ("rust-cc" ,rust-cc)
-        ("rust-pkg-config" ,rust-pkg-config)
-        ("rust-vcpkg" ,rust-vcpkg))
-       #:phases
-       (modify-phases %standard-phases
-         (add-after 'unpack 'delete-vendored-zlib
-           (lambda _
-             (delete-file-recursively "src/zlib")
-             #t)))))
-    (inputs
-     `(("pkg-config" ,pkg-config)
-       ("zlib" ,zlib)))
+    ;(arguments
+    ; `(#:phases
+    ;   (modify-phases %standard-phases
+    ;     (add-after 'unpack 'delete-vendored-zlib
+    ;       (lambda _
+    ;         (delete-file-recursively "src/zlib")
+    ;         #t)))))
+    ;(inputs
+    ; `(("pkg-config" ,pkg-config)
+    ;   ("zlib" ,zlib)))
     (home-page "https://github.com/rust-lang/libz-sys")
     (synopsis "Bindings to the system libz library")
     (description
      "This package provides bindings to the system @code{libz} library (also
 known as zlib).")
+    (properties '((hidden? . #t)))
     (license (list license:asl2.0
                    license:expat))))
 
-(define-public rust-nodrop
+(define-public rust-nodrop-0.1
   (package
     (name "rust-nodrop")
     (version "0.1.13")
@@ -2200,24 +1920,22 @@ known as zlib).")
       (origin
         (method url-fetch)
         (uri (crate-uri "nodrop" version))
-        (file-name (string-append name "-" version ".tar.gz"))
+        (file-name (string-append name "-" version ".crate"))
         (sha256
          (base32
           "0if9ifn6rvar5jirx4b3qh4sl5kjkmcifycvzhxa9j3crkfng5ig"))))
     (build-system cargo-build-system)
-    (arguments
-     `(#:cargo-inputs
-       (("rust-nodrop-union" ,rust-nodrop-union))))
     (home-page "https://github.com/bluss/arrayvec")
     (synopsis "Wrapper type to inhibit drop (destructor)")
     (description "This package provides a wrapper type to inhibit drop
 (destructor).  Use @code{std::mem::ManuallyDrop} instead!")
+    (properties '((hidden? . #t)))
     (license (list license:asl2.0
                    license:expat))))
 
 ;; This package requires features which are unavailable
 ;; on the stable releases of Rust.
-(define-public rust-nodrop-union
+(define-public rust-nodrop-union-0.1
   (package
     (name "rust-nodrop-union")
     (version "0.1.10")
@@ -2225,7 +1943,7 @@ known as zlib).")
       (origin
         (method url-fetch)
         (uri (crate-uri "nodrop-union" version))
-        (file-name (string-append name "-" version ".tar.gz"))
+        (file-name (string-append name "-" version ".crate"))
         (sha256
          (base32
           "0jsnkdn9l8jlmb9h4wssi76sxnyxwnyi00p6y1p2gdq7c1gdw2b7"))))
@@ -2239,7 +1957,7 @@ implementation (which is unstable / requires nightly).")
     (license (list license:asl2.0
                    license:expat))))
 
-(define-public rust-num-cpus
+(define-public rust-num-cpus-1.10
   (package
     (name "rust-num-cpus")
     (version "1.10.1")
@@ -2247,24 +1965,20 @@ implementation (which is unstable / requires nightly).")
       (origin
         (method url-fetch)
         (uri (crate-uri "num_cpus" version))
-        (file-name (string-append name "-" version ".tar.gz"))
+        (file-name (string-append name "-" version ".crate"))
         (sha256
          (base32
           "0wrj3zvj6h3q26sqj9zxpd59frjb54n7jhjwf307clq31ic47vxw"))))
     (build-system cargo-build-system)
-    (arguments
-     `(#:cargo-inputs
-       (("rust-libc" ,rust-libc))
-       #:cargo-development-inputs
-       (("rust-doc-comment" ,rust-doc-comment))))
     (home-page "https://github.com/seanmonstar/num_cpus")
     (synopsis "Get the number of CPUs on a machine")
     (description
      "Get the number of CPUs on a machine.")
+    (properties '((hidden? . #t)))
     (license (list license:asl2.0
                    license:expat))))
 
-(define-public rust-num-integer
+(define-public rust-num-integer-0.1
   (package
     (name "rust-num-integer")
     (version "0.1.41")
@@ -2273,23 +1987,20 @@ implementation (which is unstable / requires nightly).")
        (method url-fetch)
        (uri (crate-uri "num-integer" version))
        (file-name
-        (string-append name "-" version ".tar.gz"))
+        (string-append name "-" version ".crate"))
        (sha256
         (base32
          "02dwjjpfbi16c71fq689s4sw3ih52cvfzr5z5gs6qpr5z0g58pmq"))))
     (build-system cargo-build-system)
-    (arguments
-     `(#:cargo-inputs
-       (("rust-autocfg" ,rust-autocfg)
-        ("rust-num-traits" ,rust-num-traits))))
     (home-page "https://github.com/rust-num/num-integer")
     (synopsis "Integer traits and functions")
     (description "Integer traits and functions.")
+    (properties '((hidden? . #t)))
     ;; Dual licensed.
     (license (list license:asl2.0
                    license:expat))))
 
-(define-public rust-num-iter
+(define-public rust-num-iter-0.1
   (package
     (name "rust-num-iter")
     (version "0.1.39")
@@ -2297,25 +2008,20 @@ implementation (which is unstable / requires nightly).")
       (origin
         (method url-fetch)
         (uri (crate-uri "num-iter" version))
-        (file-name (string-append name "-" version ".tar.gz"))
+        (file-name (string-append name "-" version ".crate"))
         (sha256
          (base32
           "0bhk2qbr3261r6zvfc58lz4spfqjhvdripxgz5mks5rd85r55gbn"))))
     (build-system cargo-build-system)
-    (arguments
-     `(#:cargo-inputs
-       (("rust-num-integer" ,rust-num-integer)
-        ("rust-num-traits" ,rust-num-traits))
-       #:cargo-development-inputs
-       (("rust-autocfg" ,rust-autocfg))))
     (home-page "https://github.com/rust-num/num-iter")
     (synopsis "External iterators for generic mathematics")
     (description
      "This crate provides external iterators for generic mathematics.")
+    (properties '((hidden? . #t)))
     (license (list license:asl2.0
                    license:expat))))
 
-(define-public rust-num-traits
+(define-public rust-num-traits-0.2
   (package
     (name "rust-num-traits")
     (version "0.2.8")
@@ -2324,40 +2030,35 @@ implementation (which is unstable / requires nightly).")
        (method url-fetch)
        (uri (crate-uri "num-traits" version))
        (file-name
-        (string-append name "-" version ".tar.gz"))
+        (string-append name "-" version ".crate"))
        (sha256
         (base32
          "0clvrm34rrqc8p6gq5ps5fcgws3kgq5knh7nlqxf2ayarwks9abb"))))
     (build-system cargo-build-system)
-    (arguments
-     `(#:cargo-inputs
-       (("rust-autocfg" ,rust-autocfg))))
     (home-page "https://github.com/rust-num/num-traits")
     (synopsis "Numeric traits for generic mathematics")
     (description "Numeric traits for generic mathematics.")
+    (properties '((hidden? . #t)))
     ;; Dual licensed.
     (license (list license:asl2.0
                    license:expat))))
 
 (define-public rust-num-traits-0.1
   (package
-    (inherit rust-num-traits)
+    (inherit rust-num-traits-0.2)
     (name "rust-num-traits")
     (version "0.1.43")
     (source
       (origin
         (method url-fetch)
         (uri (crate-uri "num-traits" version))
-        (file-name (string-append name "-" version ".tar.gz"))
+        (file-name (string-append name "-" version ".crate"))
         (sha256
          (base32
           "0c9whknf2dm74a3cqirafy6gj83a76gl56g4v3g19k6lkwz13rcj"))))
-    (build-system cargo-build-system)
-    (arguments
-     `(#:cargo-inputs
-       (("rust-num-traits" ,rust-num-traits))))))
+    (build-system cargo-build-system)))
 
-(define-public rust-openssl-probe
+(define-public rust-openssl-probe-0.1
   (package
     (name "rust-openssl-probe")
     (version "0.1.2")
@@ -2365,7 +2066,7 @@ implementation (which is unstable / requires nightly).")
       (origin
         (method url-fetch)
         (uri (crate-uri "openssl-probe" version))
-        (file-name (string-append name "-" version ".tar.gz"))
+        (file-name (string-append name "-" version ".crate"))
         (sha256
          (base32
           "1pijrdifgsdwd45b08c2g0dsmnhz7c3kmagb70839ngrd7d29bvp"))))
@@ -2375,10 +2076,11 @@ implementation (which is unstable / requires nightly).")
     (description
      "This package provides a tool to find SSL certificate locations on the
 system for OpenSSL.")
+    (properties '((hidden? . #t)))
     (license (list license:asl2.0
                    license:expat))))
 
-(define-public rust-openssl-src
+(define-public rust-openssl-src-111
   (package
     (name "rust-openssl-src")
     (version "111.6.0+1.1.1d")
@@ -2386,21 +2088,20 @@ system for OpenSSL.")
       (origin
         (method url-fetch)
         (uri (crate-uri "openssl-src" version))
-        (file-name (string-append name "-" version ".tar.gz"))
+        (file-name (string-append name "-" version ".crate"))
         (sha256
          (base32
           "172xh95hp7aygahah1940kg1dnx60c5m80cwj5hgi8x7x0fxmhmr"))))
     (build-system cargo-build-system)
-    (arguments
-      `(#:cargo-inputs (("rust-cc" ,rust-cc))))
     (home-page "https://github.com/alexcrichton/openssl-src-rs")
     (synopsis "Source of OpenSSL for rust crates")
     (description
      "This package contains the source of OpenSSL and logic to build it.")
+    (properties '((hidden? . #t)))
     (license (list license:asl2.0
                    license:expat))))
 
-(define-public rust-openssl-sys
+(define-public rust-openssl-sys-0.9
   (package
     (name "rust-openssl-sys")
     (version "0.9.50")
@@ -2408,37 +2109,29 @@ system for OpenSSL.")
       (origin
         (method url-fetch)
         (uri (crate-uri "openssl-sys" version))
-        (file-name (string-append name "-" version ".tar.gz"))
+        (file-name (string-append name "-" version ".crate"))
         (sha256
          (base32 "1dn3capgiz77s6rpmc2sf8gadwkmhwgfd6mw4rcnnm9jp36dqhic"))))
     (build-system cargo-build-system)
-    (arguments
-     `(#:cargo-inputs
-       (("rust-autocfg" ,rust-autocfg)
-        ("rust-libc" ,rust-libc))
-       #:cargo-development-inputs
-       (("rust-autocfg" ,rust-autocfg)
-        ("rust-cc" ,rust-cc)
-        ("rust-openssl-src" ,rust-openssl-src)
-        ("rust-pkg-config" ,rust-pkg-config)
-        ("rust-vcpkg" ,rust-vcpkg))
-       #:phases
-       (modify-phases %standard-phases
-         (add-after 'unpack 'find-openssl
-           (lambda* (#:key inputs #:allow-other-keys)
-             (let ((openssl (assoc-ref inputs "openssl")))
-               (setenv "OPENSSL_DIR" openssl))
-             #t)))))
-    (inputs
-     `(("openssl" ,openssl)
-       ("pkg-config" ,pkg-config)))
+    ;(arguments
+    ; `(#:phases
+    ;   (modify-phases %standard-phases
+    ;     (add-after 'unpack 'find-openssl
+    ;       (lambda* (#:key inputs #:allow-other-keys)
+    ;         (let ((openssl (assoc-ref inputs "openssl")))
+    ;           (setenv "OPENSSL_DIR" openssl))
+    ;         #t)))))
+    ;(inputs
+    ; `(("openssl" ,openssl)
+    ;   ("pkg-config" ,pkg-config)))
     (home-page "https://github.com/sfackler/rust-openssl")
     (synopsis "FFI bindings to OpenSSL")
     (description
      "This package provides FFI bindings to OpenSSL for use in rust crates.")
+    (properties '((hidden? . #t)))
     (license license:expat)))
 
-(define-public rust-owning-ref
+(define-public rust-owning-ref-0.4
   (package
     (name "rust-owning-ref")
     (version "0.4.0")
@@ -2446,23 +2139,21 @@ system for OpenSSL.")
       (origin
         (method url-fetch)
         (uri (crate-uri "owning_ref" version))
-        (file-name (string-append name "-" version ".tar.gz"))
+        (file-name (string-append name "-" version ".crate"))
         (sha256
          (base32
           "04zgwy77lin8qz398s6g44467pd6kjhbrlqifkia5rkr47mbi929"))))
     (build-system cargo-build-system)
-    (arguments
-     `(#:cargo-inputs
-       (("rust-stable-deref-trait" ,rust-stable-deref-trait))))
     (home-page "https://github.com/Kimundi/owning-ref-rs")
     (synopsis "Create references that carry their owner with them")
     (description
      "This package provides a library for creating references that carry their
 owner with them.  This can sometimes be useful because Rust borrowing rules
 normally prevent moving a type that has been borrowed from.")
+    (properties '((hidden? . #t)))
     (license license:expat)))
 
-(define-public rust-parity-wasm
+(define-public rust-parity-wasm-0.40
   (package
     (name "rust-parity-wasm")
     (version "0.40.1")
@@ -2470,24 +2161,21 @@ normally prevent moving a type that has been borrowed from.")
       (origin
         (method url-fetch)
         (uri (crate-uri "parity-wasm" version))
-        (file-name (string-append name "-" version ".tar.gz"))
+        (file-name (string-append name "-" version ".crate"))
         (sha256
          (base32
           "1p84f0k36q05j18jy66n122lyali794cj78hbxgy9wj6si84plqd"))))
     (build-system cargo-build-system)
-    (arguments
-     `(#:cargo-development-inputs
-       (("rust-time" ,rust-time))
-       #:tests? #f)) ; Test files are not included in release.
     (home-page "https://github.com/paritytech/parity-wasm")
     (synopsis "Low-level WebAssembly format library")
     (description
      "This package provides a WebAssembly binary format serialization,
 deserialization, and interpreter in Rust.")
+    (properties '((hidden? . #t)))
     (license (list license:asl2.0
                    license:expat))))
 
-(define-public rust-peeking-take-while
+(define-public rust-peeking-take-while-0.1
   (package
     (name "rust-peeking-take-while")
     (version "0.1.2")
@@ -2495,7 +2183,7 @@ deserialization, and interpreter in Rust.")
       (origin
         (method url-fetch)
         (uri (crate-uri "peeking_take_while" version))
-        (file-name (string-append name "-" version ".tar.gz"))
+        (file-name (string-append name "-" version ".crate"))
         (sha256
          (base32
           "16bhqr6rdyrp12zv381cxaaqqd0pwysvm1q8h2ygihvypvfprc8r"))))
@@ -2507,10 +2195,11 @@ deserialization, and interpreter in Rust.")
 value.  This allows you to use @code{Iterator::by_ref} and
 @code{Iterator::take_while} together, and still get the first value for which
 the @code{take_while} predicate returned false after dropping the @code{by_ref}.")
+    (properties '((hidden? . #t)))
     (license (list license:asl2.0
                    license:expat))))
 
-(define-public rust-percent-encoding
+(define-public rust-percent-encoding-2.1
   (package
     (name "rust-percent-encoding")
     (version "2.1.0")
@@ -2518,7 +2207,7 @@ the @code{take_while} predicate returned false after dropping the @code{by_ref}.
       (origin
         (method url-fetch)
         (uri (crate-uri "percent-encoding" version))
-        (file-name (string-append name "-" version ".tar.gz"))
+        (file-name (string-append name "-" version ".crate"))
         (sha256
          (base32
           "0bp3zrsk3kr47fbpipyczidbbx4g54lzxdm77ni1i3qws10mdzfl"))))
@@ -2526,24 +2215,25 @@ the @code{take_while} predicate returned false after dropping the @code{by_ref}.
     (home-page "https://github.com/servo/rust-url/")
     (synopsis "Percent encoding and decoding")
     (description "This crate provides percent encoding and decoding.")
+    (properties '((hidden? . #t)))
     (license (list license:asl2.0
                    license:expat))))
 
-(define-public rust-percent-encoding-1
+(define-public rust-percent-encoding-1.0
   (package
-    (inherit rust-percent-encoding)
+    (inherit rust-percent-encoding-2.1)
     (name "rust-percent-encoding")
     (version "1.0.1")
     (source
       (origin
         (method url-fetch)
         (uri (crate-uri "percent-encoding" version))
-        (file-name (string-append name "-" version ".tar.gz"))
+        (file-name (string-append name "-" version ".crate"))
         (sha256
          (base32
           "0cgq08v1fvr6bs5fvy390cz830lq4fak8havdasdacxcw790s09i"))))))
 
-(define-public rust-permutohedron
+(define-public rust-permutohedron-0.2
   (package
     (name "rust-permutohedron")
     (version "0.2.4")
@@ -2551,7 +2241,7 @@ the @code{take_while} predicate returned false after dropping the @code{by_ref}.
       (origin
         (method url-fetch)
         (uri (crate-uri "permutohedron" version))
-        (file-name (string-append name "-" version ".tar.gz"))
+        (file-name (string-append name "-" version ".crate"))
         (sha256
          (base32
           "0b1pzh48j86v46wxngch6k1kx9cdw3jr3lwa86gd6jd4bmxzz1xn"))))
@@ -2562,10 +2252,11 @@ the @code{take_while} predicate returned false after dropping the @code{by_ref}.
      "Generate permutations of sequences.  Either lexicographical order
 permutations, or a minimal swaps permutation sequence implemented using Heap's
 algorithm.")
+    (properties '((hidden? . #t)))
     (license (list license:asl2.0
                    license:expat))))
 
-(define-public rust-pico-sys
+(define-public rust-pico-sys-0.0
   (package
     (name "rust-pico-sys")
     (version "0.0.1")
@@ -2573,22 +2264,19 @@ algorithm.")
       (origin
         (method url-fetch)
         (uri (crate-uri "pico-sys" version))
-        (file-name (string-append name "-" version ".tar.gz"))
+        (file-name (string-append name "-" version ".crate"))
         (sha256
          (base32
           "1q5pg0ms6szz6b5h26h4k40zb76zbwwjgyigac4wly9qngdj4yl5"))))
     (build-system cargo-build-system)
-    (arguments
-     `(#:cargo-inputs
-       (("rust-gcc" ,rust-gcc)
-        ("rust-libc" ,rust-libc))))
     (home-page "https://github.com/reem/rust-pico-sys")
     (synopsis "Bindings to the PicoHTTPParser")
     (description
      "This package provides bindings to the PicoHTTPParser.")
+    (properties '((hidden? . #t)))
     (license license:expat)))
 
-(define-public rust-pin-utils
+(define-public rust-pin-utils-0.1
   (package
     (name "rust-pin-utils")
     (version "0.1.0-alpha.4")
@@ -2596,7 +2284,7 @@ algorithm.")
       (origin
         (method url-fetch)
         (uri (crate-uri "pin-utils" version))
-        (file-name (string-append name "-" version ".tar.gz"))
+        (file-name (string-append name "-" version ".crate"))
         (sha256
          (base32
           "11xmyx00n4m37d546by2rxb8ryxs12v55cc172i3yak1rqccd52q"))))
@@ -2604,10 +2292,11 @@ algorithm.")
     (home-page "https://github.com/rust-lang-nursery/pin-utils")
     (synopsis "Utilities for pinning")
     (description "This crate provides utilities for pinning values on the stack.")
+    (properties '((hidden? . #t)))
     (license (list license:asl2.0
                    license:expat))))
 
-(define-public rust-pkg-config
+(define-public rust-pkg-config-0.3
   (package
     (name "rust-pkg-config")
     (version "0.3.14")
@@ -2615,25 +2304,23 @@ algorithm.")
       (origin
         (method url-fetch)
         (uri (crate-uri "pkg-config" version))
-        (file-name (string-append name "-" version ".tar.gz"))
+        (file-name (string-append name "-" version ".crate"))
         (sha256
          (base32
           "135ia995lqzr0gxpk85h0bjxf82kj6hbxdx924sh9jdln6r8wvk7"))))
     (build-system cargo-build-system)
-    (arguments
-     `(#:cargo-development-inputs
-       (("rust-lazy-static" ,rust-lazy-static))))
-    (inputs
-     `(("pkg-config" ,pkg-config)))
+    ;(inputs
+    ; `(("pkg-config" ,pkg-config)))
     (home-page "https://github.com/rust-lang/pkg-config-rs")
     (synopsis "Library to run the pkg-config system tool")
     (description
      "A library to run the pkg-config system tool at build time in order to be
 used in Cargo build scripts.")
+    (properties '((hidden? . #t)))
     (license (list license:asl2.0
                    license:expat))))
 
-(define-public rust-plain
+(define-public rust-plain-0.2
   (package
     (name "rust-plain")
     (version "0.2.3")
@@ -2641,7 +2328,7 @@ used in Cargo build scripts.")
       (origin
         (method url-fetch)
         (uri (crate-uri "plain" version))
-        (file-name (string-append name "-" version ".tar.gz"))
+        (file-name (string-append name "-" version ".crate"))
         (sha256
          (base32
           "19n1xbxb4wa7w891268bzf6cbwq4qvdb86bik1z129qb0xnnnndl"))))
@@ -2650,10 +2337,11 @@ used in Cargo build scripts.")
     (synopsis "Rust library that allows reinterpreting data safely")
     (description "This package provides a small Rust library that allows users
  to reinterpret data of certain types safely.")
+    (properties '((hidden? . #t)))
     (license (list license:asl2.0
                    license:expat))))
 
-(define-public rust-plugin
+(define-public rust-plugin-0.2
   (package
     (name "rust-plugin")
     (version "0.2.6")
@@ -2661,23 +2349,19 @@ used in Cargo build scripts.")
       (origin
         (method url-fetch)
         (uri (crate-uri "plugin" version))
-        (file-name (string-append name "-" version ".tar.gz"))
+        (file-name (string-append name "-" version ".crate"))
         (sha256
          (base32
           "1q7nghkpvxxr168y2jnzh3w7qc9vfrby9n7ygy3xpj0bj71hsshs"))))
     (build-system cargo-build-system)
-    (arguments
-     `(#:cargo-inputs
-       (("rust-typemap" ,rust-typemap))
-       #:cargo-development-inputs
-       (("rust-void" ,rust-void))))
     (home-page "https://github.com/reem/rust-plugin")
     (synopsis "Lazily evaluated, order-independent plugins for extensible types")
     (description
      "Lazily evaluated, order-independent plugins for extensible types.")
+    (properties '((hidden? . #t)))
     (license license:expat)))
 
-(define-public rust-pocket-resources
+(define-public rust-pocket-resources-0.3
   (package
     (name "rust-pocket-resources")
     (version "0.3.2")
@@ -2685,7 +2369,7 @@ used in Cargo build scripts.")
       (origin
         (method url-fetch)
         (uri (crate-uri "pocket-resources" version))
-        (file-name (string-append name "-" version ".tar.gz"))
+        (file-name (string-append name "-" version ".crate"))
         (sha256
          (base32
           "1n2i5vmi8fdbw89wm5nz1ws1z9f1qax911p6ksg4scmdg23z6df1"))))
@@ -2694,9 +2378,10 @@ used in Cargo build scripts.")
     (synopsis "Include resources in your applications")
     (description "This crate allows you to include resources in your
 applications.")
+    (properties '((hidden? . #t)))
     (license license:expat)))
 
-(define-public rust-ppv-lite86
+(define-public rust-ppv-lite86-0.2
   (package
     (name "rust-ppv-lite86")
     (version "0.2.5")
@@ -2704,7 +2389,7 @@ applications.")
       (origin
         (method url-fetch)
         (uri (crate-uri "ppv-lite86" version))
-        (file-name (string-append name "-" version ".tar.gz"))
+        (file-name (string-append name "-" version ".crate"))
         (sha256
          (base32
           "06snnv338w341nicfqba2jgln5dsla72ndkgrw7h1dfdb3vgkjz3"))))
@@ -2713,10 +2398,11 @@ applications.")
     (synopsis "Implementation of the crypto-simd API for x86")
     (description "This crate provides an implementation of the crypto-simd API
 for x86.")
+    (properties '((hidden? . #t)))
     (license (list license:asl2.0
                    license:expat))))
 
-(define-public rust-proc-macro2
+(define-public rust-proc-macro2-0.4
   (package
     (name "rust-proc-macro2")
     (version "0.4.30")
@@ -2725,23 +2411,21 @@ for x86.")
         (method url-fetch)
         (uri (crate-uri "proc-macro2" version))
         (file-name
-          (string-append name "-" version ".tar.gz"))
+          (string-append name "-" version ".crate"))
         (sha256
           (base32
             "0nd71fl24sys066jrha6j7i34nfkjv44yzw8yww9742wmc8j0gfg"))))
     (build-system cargo-build-system)
-    (arguments
-      `(#:cargo-inputs (("rust-unicode-xid" ,rust-unicode-xid-0.1))
-        #:cargo-development-inputs (("rust-quote" ,rust-quote))))
     (home-page "https://github.com/alexcrichton/proc-macro2")
     (synopsis "Stable implementation of the upcoming new `proc_macro` API")
     (description "This package provides a stable implementation of the upcoming new
 `proc_macro` API.  Comes with an option, off by default, to also reimplement itself
 in terms of the upstream unstable API.")
+    (properties '((hidden? . #t)))
     ;; Dual licensed.
     (license (list license:asl2.0 license:expat))))
 
-(define-public rust-quick-error
+(define-public rust-quick-error-1.2
   (package
     (name "rust-quick-error")
     (version "1.2.2")
@@ -2749,7 +2433,7 @@ in terms of the upstream unstable API.")
       (origin
         (method url-fetch)
         (uri (crate-uri "quick-error" version))
-        (file-name (string-append name "-" version ".tar.gz"))
+        (file-name (string-append name "-" version ".crate"))
         (sha256
          (base32
           "1w6kgwwv7p7zr0yyg5rb315lkk24bimywklwx7fsvsbwi10bjx4j"))))
@@ -2758,10 +2442,11 @@ in terms of the upstream unstable API.")
     (synopsis "Macro which makes error types pleasant to write")
     (description "This crate provides a macro which makes error types pleasant
 to write.")
+    (properties '((hidden? . #t)))
     (license (list license:asl2.0
                    license:expat))))
 
-(define-public rust-quote
+(define-public rust-quote-0.6
   (package
     (name "rust-quote")
     (version "0.6.12")
@@ -2770,20 +2455,19 @@ to write.")
         (method url-fetch)
         (uri (crate-uri "quote" version))
         (file-name
-          (string-append name "-" version ".tar.gz"))
+          (string-append name "-" version ".crate"))
         (sha256
           (base32
             "1nw0klza45hf127kfyrpxsxd5jw2l6h21qxalil3hkr7bnf7kx7s"))))
     (build-system cargo-build-system)
-    (arguments
-      `(#:cargo-inputs (("rust-proc-macro2" ,rust-proc-macro2))))
     (home-page "https://github.com/dtolnay/quote")
     (synopsis "Quasi-quoting macro quote!(...)")
     (description "Quasi-quoting macro quote!(...)")
+    (properties '((hidden? . #t)))
     ;; Dual licensed.
     (license (list license:asl2.0 license:expat))))
 
-(define-public rust-rand
+(define-public rust-rand-0.4
   (package
     (name "rust-rand")
     (version "0.4.3")
@@ -2791,43 +2475,35 @@ to write.")
       (origin
         (method url-fetch)
         (uri (crate-uri "rand" version))
-        (file-name (string-append name "-" version ".tar.gz"))
+        (file-name (string-append name "-" version ".crate"))
         (sha256
          (base32
           "1gfgnqfj2pyh27dcb720jpawskllwnbvxh816ddyykv269xz8ml3"))))
     (build-system cargo-build-system)
-    (arguments
-     `(#:cargo-inputs
-       (("rust-fuchsia-zircon" ,rust-fuchsia-zircon)
-        ("rust-libc" ,rust-libc)
-        ("rust-winapi" ,rust-winapi))))
     (home-page "https://crates.io/crates/rand")
     (synopsis "Random number generators and other randomness functionality")
     (description
      "Rand provides utilities to generate random numbers, to convert them to
 useful types and distributions, and some randomness-related algorithms.")
+    (properties '((hidden? . #t)))
     (license (list license:asl2.0
                    license:expat))))
 
 (define-public rust-rand-0.3
   (package
-    (inherit rust-rand)
+    (inherit rust-rand-0.4)
     (name "rust-rand")
     (version "0.3.23")
     (source
       (origin
         (method url-fetch)
         (uri (crate-uri "rand" version))
-        (file-name (string-append name "-" version ".tar.gz"))
+        (file-name (string-append name "-" version ".crate"))
         (sha256
          (base32
-          "0v679h38pjjqj5h4md7v2slsvj6686qgcn7p9fbw3h43iwnk1b34"))))
-    (arguments
-     `(#:cargo-inputs
-       (("rust-libc" ,rust-libc)
-        ("rust-rand" ,rust-rand))))))
+          "0v679h38pjjqj5h4md7v2slsvj6686qgcn7p9fbw3h43iwnk1b34"))))))
 
-(define-public rust-rawpointer
+(define-public rust-rawpointer-0.1
   (package
     (name "rust-rawpointer")
     (version "0.1.0")
@@ -2835,7 +2511,7 @@ useful types and distributions, and some randomness-related algorithms.")
       (origin
         (method url-fetch)
         (uri (crate-uri "rawpointer" version))
-        (file-name (string-append name "-" version ".tar.gz"))
+        (file-name (string-append name "-" version ".crate"))
         (sha256
          (base32
           "06ghpm9y7gacks78s3maakha07kbnwrxif5q37r2l7z1sali3b7b"))))
@@ -2845,12 +2521,13 @@ useful types and distributions, and some randomness-related algorithms.")
     (description "Extra methods for raw pointers.  For example
 @code{.post_inc()} and @code{.pre_dec()} (c.f. @code{ptr++} and @code{--ptr})
 and @code{ptrdistance}.")
+    (properties '((hidden? . #t)))
     (license (list license:asl2.0
                    license:expat))))
 
 ;; This package requires features which are unavailable
 ;; on the stable releases of Rust.
-(define-public rust-redox-syscall ; guix upstreamable
+(define-public rust-redox-syscall-0.1
   (package
     (name "rust-redox-syscall")
     (version "0.1.56")
@@ -2858,7 +2535,7 @@ and @code{ptrdistance}.")
       (origin
         (method url-fetch)
         (uri (crate-uri "redox_syscall" version))
-        (file-name (string-append name "-" version ".tar.gz"))
+        (file-name (string-append name "-" version ".crate"))
         (sha256
          (base32
           "110y7dyfm2vci4x5vk7gr0q551dvp31npl99fnsx2fb17wzwcf94"))))
@@ -2870,7 +2547,7 @@ system calls.")
     (properties '((hidden? . #t)))
     (license license:expat)))
 
-(define-public rust-regex-syntax
+(define-public rust-regex-syntax-0.6
   (package
     (name "rust-regex-syntax")
     (version "0.6.10")
@@ -2878,22 +2555,20 @@ system calls.")
       (origin
         (method url-fetch)
         (uri (crate-uri "regex-syntax" version))
-        (file-name (string-append name "-" version ".tar.gz"))
+        (file-name (string-append name "-" version ".crate"))
         (sha256
          (base32
           "0p47lf38yj2g2fnmvnraccqlxwk35zr76hlnqi8yva932nzqam6d"))))
     (build-system cargo-build-system)
-    (arguments
-     `(#:cargo-inputs
-       (("rust-ucd-util" ,rust-ucd-util))))
     (home-page "https://github.com/rust-lang/regex")
     (synopsis "Regular expression parser")
     (description
      "This package provides a regular expression parser.")
+    (properties '((hidden? . #t)))
     (license (list license:asl2.0
                    license:expat))))
 
-(define-public rust-remove-dir-all
+(define-public rust-remove-dir-all-0.5
   (package
     (name "rust-remove-dir-all")
     (version "0.5.2")
@@ -2901,31 +2576,21 @@ system calls.")
       (origin
         (method url-fetch)
         (uri (crate-uri "remove_dir_all" version))
-        (file-name (string-append name "-" version ".tar.gz"))
+        (file-name (string-append name "-" version ".crate"))
         (sha256
          (base32
           "0bkrlyg26mgizpiy1yb2hhpgscxcag8r5fnckqsvk25608vzm0sa"))))
     (build-system cargo-build-system)
-    (arguments
-     `(#:cargo-inputs
-       (("rust-winapi" ,rust-winapi))
-       #:cargo-development-inputs
-       (("rust-doc-comment" ,rust-doc-comment))
-       #:phases
-       (modify-phases %standard-phases
-         (add-after 'unpack 'fix-source
-           ;; The test phase expects there to be a README.md in the root directory.
-           (lambda _
-             (invoke "touch" "README.md"))))))
     (home-page "https://github.com/XAMPPRocky/remove_dir_all")
     (synopsis "Implementation of remove_dir_all for Windows")
     (description
      "This package provides a safe, reliable implementation of
 @code{remove_dir_all} for Windows")
+    (properties '((hidden? . #t)))
     (license (list license:asl2.0
                    license:expat))))
 
-(define-public rust-resolv-conf
+(define-public rust-resolv-conf-0.6
   (package
     (name "rust-resolv-conf")
     (version "0.6.2")
@@ -2933,24 +2598,20 @@ system calls.")
       (origin
         (method url-fetch)
         (uri (crate-uri "resolv-conf" version))
-        (file-name (string-append name "-" version ".tar.gz"))
+        (file-name (string-append name "-" version ".crate"))
         (sha256
          (base32
           "1jvdsmksdf6yiipm3aqahyv8n1cjd7wqc8sa0p0gzsax3fmb8qxj"))))
     (build-system cargo-build-system)
-    (arguments
-     `(#:cargo-inputs
-       (("rust-quick-error" ,rust-quick-error)
-        ("rust-hostname" ,rust-hostname))
-       #:cargo-test-flags '("--release" "--lib" "--examples"))) ; doc tests fail
     (home-page "https://github.com/tailhook/resolv-conf")
     (synopsis "/etc/resolv.conf parser")
     (description
      "An /etc/resolv.conf parser crate for Rust.")
+    (properties '((hidden? . #t)))
     (license (list license:asl2.0
                    license:expat))))
 
-(define-public rust-rustc-demangle
+(define-public rust-rustc-demangle-0.1
   (package
     (name "rust-rustc-demangle")
     (version "0.1.16")
@@ -2958,25 +2619,20 @@ system calls.")
       (origin
         (method url-fetch)
         (uri (crate-uri "rustc-demangle" version))
-        (file-name (string-append name "-" version ".tar.gz"))
+        (file-name (string-append name "-" version ".crate"))
         (sha256
          (base32
           "10qp42sl1wrdbgbbh8rnay2grm976z7hqgz32c4y09l1c071qsac"))))
     (build-system cargo-build-system)
-    (arguments
-     `(#:cargo-inputs
-       (("rust-compiler-builtins"
-         ,rust-compiler-builtins)
-        ("rust-rustc-std-workspace-core"
-         ,rust-rustc-std-workspace-core))))
     (home-page "https://github.com/alexcrichton/rustc-demangle")
     (synopsis "Rust compiler symbol demangling")
     (description
      "This package demanges the symbols from the Rust compiler.")
+    (properties '((hidden? . #t)))
     (license (list license:asl2.0
                    license:expat))))
 
-(define-public rust-rustc-hash
+(define-public rust-rustc-hash-1.0
   (package
     (name "rust-rustc-hash")
     (version "1.0.0")
@@ -2984,7 +2640,7 @@ system calls.")
       (origin
         (method url-fetch)
         (uri (crate-uri "rustc-hash" version))
-        (file-name (string-append name "-" version ".tar.gz"))
+        (file-name (string-append name "-" version ".crate"))
         (sha256
          (base32
           "114bf72466bl63i5hh8fgqfnhihs0w1m9c9jz505095agfixnvg0"))))
@@ -2993,10 +2649,11 @@ system calls.")
     (synopsis "Speedy, non-cryptographic hash used in rustc")
     (description
      "This package provides a speedy, non-cryptographic hash used in rustc.")
+    (properties '((hidden? . #t)))
     (license (list license:asl2.0
                    license:expat))))
 
-(define-public rust-rustc-serialize
+(define-public rust-rustc-serialize-0.3
   (package
     (name "rust-rustc-serialize")
     (version "0.3.24")
@@ -3004,14 +2661,11 @@ system calls.")
       (origin
         (method url-fetch)
         (uri (crate-uri "rustc-serialize" version))
-        (file-name (string-append name "-" version ".tar.gz"))
+        (file-name (string-append name "-" version ".crate"))
         (sha256
          (base32
           "1nkg3vasg7nk80ffkazizgiyv3hb1l9g3d8h17cajbkx538jiwfw"))))
     (build-system cargo-build-system)
-    (arguments
-     `(#:cargo-development-inputs
-       (("rust-rand" ,rust-rand-0.3))))
     (home-page "https://github.com/rust-lang-deprecated/rustc-serialize")
     (synopsis "Generic serialization/deserialization support")
     (description
@@ -3019,10 +2673,11 @@ system calls.")
 corresponding to the @code{derive(RustcEncodable, RustcDecodable)} mode in the
 compiler.  Also includes support for hex, base64, and json encoding and
 decoding.")
+    (properties '((hidden? . #t)))
     (license (list license:asl2.0
                    license:expat))))
 
-(define-public rust-rustc-std-workspace-core
+(define-public rust-rustc-std-workspace-core-1.0
   (package
     (name "rust-rustc-std-workspace-core")
     (version "1.0.0")
@@ -3030,7 +2685,7 @@ decoding.")
       (origin
         (method url-fetch)
         (uri (crate-uri "rustc-std-workspace-core" version))
-        (file-name (string-append name "-" version ".tar.gz"))
+        (file-name (string-append name "-" version ".crate"))
         (sha256
          (base32
           "1309xhwyai9xpz128xrfjqkmnkvgjwddznmj7brbd8i8f58zamhr"))))
@@ -3039,10 +2694,11 @@ decoding.")
     (synopsis "Explicitly empty crate for rust-lang/rust integration")
     (description "This crate provides an explicitly empty crate for
 rust-lang/rust integration.")
+    (properties '((hidden? . #t)))
     (license (list license:asl2.0
                    license:expat))))
 
-(define-public rust-safemem
+(define-public rust-safemem-0.3
   (package
     (name "rust-safemem")
     (version "0.3.2")
@@ -3050,7 +2706,7 @@ rust-lang/rust integration.")
       (origin
         (method url-fetch)
         (uri (crate-uri "safemem" version))
-        (file-name (string-append name "-" version ".tar.gz"))
+        (file-name (string-append name "-" version ".crate"))
         (sha256
          (base32
           "1l1ljkm4lpyryrv2ndaxi1f7z1f3v9bwy1rzl9f9mbhx04iq9c6j"))))
@@ -3059,10 +2715,11 @@ rust-lang/rust integration.")
     (synopsis "Safe wrappers for memory-accessing functions")
     (description
      "Safe wrappers for memory-accessing functions, like @code{std::ptr::copy()}.")
+    (properties '((hidden? . #t)))
     (license (list license:asl2.0
                    license:expat))))
 
-(define-public rust-same-file
+(define-public rust-same-file-1.0
   (package
     (name "rust-same-file")
     (version "1.0.5")
@@ -3070,23 +2727,21 @@ rust-lang/rust integration.")
       (origin
         (method url-fetch)
         (uri (crate-uri "same-file" version))
-        (file-name (string-append name "-" version ".tar.gz"))
+        (file-name (string-append name "-" version ".crate"))
         (sha256
          (base32
           "08a4zy10pjindf2rah320s6shgswk13mqw7s61m8i1y1xpf8spjq"))))
     (build-system cargo-build-system)
-    (arguments
-     `(#:cargo-inputs
-      (("rust-winapi-util" ,rust-winapi-util))))
     (home-page "https://github.com/BurntSushi/same-file")
     (synopsis "Determine whether two file paths point to the same file")
     (description
      "This package provides a simple crate for determining whether two file
 paths point to the same file.")
+    (properties '((hidden? . #t)))
     (license (list license:unlicense
                    license:expat))))
 
-(define-public rust-schannel
+(define-public rust-schannel-0.1
   (package
     (name "rust-schannel")
     (version "0.1.15")
@@ -3094,23 +2749,20 @@ paths point to the same file.")
       (origin
         (method url-fetch)
         (uri (crate-uri "schannel" version))
-        (file-name (string-append name "-" version ".tar.gz"))
+        (file-name (string-append name "-" version ".crate"))
         (sha256
          (base32
           "0f9k4pm8yc3z0n1n8hazvnrvg52f0sfxjc91bhf3r76rb3rapxpj"))))
     (build-system cargo-build-system)
-    (arguments
-     `(#:cargo-inputs
-       (("rust-lazy-static" ,rust-lazy-static)
-        ("rust-winapi" ,rust-winapi))))
     (home-page "https://github.com/steffengy/schannel-rs")
     (synopsis "Rust bindings to the Windows SChannel APIs")
     (description
      "Rust bindings to the Windows SChannel APIs providing TLS client and
 server functionality.")
+    (properties '((hidden? . #t)))
     (license license:expat)))
 
-(define-public rust-scoped-threadpool
+(define-public rust-scoped-threadpool-0.1
   (package
     (name "rust-scoped-threadpool")
     (version "0.1.9")
@@ -3118,14 +2770,11 @@ server functionality.")
       (origin
         (method url-fetch)
         (uri (crate-uri "scoped_threadpool" version))
-        (file-name (string-append name "-" version ".tar.gz"))
+        (file-name (string-append name "-" version ".crate"))
         (sha256
          (base32
           "1a26d3lk40s9mrf4imhbik7caahmw2jryhhb6vqv6fplbbgzal8x"))))
     (build-system cargo-build-system)
-    (arguments
-     `(#:cargo-development-inputs
-       (("rust-lazy-static" ,rust-lazy-static))))
     (home-page "https://github.com/Kimundi/scoped-threadpool-rs")
     (synopsis "library for scoped and cached threadpools")
     (description
@@ -3135,10 +2784,11 @@ the underlying threads.  Jobs are runnable by borrowing the pool for a given
 scope, during which an arbitrary number of them can be executed. These jobs can
 access data of any lifetime outside of the pools scope, which allows working on
 non-'static references in parallel.")
+    (properties '((hidden? . #t)))
     (license (list license:asl2.0
                    license:expat))))
 
-(define-public rust-scoped-tls
+(define-public rust-scoped-tls-1.0
   (package
     (name "rust-scoped-tls")
     (version "1.0.0")
@@ -3146,7 +2796,7 @@ non-'static references in parallel.")
       (origin
         (method url-fetch)
         (uri (crate-uri "scoped-tls" version))
-        (file-name (string-append name "-" version ".tar.gz"))
+        (file-name (string-append name "-" version ".crate"))
         (sha256
          (base32
           "1hj8lifzvivdb1z02lfnzkshpvk85nkgzxsy2hc0zky9wf894spa"))))
@@ -3156,24 +2806,25 @@ non-'static references in parallel.")
     (description "This crate provides a library implementation of the standard
 library's old @code{scoped_thread_local!} macro for providing scoped access to
 @dfn{thread local storage} (TLS) so any type can be stored into TLS.")
+    (properties '((hidden? . #t)))
     (license (list license:asl2.0
                    license:expat))))
 
 (define-public rust-scoped-tls-0.1
   (package
-    (inherit rust-scoped-tls)
+    (inherit rust-scoped-tls-1.0)
     (name "rust-scoped-tls")
     (version "0.1.2")
     (source
       (origin
         (method url-fetch)
         (uri (crate-uri "scoped-tls" version))
-        (file-name (string-append name "-" version ".tar.gz"))
+        (file-name (string-append name "-" version ".crate"))
         (sha256
          (base32
           "0a2bn9d2mb07c6l16sadijy4p540g498zddfxyiq4rsqpwrglbrk"))))))
 
-(define-public rust-scopeguard
+(define-public rust-scopeguard-1.0
   (package
     (name "rust-scopeguard")
     (version "1.0.0")
@@ -3181,7 +2832,7 @@ library's old @code{scoped_thread_local!} macro for providing scoped access to
       (origin
         (method url-fetch)
         (uri (crate-uri "scopeguard" version))
-        (file-name (string-append name "-" version ".tar.gz"))
+        (file-name (string-append name "-" version ".crate"))
         (sha256
          (base32
           "03aay84r1f6w87ckbpj6cc4rnsxkxcfs13n5ynxjia0qkgjiabml"))))
@@ -3193,12 +2844,13 @@ given closure when it goes out of scope, even if the code between panics
 (assuming unwinding panic).  Defines the macros @code{defer!},
 @code{defer_on_unwind!}, @code{defer_on_success!} as shorthands for guards
 with one of the implemented strategies.")
+    (properties '((hidden? . #t)))
     (license (list license:asl2.0
                    license:expat))))
 
 (define-public rust-scopeguard-0.3
   (package
-    (inherit rust-scopeguard)
+    (inherit rust-scopeguard-1.0)
     (name "rust-scopeguard")
     (version "0.3.3")
     (source
@@ -3206,12 +2858,12 @@ with one of the implemented strategies.")
         (method url-fetch)
         (uri (crate-uri "scopeguard" version))
         (file-name
-          (string-append name "-" version ".tar.gz"))
+          (string-append name "-" version ".crate"))
         (sha256
          (base32
           "09sy9wbqp409pkwmqni40qmwa99ldqpl48pp95m1xw8sc19qy9cl"))))))
 
-(define-public rust-security-framework-sys
+(define-public rust-security-framework-sys-0.3
   (package
     (name "rust-security-framework-sys")
     (version "0.3.1")
@@ -3219,23 +2871,20 @@ with one of the implemented strategies.")
       (origin
         (method url-fetch)
         (uri (crate-uri "security-framework-sys" version))
-        (file-name (string-append name "-" version ".tar.gz"))
+        (file-name (string-append name "-" version ".crate"))
         (sha256
          (base32
           "0mlsakq9kmqyc0fg2hcbgm6rjk55mb0rhjw2wid3hqdzkjcghdln"))))
     (build-system cargo-build-system)
-    (arguments
-     `(#:cargo-inputs
-       (("rust-core-foundation-sys"
-         ,rust-core-foundation-sys))))
     (home-page "https://lib.rs/crates/security-framework-sys")
     (synopsis "Apple `Security.framework` low-level FFI bindings")
     (description
      "Apple `Security.framework` low-level FFI bindings.")
+    (properties '((hidden? . #t)))
     (license (list license:asl2.0
                    license:expat))))
 
-(define-public rust-semver-parser
+(define-public rust-semver-parser-0.9
   (package
     (name "rust-semver-parser")
     (version "0.9.0")
@@ -3243,7 +2892,7 @@ with one of the implemented strategies.")
       (origin
         (method url-fetch)
         (uri (crate-uri "semver-parser" version))
-        (file-name (string-append name "-" version ".tar.gz"))
+        (file-name (string-append name "-" version ".crate"))
         (sha256
          (base32
           "1ahqhvgpzhcsd28id7xnrjv4419i9yyalhm7d7zi430qx0hi2vml"))))
@@ -3251,24 +2900,25 @@ with one of the implemented strategies.")
     (home-page "https://github.com/steveklabnik/semver-parser")
     (synopsis "Parsing of the semver spec")
     (description "This package provides for parsing of the semver spec.")
+    (properties '((hidden? . #t)))
     (license (list license:asl2.0
                    license:expat))))
 
 (define-public rust-semver-parser-0.7
   (package
-    (inherit rust-semver-parser)
+    (inherit rust-semver-parser-0.9)
     (name "rust-semver-parser")
     (version "0.7.0")
     (source
       (origin
         (method url-fetch)
         (uri (crate-uri "semver-parser" version))
-        (file-name (string-append name "-" version ".tar.gz"))
+        (file-name (string-append name "-" version ".crate"))
         (sha256
          (base32
           "18vhypw6zgccnrlm5ps1pwa0khz7ry927iznpr88b87cagr1v2iq"))))))
 
-(define-public rust-shlex
+(define-public rust-shlex-0.1
   (package
     (name "rust-shlex")
     (version "0.1.1")
@@ -3276,7 +2926,7 @@ with one of the implemented strategies.")
       (origin
         (method url-fetch)
         (uri (crate-uri "shlex" version))
-        (file-name (string-append name "-" version ".tar.gz"))
+        (file-name (string-append name "-" version ".crate"))
         (sha256
          (base32
           "1lmv6san7g8dv6jdfp14m7bdczq9ss7j7bgsfqyqjc3jnjfippvz"))))
@@ -3285,10 +2935,11 @@ with one of the implemented strategies.")
     (synopsis "Split a string into shell words, like Python's shlex")
     (description "This crate provides a method to split a string into shell
 words, like Python's shlex.")
+    (properties '((hidden? . #t)))
     (license (list license:asl2.0
                    license:expat))))
 
-(define-public rust-slab
+(define-public rust-slab-0.4
   (package
     (name "rust-slab")
     (version "0.4.2")
@@ -3296,7 +2947,7 @@ words, like Python's shlex.")
       (origin
         (method url-fetch)
         (uri (crate-uri "slab" version))
-        (file-name (string-append name "-" version ".tar.gz"))
+        (file-name (string-append name "-" version ".crate"))
         (sha256
          (base32
           "1y59xsa27jk84sxzswjk60xcjf8b4fm5960jwpznrrcmasyva4f1"))))
@@ -3305,9 +2956,10 @@ words, like Python's shlex.")
     (synopsis "Pre-allocated storage for a uniform data type")
     (description "This create provides a pre-allocated storage for a uniform
 data type.")
+    (properties '((hidden? . #t)))
     (license license:expat)))
 
-(define-public rust-socket2
+(define-public rust-socket2-0.3
   (package
     (name "rust-socket2")
     (version "0.3.11")
@@ -3315,29 +2967,21 @@ data type.")
       (origin
         (method url-fetch)
         (uri (crate-uri "socket2" version))
-        (file-name (string-append name "-" version ".tar.gz"))
+        (file-name (string-append name "-" version ".crate"))
         (sha256
          (base32
           "11bdcz04i106g4q7swkll0qxrb4287srqd2k3aq2q6i22zjlvdz8"))))
     (build-system cargo-build-system)
-    (arguments
-     `(#:cargo-inputs
-       (("rust-cfg-if" ,rust-cfg-if)
-        ("rust-libc" ,rust-libc)
-        ("rust-redox-syscall" ,rust-redox-syscall)
-        ("rust-winapi" ,rust-winapi))
-       #:cargo-development-inputs
-       (("rust-tempdir" ,rust-tempdir))
-       #:tests? #f)) ; Tests expect network connectivity.
     (home-page "https://github.com/alexcrichton/socket2-rs")
     (synopsis "Networking sockets in Rust")
     (description
      "This package provides utilities for handling networking sockets with a
 maximal amount of configuration possible intended.")
+    (properties '((hidden? . #t)))
     (license (list license:asl2.0
                    license:expat))))
 
-(define-public rust-sourcefile
+(define-public rust-sourcefile-0.1
   (package
     (name "rust-sourcefile")
     (version "0.1.4")
@@ -3345,23 +2989,21 @@ maximal amount of configuration possible intended.")
       (origin
         (method url-fetch)
         (uri (crate-uri "sourcefile" version))
-        (file-name (string-append name "-" version ".tar.gz"))
+        (file-name (string-append name "-" version ".crate"))
         (sha256
          (base32
           "1lwa6973zs4bgj29my7agfjgk4nw9hp6j7dfnr13nid85fw7rxsb"))))
     (build-system cargo-build-system)
-    (arguments
-     `(#:cargo-development-inputs
-       (("rust-tempfile" ,rust-tempfile))))
     (home-page "https://github.com/derekdreery/sourcefile-rs")
     (synopsis "Concatenate source from multiple files")
     (description
      "A library for concatenating source from multiple files, whilst keeping
 track of where each new file and line starts.")
+    (properties '((hidden? . #t)))
     (license (list license:asl2.0
                    license:expat))))
 
-(define-public rust-spin
+(define-public rust-spin-0.5
   (package
     (name "rust-spin")
     (version "0.5.0")
@@ -3369,7 +3011,7 @@ track of where each new file and line starts.")
       (origin
         (method url-fetch)
         (uri (crate-uri "spin" version))
-        (file-name (string-append name "-" version ".tar.gz"))
+        (file-name (string-append name "-" version ".crate"))
         (sha256
          (base32
           "0m9clchsj0rf13bggsgvbv9haiy0f6rhvnvkpvkk8720a5pkydj4"))))
@@ -3379,9 +3021,10 @@ track of where each new file and line starts.")
     (description "This crate provides synchronization primitives based on
 spinning.  They may contain data, are usable without @code{std},and static
 initializers are available.")
+    (properties '((hidden? . #t)))
     (license license:expat)))
 
-(define-public rust-stable-deref-trait
+(define-public rust-stable-deref-trait-1.1
   (package
     (name "rust-stable-deref-trait")
     (version "1.1.1")
@@ -3389,7 +3032,7 @@ initializers are available.")
       (origin
         (method url-fetch)
         (uri (crate-uri "stable_deref_trait" version))
-        (file-name (string-append name "-" version ".tar.gz"))
+        (file-name (string-append name "-" version ".crate"))
         (sha256
          (base32
           "1j2lkgakksmz4vc5hfawcch2ipiskrhjs1sih0f3br7s7rys58fv"))))
@@ -3402,10 +3045,11 @@ types which deref to a fixed address which is valid even when the containing
 type is moved.  For example, Box, Vec, Rc, Arc and String implement this trait.
 Additionally, it defines CloneStableDeref for types like Rc where clones deref
 to the same address.")
+    (properties '((hidden? . #t)))
     (license (list license:asl2.0
                    license:expat))))
 
-(define-public rust-stacker
+(define-public rust-stacker-0.1
   (package
     (name "rust-stacker")
     (version "0.1.5")
@@ -3413,26 +3057,21 @@ to the same address.")
       (origin
         (method url-fetch)
         (uri (crate-uri "stacker" version))
-        (file-name (string-append name "-" version ".tar.gz"))
+        (file-name (string-append name "-" version ".crate"))
         (sha256
          (base32
           "0js0axz5nla1mkr2dm2vrv9rj964ng1lrv4l43sqlnfgawplhygv"))))
     (build-system cargo-build-system)
-    (arguments
-     `(#:cargo-inputs
-       (("rust-cfg-if" ,rust-cfg-if)
-        ("rust-libc" ,rust-libc)
-        ("rust-winapi" ,rust-winapi)
-        ("rust-cc" ,rust-cc))))
     (home-page "https://github.com/rust-lang/stacker")
     (synopsis "Manual segmented stacks for Rust")
     (description
      "This package provides a stack growth library useful when implementing
 deeply recursive algorithms that may accidentally blow the stack.")
+    (properties '((hidden? . #t)))
     (license (list license:asl2.0
                    license:expat))))
 
-(define-public rust-static-assertions
+(define-public rust-static-assertions-0.3
   (package
     (name "rust-static-assertions")
     (version "0.3.4")
@@ -3440,7 +3079,7 @@ deeply recursive algorithms that may accidentally blow the stack.")
       (origin
         (method url-fetch)
         (uri (crate-uri "static-assertions" version))
-        (file-name (string-append name "-" version ".tar.gz"))
+        (file-name (string-append name "-" version ".crate"))
         (sha256
          (base32
           "1lw33i89888yb3x29c6dv4mrkg3534n0rlg3r7qzh4p58xmv6gkz"))))
@@ -3450,9 +3089,10 @@ deeply recursive algorithms that may accidentally blow the stack.")
     (description
      "This package provides compile-time assertions to ensure that invariants
 are met.")
+    (properties '((hidden? . #t)))
     (license (list license:expat license:asl2.0))))
 
-(define-public rust-stdweb-internal-runtime
+(define-public rust-stdweb-internal-runtime-0.1
   (package
     (name "rust-stdweb-internal-runtime")
     (version "0.1.4")
@@ -3460,7 +3100,7 @@ are met.")
       (origin
         (method url-fetch)
         (uri (crate-uri "stdweb-internal-runtime" version))
-        (file-name (string-append name "-" version ".tar.gz"))
+        (file-name (string-append name "-" version ".crate"))
         (sha256
          (base32
           "1nhpyra7glbwcpakhpj5a3d7h7kx1ynif473nzshmk226m91f8ym"))))
@@ -3469,10 +3109,11 @@ are met.")
     (synopsis "Internal runtime for the @code{stdweb} crate")
     (description "This crate provides internal runtime for the @code{stdweb}
 crate.")
+    (properties '((hidden? . #t)))
     (license (list license:asl2.0
                    license:expat))))
 
-(define-public rust-stdweb-internal-test-macro
+(define-public rust-stdweb-internal-test-macro-0.1
   (package
     (name "rust-stdweb-internal-test-macro")
     (version "0.1.0")
@@ -3480,23 +3121,20 @@ crate.")
       (origin
         (method url-fetch)
         (uri (crate-uri "stdweb-internal-test-macro" version))
-        (file-name (string-append name "-" version ".tar.gz"))
+        (file-name (string-append name "-" version ".crate"))
         (sha256
          (base32
           "12rrm7p77xnm3xacgn3rgniiyyjb4gq7902wpbljsvbx045z69l2"))))
     (build-system cargo-build-system)
-    (arguments
-     `(#:cargo-inputs
-       (("rust-proc-macro2" ,rust-proc-macro2)
-        ("rust-quote" ,rust-quote))))
     (home-page "https://github.com/koute/stdweb")
     (synopsis "Internal crate of the `stdweb` crate")
     (description
      "Internal crate of the @code{stdweb} crate.")
+    (properties '((hidden? . #t)))
     (license (list license:asl2.0
                    license:expat))))
 
-(define-public rust-streaming-stats
+(define-public rust-streaming-stats-0.2
   (package
     (name "rust-streaming-stats")
     (version "0.2.2")
@@ -3504,22 +3142,20 @@ crate.")
       (origin
         (method url-fetch)
         (uri (crate-uri "streaming-stats" version))
-        (file-name (string-append name "-" version ".tar.gz"))
+        (file-name (string-append name "-" version ".crate"))
         (sha256
          (base32
           "0l7xz4g6709s80zqpvlhrg0qhgz64r94cwhmfsg8xhabgznbp2px"))))
     (build-system cargo-build-system)
-    (arguments
-     `(#:cargo-inputs
-       (("rust-num-traits" ,rust-num-traits))))
     (home-page "https://github.com/BurntSushi/rust-stats")
     (synopsis "Compute basic statistics on streams")
     (description
      "Experimental crate for computing basic statistics on streams.")
+    (properties '((hidden? . #t)))
     (license (list license:unlicense
                    license:expat))))
 
-(define-public rust-strsim
+(define-public rust-strsim-0.9
   (package
     (name "rust-strsim")
     (version "0.9.2")
@@ -3527,7 +3163,7 @@ crate.")
       (origin
         (method url-fetch)
         (uri (crate-uri "strsim" version))
-        (file-name (string-append name "-" version ".tar.gz"))
+        (file-name (string-append name "-" version ".crate"))
         (sha256
          (base32
           "1xphwhf86yxxmcpvm4mikj8ls41f6nf7gqyjm98b74mfk81h6b03"))))
@@ -3537,23 +3173,24 @@ crate.")
     (description "This crate includes implementations of string similarity
 metrics.  It includes Hamming, Levenshtein, OSA, Damerau-Levenshtein, Jaro,
 and Jaro-Winkler.")
+    (properties '((hidden? . #t)))
     (license license:expat)))
 
 (define-public rust-strsim-0.8
   (package
-    (inherit rust-strsim)
+    (inherit rust-strsim-0.9)
     (name "rust-strsim")
     (version "0.8.0")
     (source
       (origin
         (method url-fetch)
         (uri (crate-uri "strsim" version))
-        (file-name (string-append name "-" version ".tar.gz"))
+        (file-name (string-append name "-" version ".crate"))
         (sha256
          (base32
           "0sjsm7hrvjdifz661pjxq5w4hf190hx53fra8dfvamacvff139cf"))))))
 
-(define-public rust-synstructure-test-traits
+(define-public rust-synstructure-test-traits-0.1
   (package
     (name "rust-synstructure-test-traits")
     (version "0.1.0")
@@ -3561,7 +3198,7 @@ and Jaro-Winkler.")
       (origin
         (method url-fetch)
         (uri (crate-uri "synstructure_test_traits" version))
-        (file-name (string-append name "-" version ".tar.gz"))
+        (file-name (string-append name "-" version ".crate"))
         (sha256
          (base32
           "1b3fs2b9kc1gy9dilaxqjbdl4z0mlrbbxjzkprdx953rif1c3q66"))))
@@ -3570,9 +3207,10 @@ and Jaro-Winkler.")
     (synopsis "Helper test traits for synstructure doctests")
     (description
      "This package provides helper test traits for synstructure doctests.")
+    (properties '((hidden? . #t)))
     (license license:expat)))
 
-(define-public rust-tar
+(define-public rust-tar-0.4
   (package
     (name "rust-tar")
     (version "0.4.26")
@@ -3580,20 +3218,11 @@ and Jaro-Winkler.")
       (origin
         (method url-fetch)
         (uri (crate-uri "tar" version))
-        (file-name (string-append name "-" version ".tar.gz"))
+        (file-name (string-append name "-" version ".crate"))
         (sha256
          (base32
           "1lr6v3cpkfxd2lk5ll2jd8wr1xdskwj35smnh5sfb8xvzzxnn6dk"))))
     (build-system cargo-build-system)
-    (arguments
-     `(#:cargo-inputs
-       (("rust-filetime" ,rust-filetime)
-        ("rust-libc" ,rust-libc)
-        ("rust-redox-syscall" ,rust-redox-syscall)
-        ("rust-xattr" ,rust-xattr))
-       #:cargo-development-inputs
-       (("rust-tempdir" ,rust-tempdir))
-       #:tests? #f)) ; Test archives are not distributed in the crate tarball.
     (home-page "https://github.com/alexcrichton/tar-rs")
     (synopsis "Tar file reading/writing for Rust")
     (description
@@ -3602,10 +3231,11 @@ writer.  This library does not currently handle compression, but it is abstract
 over all I/O readers and writers.  Additionally, great lengths are taken to
 ensure that the entire contents are never required to be entirely resident in
 memory all at once.")
+    (properties '((hidden? . #t)))
     (license (list license:asl2.0
                    license:expat))))
 
-(define-public rust-tempdir
+(define-public rust-tempdir-0.3
   (package
     (name "rust-tempdir")
     (version "0.3.7")
@@ -3613,24 +3243,21 @@ memory all at once.")
       (origin
         (method url-fetch)
         (uri (crate-uri "tempdir" version))
-        (file-name (string-append name "-" version ".tar.gz"))
+        (file-name (string-append name "-" version ".crate"))
         (sha256
          (base32
           "1n5n86zxpgd85y0mswrp5cfdisizq2rv3la906g6ipyc03xvbwhm"))))
     (build-system cargo-build-system)
-    (arguments
-     `(#:cargo-inputs
-       (("rust-rand" ,rust-rand)
-        ("rust-remove-dir-all" ,rust-remove-dir-all))))
     (home-page "https://github.com/rust-lang-deprecated/tempdir")
     (synopsis "Temporary directory management for Rust")
     (description
      "This package provides a library for managing a temporary directory and
 deleting all contents when it's dropped.")
+    (properties '((hidden? . #t)))
     (license (list license:asl2.0
                    license:expat))))
 
-(define-public rust-tempfile
+(define-public rust-tempfile-3.0
   (package
     (name "rust-tempfile")
     (version "3.0.2")
@@ -3638,27 +3265,21 @@ deleting all contents when it's dropped.")
       (origin
         (method url-fetch)
         (uri (crate-uri "tempfile" version))
-        (file-name (string-append name "-" version ".tar.gz"))
+        (file-name (string-append name "-" version ".crate"))
         (sha256
          (base32
           "0ny1cdbcsrmwjpy4k9366xm6p0jqkrmrvr0cln2djxspp1inyxs7"))))
     (build-system cargo-build-system)
-    (arguments
-     `(#:cargo-inputs
-       (("rust-libc" ,rust-libc)
-        ("rust-rand" ,rust-rand)
-        ("rust-redox-syscall" ,rust-redox-syscall)
-        ("rust-remove-dir-all" ,rust-remove-dir-all)
-        ("rust-winapi" ,rust-winapi))))
     (home-page "http://stebalien.com/projects/tempfile-rs")
     (synopsis "Library for managing temporary files and directories")
     (description
      "This package provides a library for managing temporary files and
 directories.")
+    (properties '((hidden? . #t)))
     (license (list license:asl2.0
                    license:expat))))
 
-(define-public rust-term
+(define-public rust-term-0.4
   (package
     (name "rust-term")
     (version "0.4.6")
@@ -3666,23 +3287,20 @@ directories.")
       (origin
         (method url-fetch)
         (uri (crate-uri "term" version))
-        (file-name (string-append name "-" version ".tar.gz"))
+        (file-name (string-append name "-" version ".crate"))
         (sha256
          (base32
           "1wbh8ngqkqr3f6wz902yplf60bd5yapnckvrkgmzp5nffi7n8qzs"))))
     (build-system cargo-build-system)
-    (arguments
-     `(#:cargo-inputs
-       (("rust-kernel32-sys" ,rust-kernel32-sys)
-        ("rust-winapi" ,rust-winapi))))
     (home-page "https://github.com/Stebalien/term")
     (synopsis "Terminal formatting library")
     (description
      "This package provides a terminal formatting library in rust.")
+    (properties '((hidden? . #t)))
     (license (list license:asl2.0
                    license:expat))))
 
-(define-public rust-termcolor
+(define-public rust-termcolor-1.0
   (package
     (name "rust-termcolor")
     (version "1.0.5")
@@ -3690,22 +3308,20 @@ directories.")
       (origin
         (method url-fetch)
         (uri (crate-uri "termcolor" version))
-        (file-name (string-append name "-" version ".tar.gz"))
+        (file-name (string-append name "-" version ".crate"))
         (sha256
          (base32
           "0vjfsn1a8zvqhnrbygrz1id6yckwv1dncw3w4zj65qdx0f00kmln"))))
     (build-system cargo-build-system)
-    (arguments
-     `(#:cargo-inputs
-       (("rust-wincolor" ,rust-wincolor))))
     (home-page "https://github.com/BurntSushi/termcolor")
     (synopsis "Library for writing colored text to a terminal")
     (description "This package provides a simple cross platform library for
 writing colored text to a terminal.")
+    (properties '((hidden? . #t)))
     (license (list license:unlicense
                    license:expat))))
 
-(define-public rust-termios
+(define-public rust-termios-0.3
   (package
     (name "rust-termios")
     (version "0.3.1")
@@ -3713,13 +3329,11 @@ writing colored text to a terminal.")
       (origin
         (method url-fetch)
         (uri (crate-uri "termios" version))
-        (file-name (string-append name "-" version ".tar.gz"))
+        (file-name (string-append name "-" version ".crate"))
         (sha256
          (base32
           "09any1p4jp4bphvb5ikagnvwjc3xn2djchy96nkpa782xb2j1dkj"))))
     (build-system cargo-build-system)
-    (arguments
-     `(#:cargo-inputs (("rust-libc" ,rust-libc))))
     (home-page  "https://github.com/dcuddeback/termios-rs")
     (synopsis "Safe bindings for the termios library")
     (description
@@ -3727,9 +3341,10 @@ writing colored text to a terminal.")
 to the terminal I/O interface implemented by Unix operating systems.  The safe
 bindings are a small wrapper around the raw C functions, which converts integer
 return values to @code{std::io::Result} to indicate success or failure.")
+    (properties '((hidden? . #t)))
     (license license:expat)))
 
-(define-public rust-thread-id
+(define-public rust-thread-id-3.3
   (package
     (name "rust-thread-id")
     (version "3.3.0")
@@ -3737,25 +3352,21 @@ return values to @code{std::io::Result} to indicate success or failure.")
       (origin
         (method url-fetch)
         (uri (crate-uri "thread-id" version))
-        (file-name (string-append name "-" version ".tar.gz"))
+        (file-name (string-append name "-" version ".crate"))
         (sha256
          (base32
           "1h90v19fjz3x9b25ywh68z5yf2zsmm6h5zb4rl302ckbsp4z9yy7"))))
     (build-system cargo-build-system)
-    (arguments
-     `(#:cargo-inputs
-       (("rust-libc" ,rust-libc)
-        ("rust-redox-syscall" ,rust-redox-syscall)
-        ("rust-winapi" ,rust-winapi))))
     (home-page "https://github.com/ruuda/thread-id")
     (synopsis "Get a unique ID for the current thread in Rust")
     (description
      "For diagnostics and debugging it can often be useful to get an ID that is
 different for every thread.")
+    (properties '((hidden? . #t)))
     (license (list license:asl2.0
                    license:expat))))
 
-(define-public rust-thread-local
+(define-public rust-thread-local-0.3
   (package
     (name "rust-thread-local")
     (version "0.3.6")
@@ -3763,21 +3374,19 @@ different for every thread.")
       (origin
         (method url-fetch)
         (uri (crate-uri "thread_local" version))
-        (file-name (string-append name "-" version ".tar.gz"))
+        (file-name (string-append name "-" version ".crate"))
         (sha256
          (base32
           "06rzik99p8c5js8238yhc8rk6np543ylb1dy9nrw5v80j0r3xdf6"))))
     (build-system cargo-build-system)
-    (arguments
-     `(#:cargo-inputs
-      (("rust-lazy-static" ,rust-lazy-static))))
     (home-page "https://github.com/Amanieu/thread_local-rs")
     (synopsis "Per-object thread-local storage")
     (description "Per-object thread-local storage")
+    (properties '((hidden? . #t)))
     (license (list license:asl2.0
                    license:expat))))
 
-(define-public rust-threadpool
+(define-public rust-threadpool-1.7
   (package
     (name "rust-threadpool")
     (version "1.7.1")
@@ -3785,23 +3394,21 @@ different for every thread.")
       (origin
         (method url-fetch)
         (uri (crate-uri "threadpool" version))
-        (file-name (string-append name "-" version ".tar.gz"))
+        (file-name (string-append name "-" version ".crate"))
         (sha256
          (base32
           "0rd89n1q7vy47w4c32cnynibffv9kj3jy3dwr0536n9lbw5ckw72"))))
     (build-system cargo-build-system)
-    (arguments
-     `(#:cargo-inputs
-       (("rust-num-cpus" ,rust-num-cpus))))
     (home-page "https://github.com/rust-threadpool/rust-threadpool")
     (synopsis "Thread pool for running jobs on a fixed set of worker threads")
     (description
      "This package provides a thread pool for running a number of jobs on a
 fixed set of worker threads.")
+    (properties '((hidden? . #t)))
     (license (list license:asl2.0
                    license:expat))))
 
-(define-public rust-time
+(define-public rust-time-0.1
   (package
     (name "rust-time")
     (version "0.1.39")
@@ -3809,30 +3416,21 @@ fixed set of worker threads.")
       (origin
         (method url-fetch)
         (uri (crate-uri "time" version))
-        (file-name (string-append name "-" version ".tar.gz"))
+        (file-name (string-append name "-" version ".crate"))
         (sha256
          (base32
           "161hqx0gw722ikydanpahky447vaxqncwmkj66rny282vzqpalx1"))))
     (build-system cargo-build-system)
-    (arguments
-     `(#:cargo-inputs
-       (("rust-libc" ,rust-libc)
-        ("rust-redox-syscall" ,rust-redox-syscall)
-        ("rust-rustc-serialize" ,rust-rustc-serialize)
-        ("rust-winapi" ,rust-winapi))
-       #:cargo-development-inputs
-       (("rust-log" ,rust-log)
-        ("rust-winapi" ,rust-winapi))
-       #:tests? #f)) ; Tests have difficulty with the timezones.
     (home-page "https://github.com/rust-lang-deprecated/time")
     (synopsis "Simple time handling in Rust")
     (description
      "This package provides utilities for working with time-related functions
 in Rust.")
+    (properties '((hidden? . #t)))
     (license (list license:asl2.0
                    license:expat))))
 
-(define-public rust-tokio-mock-task
+(define-public rust-tokio-mock-task-0.1
   (package
     (name "rust-tokio-mock-task")
     (version "0.1.1")
@@ -3840,19 +3438,18 @@ in Rust.")
       (origin
         (method url-fetch)
         (uri (crate-uri "tokio-mock-task" version))
-        (file-name (string-append name "-" version ".tar.gz"))
+        (file-name (string-append name "-" version ".crate"))
         (sha256
          (base32
           "1y7q83qfk9ljjfvs82b453pmz9x1v3d6kr4x55j8mal01s6790dw"))))
     (build-system cargo-build-system)
-    (arguments
-     `(#:cargo-inputs (("rust-futures" ,rust-futures))))
     (home-page  "https://github.com/carllerche/tokio-mock-task")
     (synopsis "Mock a Tokio task")
     (description "Mock a Tokio task")
+    (properties '((hidden? . #t)))
     (license license:expat)))
 
-(define-public rust-tracing-core
+(define-public rust-tracing-core-0.1
   (package
     (name "rust-tracing-core")
     (version "0.1.2")
@@ -3860,22 +3457,20 @@ in Rust.")
       (origin
         (method url-fetch)
         (uri (crate-uri "tracing-core" version))
-        (file-name (string-append name "-" version ".tar.gz"))
+        (file-name (string-append name "-" version ".crate"))
         (sha256
          (base32
           "01fa73wzw2m5ybi3kkd52dgrw97mgc3i6inmhwys46ab28giwnxi"))))
     (build-system cargo-build-system)
-    (arguments
-     `(#:cargo-inputs
-       (("rust-lazy-static" ,rust-lazy-static))))
     (home-page "https://tokio.rs")
     (synopsis "Core primitives for application-level tracing")
     (description
      "Core primitives for application-level tracing.")
+    (properties '((hidden? . #t)))
     (license (list license:asl2.0
                    license:expat))))
 
-(define-public rust-traitobject
+(define-public rust-traitobject-0.1
   (package
     (name "rust-traitobject")
     (version "0.1.0")
@@ -3883,7 +3478,7 @@ in Rust.")
       (origin
         (method url-fetch)
         (uri (crate-uri "traitobject" version))
-        (file-name (string-append name "-" version ".tar.gz"))
+        (file-name (string-append name "-" version ".crate"))
         (sha256
          (base32
           "0yb0n8822mr59j200fyr2fxgzzgqljyxflx9y8bdy3rlaqngilgg"))))
@@ -3891,10 +3486,11 @@ in Rust.")
     (home-page "https://github.com/reem/rust-traitobject")
     (synopsis "Unsafe helpers for dealing with raw trait objects")
     (description "Unsafe helpers for dealing with raw trait objects.")
+    (properties '((hidden? . #t)))
     (license (list license:asl2.0
                    license:expat))))
 
-(define-public rust-try-from
+(define-public rust-try-from-0.3
   (package
     (name "rust-try-from")
     (version "0.3.2")
@@ -3902,21 +3498,19 @@ in Rust.")
       (origin
         (method url-fetch)
         (uri (crate-uri "try_from" version))
-        (file-name (string-append name "-" version ".tar.gz"))
+        (file-name (string-append name "-" version ".crate"))
         (sha256
          (base32
           "12wdd4ja7047sd3rx70hv2056hyc8gcdllcx3a41g1rnw64kng98"))))
     (build-system cargo-build-system)
-    (arguments
-     `(#:cargo-inputs
-      (("rust-cfg-if" ,rust-cfg-if))))
     (home-page "https://github.com/derekjw/try_from")
     (synopsis "TryFrom and TryInto traits for failable conversions")
     (description
       "TryFrom and TryInto traits for failable conversions that return a Result.")
+    (properties '((hidden? . #t)))
     (license license:expat)))
 
-(define-public rust-try-lock
+(define-public rust-try-lock-0.2
   (package
     (name "rust-try-lock")
     (version "0.2.2")
@@ -3924,7 +3518,7 @@ in Rust.")
       (origin
         (method url-fetch)
         (uri (crate-uri "try-lock" version))
-        (file-name (string-append name "-" version ".tar.gz"))
+        (file-name (string-append name "-" version ".crate"))
         (sha256
          (base32
           "10p36rx6pqi9d0zr876xa8vksx2m66ha45myakl50rn08dxyn176"))))
@@ -3933,9 +3527,10 @@ in Rust.")
     (synopsis "Lightweight atomic lock")
     (description
      "This package provides a lightweight atomic lock.")
+    (properties '((hidden? . #t)))
     (license license:expat)))
 
-(define-public rust-typeable
+(define-public rust-typeable-0.1
   (package
     (name "rust-typeable")
     (version "0.1.2")
@@ -3943,7 +3538,7 @@ in Rust.")
       (origin
         (method url-fetch)
         (uri (crate-uri "typeable" version))
-        (file-name (string-append name "-" version ".tar.gz"))
+        (file-name (string-append name "-" version ".crate"))
         (sha256
          (base32
           "11w8dywgnm32hb291izjvh4zjd037ccnkk77ahk63l913zwzc40l"))))
@@ -3951,9 +3546,10 @@ in Rust.")
     (home-page "https://github.com/reem/rust-typeable")
     (synopsis "Exposes Typeable, for getting TypeIds at runtime")
     (description "Exposes Typeable, for getting TypeIds at runtime.")
+    (properties '((hidden? . #t)))
     (license license:expat)))
 
-(define-public rust-typemap
+(define-public rust-typemap-0.3
   (package
     (name "rust-typemap")
     (version "0.3.3")
@@ -3961,21 +3557,19 @@ in Rust.")
       (origin
         (method url-fetch)
         (uri (crate-uri "typemap" version))
-        (file-name (string-append name "-" version ".tar.gz"))
+        (file-name (string-append name "-" version ".crate"))
         (sha256
          (base32
           "1xm1gbvz9qisj1l6d36hrl9pw8imr8ngs6qyanjnsad3h0yfcfv5"))))
     (build-system cargo-build-system)
-    (arguments
-     `(#:cargo-inputs
-       (("rust-unsafe-any" ,rust-unsafe-any))))
     (home-page "https://github.com/reem/rust-typemap")
     (synopsis "Typesafe store for many value types")
     (description
      "A typesafe store for many value types.")
+    (properties '((hidden? . #t)))
     (license license:expat)))
 
-(define-public rust-typenum
+(define-public rust-typenum-1.10
   (package
     (name "rust-typenum")
     (version "1.10.0")
@@ -3983,7 +3577,7 @@ in Rust.")
       (origin
         (method url-fetch)
         (uri (crate-uri "typenum" version))
-        (file-name (string-append name "-" version ".tar.gz"))
+        (file-name (string-append name "-" version ".crate"))
         (sha256
          (base32
           "0sc1jirllfhdi52z1xv9yqzxzpk6v7vadd13n7wvs1wnjipn6bb1"))))
@@ -3994,10 +3588,11 @@ in Rust.")
 compile time.  It currently supports bits, unsigned integers, and signed
 integers.  It also provides a type-level array of type-level numbers, but its
 implementation is incomplete.")
+    (properties '((hidden? . #t)))
     (license (list license:asl2.0
                    license:expat))))
 
-(define-public rust-ucd-trie
+(define-public rust-ucd-trie-0.1
   (package
     (name "rust-ucd-trie")
     (version "0.1.2")
@@ -4005,22 +3600,20 @@ implementation is incomplete.")
       (origin
         (method url-fetch)
         (uri (crate-uri "ucd-trie" version))
-        (file-name (string-append name "-" version ".tar.gz"))
+        (file-name (string-append name "-" version ".crate"))
         (sha256
          (base32
           "1hh6kyzh5xygwy96wfmsf8v8czlzhps2lgbcyhj1xzy1w1xys04g"))))
     (build-system cargo-build-system)
-    (arguments
-     `(#:cargo-development-inputs
-      (("rust-lazy-static" ,rust-lazy-static))))
     (home-page "https://github.com/BurntSushi/ucd-generate")
     (synopsis "Trie for storing Unicode codepoint sets and maps")
     (description
      "This package provides a trie for storing Unicode codepoint sets and maps.")
+    (properties '((hidden? . #t)))
     (license (list license:asl2.0
                    license:expat))))
 
-(define-public rust-ucd-util
+(define-public rust-ucd-util-0.1
   (package
     (name "rust-ucd-util")
     (version "0.1.5")
@@ -4028,7 +3621,7 @@ implementation is incomplete.")
       (origin
         (method url-fetch)
         (uri (crate-uri "ucd-util" version))
-        (file-name (string-append name "-" version ".tar.gz"))
+        (file-name (string-append name "-" version ".crate"))
         (sha256
          (base32
           "0x088q5z0m09a2jqcfgsnq955y8syn1mgn35cl78qinkxm4kp6zs"))))
@@ -4037,10 +3630,11 @@ implementation is incomplete.")
     (synopsis "library for working with the Unicode character database")
     (description "This package provides a small utility library for working
 with the Unicode character database.")
+    (properties '((hidden? . #t)))
     (license (list license:asl2.0
                    license:expat))))
 
-(define-public rust-unicase
+(define-public rust-unicase-2.4
   (package
     (name "rust-unicase")
     (version "2.4.0")
@@ -4048,21 +3642,20 @@ with the Unicode character database.")
       (origin
         (method url-fetch)
         (uri (crate-uri "unicase" version))
-        (file-name (string-append name "-" version ".tar.gz"))
+        (file-name (string-append name "-" version ".crate"))
         (sha256
          (base32
           "1xmpmkakhhblq7dzab1kwyv925kv7fqjkjsxjspg6ix9n88makm8"))))
     (build-system cargo-build-system)
-    (arguments
-     `(#:cargo-inputs (("rust-version-check" ,rust-version-check-0.1))))
     (home-page "https://github.com/seanmonstar/unicase")
     (synopsis "Case-insensitive wrapper around strings")
     (description
      "A case-insensitive wrapper around strings.")
+    (properties '((hidden? . #t)))
     (license (list license:asl2.0
                    license:expat))))
 
-(define-public rust-unicode-width
+(define-public rust-unicode-width-0.1
   (package
     (name "rust-unicode-width")
     (version "0.1.5")
@@ -4070,7 +3663,7 @@ with the Unicode character database.")
       (origin
         (method url-fetch)
         (uri (crate-uri "unicode-width" version))
-        (file-name (string-append name "-" version ".tar.gz"))
+        (file-name (string-append name "-" version ".crate"))
         (sha256
          (base32
           "09k5lipygardwy0660jhls08fsgknrazzivmn804gps53hiqc8w8"))))
@@ -4079,10 +3672,11 @@ with the Unicode character database.")
     (synopsis "Determine displayed width according to Unicode rules")
     (description "This crate allows you to determine displayed width of
 @code{char} and @code{str} types according to Unicode Standard Annex #11 rules.")
+    (properties '((hidden? . #t)))
     (license (list license:asl2.0
                    license:expat))))
 
-(define-public rust-unicode-xid
+(define-public rust-unicode-xid-0.2
   (package
     (name "rust-unicode-xid")
     (version "0.2.0")
@@ -4091,7 +3685,7 @@ with the Unicode character database.")
         (method url-fetch)
         (uri (crate-uri "unicode-xid" version))
         (file-name
-          (string-append name "-" version ".tar.gz"))
+          (string-append name "-" version ".crate"))
         (sha256
          (base32
           "0z09fn515xm7zyr0mmdyxa9mx2f7azcpv74pqmg611iralwpcvl2"))))
@@ -4101,24 +3695,25 @@ with the Unicode character database.")
     (synopsis "Determine Unicode XID related properties")
     (description "Determine whether characters have the XID_Start
 or XID_Continue properties according to Unicode Standard Annex #31.")
+    (properties '((hidden? . #t)))
     ;; Dual licensed.
     (license (list license:asl2.0 license:expat))))
 
 (define-public rust-unicode-xid-0.1
   (package
-    (inherit rust-unicode-xid)
+    (inherit rust-unicode-xid-0.2)
     (name "rust-unicode-xid")
     (version "0.1.0")
     (source
       (origin
         (method url-fetch)
         (uri (crate-uri "unicode-xid" version))
-        (file-name (string-append name "-" version ".tar.gz"))
+        (file-name (string-append name "-" version ".crate"))
         (sha256
          (base32
           "1z57lqh4s18rr4x0j4fw4fmp9hf9346h0kmdgqsqx0fhjr3k0wpw"))))))
 
-(define-public rust-unindent
+(define-public rust-unindent-0.1
   (package
     (name "rust-unindent")
     (version "0.1.5")
@@ -4126,7 +3721,7 @@ or XID_Continue properties according to Unicode Standard Annex #31.")
       (origin
         (method url-fetch)
         (uri (crate-uri "unindent" version))
-        (file-name (string-append name "-" version ".tar.gz"))
+        (file-name (string-append name "-" version ".crate"))
         (sha256
          (base32 "14s97blyqgf9hzxk22iazrghj60midajkw2801dfspz3n2iqmwb3"))))
     (build-system cargo-build-system)
@@ -4134,10 +3729,11 @@ or XID_Continue properties according to Unicode Standard Annex #31.")
     (synopsis "Remove a column of leading whitespace from a string")
     (description "This crate allows you to remove a column of leading
 whitespace from a string.")
+    (properties '((hidden? . #t)))
     (license (list license:asl2.0
                    license:expat))))
 
-(define-public rust-unreachable
+(define-public rust-unreachable-1.0
   (package
     (name "rust-unreachable")
     (version "1.0.0")
@@ -4145,21 +3741,20 @@ whitespace from a string.")
       (origin
         (method url-fetch)
         (uri (crate-uri "unreachable" version))
-        (file-name (string-append name "-" version ".tar.gz"))
+        (file-name (string-append name "-" version ".crate"))
         (sha256
          (base32
           "0mps2il4xy2mjqc3appas27hhn2xmvixc3bzzhfrjj74gy3i0a1q"))))
     (build-system cargo-build-system)
-    (arguments
-     `(#:cargo-inputs (("rust-void" ,rust-void))))
     (home-page "https://github.com/reem/rust-unreachable")
     (synopsis "Unreachable code optimization hint in rust")
     (description
      "This package provides an unreachable code optimization hint in rust.")
+    (properties '((hidden? . #t)))
     (license (list license:asl2.0
                    license:expat))))
 
-(define-public rust-unsafe-any
+(define-public rust-unsafe-any-0.4
   (package
     (name "rust-unsafe-any")
     (version "0.4.2")
@@ -4167,21 +3762,19 @@ whitespace from a string.")
       (origin
         (method url-fetch)
         (uri (crate-uri "unsafe-any" version))
-        (file-name (string-append name "-" version ".tar.gz"))
+        (file-name (string-append name "-" version ".crate"))
         (sha256
          (base32
           "0zwwphsqkw5qaiqmjwngnfpv9ym85qcsyj7adip9qplzjzbn00zk"))))
     (build-system cargo-build-system)
-    (arguments
-     `(#:cargo-inputs
-       (("rust-traitobject" ,rust-traitobject))))
     (home-page "https://tokio.rs")
     (synopsis "Traits and implementations for unchecked downcasting")
     (description
      "Traits and implementations for unchecked downcasting.")
+    (properties '((hidden? . #t)))
     (license license:expat)))
 
-(define-public rust-untrusted
+(define-public rust-untrusted-0.7
   (package
     (name "rust-untrusted")
     (version "0.7.0")
@@ -4189,7 +3782,7 @@ whitespace from a string.")
       (origin
         (method url-fetch)
         (uri (crate-uri "untrusted" version))
-        (file-name (string-append name "-" version ".tar.gz"))
+        (file-name (string-append name "-" version ".crate"))
         (sha256
          (base32
           "1kmfykcwif6ashkwg54gcnhxj03kpba2i9vc7z5rpr0xlgvrwdk0"))))
@@ -4199,9 +3792,10 @@ whitespace from a string.")
     (description
      "Safe, fast, zero-panic, zero-crashing, zero-allocation parsing of
 untrusted inputs in Rust.")
+    (properties '((hidden? . #t)))
     (license license:isc)))
 
-(define-public rust-vcpkg
+(define-public rust-vcpkg-0.2
   (package
     (name "rust-vcpkg")
     (version "0.2.7")
@@ -4209,25 +3803,21 @@ untrusted inputs in Rust.")
       (origin
         (method url-fetch)
         (uri (crate-uri "vcpkg" version))
-        (file-name (string-append name "-" version ".tar.gz"))
+        (file-name (string-append name "-" version ".crate"))
         (sha256
          (base32
           "15dzk1b96q946v9aisbd1bbhi33n93wvgziwh1shmscn1xflbp9k"))))
     (build-system cargo-build-system)
-    (arguments
-     `(#:cargo-development-inputs
-       (("rust-lazy-static" ,rust-lazy-static)
-        ("rust-tempdir" ,rust-tempdir))
-       #:tests? #f)) ; tests try to link libmysql, graphite2, harfbuzz
     (home-page "https://github.com/mcgoo/vcpkg-rs")
     (synopsis "Find native dependencies in a vcpkg tree at build time")
     (description
      "This package provides a library to find native dependencies in a
 @code{vcpkg} tree at build time in order to be used in Cargo build scripts.")
+    (properties '((hidden? . #t)))
     (license (list license:asl2.0
                    license:expat))))
 
-(define-public rust-version-check
+(define-public rust-version-check-0.9
   (package
     (name "rust-version-check")
     (version "0.9.1")
@@ -4235,7 +3825,7 @@ untrusted inputs in Rust.")
       (origin
         (method url-fetch)
         (uri (crate-uri "version_check" version))
-        (file-name (string-append name "-" version ".tar.gz"))
+        (file-name (string-append name "-" version ".crate"))
         (sha256
          (base32
           "1kikqlnggii1rvnxrbls55sc46lxvinz5k3giscgncjj4p87b1q7"))))
@@ -4248,24 +3838,25 @@ version requirements.  The version is queried by calling the Rust compiler with
 @code{--version}.  The path to the compiler is determined first via the
 @code{RUSTC} environment variable.  If it is not set, then @code{rustc} is used.
 If that fails, no determination is made, and calls return None.")
+    (properties '((hidden? . #t)))
     (license (list license:asl2.0
                    license:expat))))
 
 (define-public rust-version-check-0.1
   (package
-    (inherit rust-version-check)
+    (inherit rust-version-check-0.9)
     (name "rust-version-check")
     (version "0.1.5")
     (source
       (origin
         (method url-fetch)
         (uri (crate-uri "version_check" version))
-        (file-name (string-append name "-" version ".tar.gz"))
+        (file-name (string-append name "-" version ".crate"))
         (sha256
          (base32
           "1pf91pvj8n6akh7w6j5ypka6aqz08b3qpzgs0ak2kjf4frkiljwi"))))))
 
-(define-public rust-void
+(define-public rust-void-1.0
   (package
     (name "rust-void")
     (version "1.0.2")
@@ -4273,7 +3864,7 @@ If that fails, no determination is made, and calls return None.")
       (origin
         (method url-fetch)
         (uri (crate-uri "void" version))
-        (file-name (string-append name "-" version ".tar.gz"))
+        (file-name (string-append name "-" version ".crate"))
         (sha256
          (base32
           "0zc8f0ksxvmhvgx4fdg0zyn6vdnbxd2xv9hfx4nhzg6kbs4f80ka"))))
@@ -4282,9 +3873,10 @@ If that fails, no determination is made, and calls return None.")
     (synopsis "Void type for use in statically impossible cases")
     (description
      "The uninhabited void type for use in statically impossible cases.")
+    (properties '((hidden? . #t)))
     (license license:expat)))
 
-(define-public rust-walkdir
+(define-public rust-walkdir-2.2
   (package
     (name "rust-walkdir")
     (version "2.2.9")
@@ -4292,25 +3884,19 @@ If that fails, no determination is made, and calls return None.")
       (origin
         (method url-fetch)
         (uri (crate-uri "walkdir" version))
-        (file-name (string-append name "-" version ".tar.gz"))
+        (file-name (string-append name "-" version ".crate"))
         (sha256
          (base32
           "07ppalpvxkf8cnqr64np422792y4z5bs9m8b4nrflh5rm17wjn4n"))))
     (build-system cargo-build-system)
-    (arguments
-     `(#:cargo-inputs
-       (("rust-same-file" ,rust-same-file)
-        ("rust-winapi" ,rust-winapi)
-        ("rust-winapi-util" ,rust-winapi-util))
-       #:cargo-development-inputs
-       (("rust-doc-comment" ,rust-doc-comment))))
     (home-page  "https://github.com/BurntSushi/walkdir")
     (synopsis "Recursively walk a directory")
     (description "Recursively walk a directory.")
+    (properties '((hidden? . #t)))
     (license (list license:unlicense
                    license:expat))))
 
-(define-public rust-wasi
+(define-public rust-wasi-0.5
   (package
     (name "rust-wasi")
     (version "0.5.0")
@@ -4319,7 +3905,7 @@ If that fails, no determination is made, and calls return None.")
        (method url-fetch)
        (uri (crate-uri "wasi" version))
        (file-name
-        (string-append name "-" version ".tar.gz"))
+        (string-append name "-" version ".crate"))
        (sha256
         (base32
          "1ir3pd4phdfml0cbziw9bqp7mnk0vfp9biy8bh25lln6raml4m7x"))))
@@ -4328,9 +3914,10 @@ If that fails, no determination is made, and calls return None.")
     (synopsis "Experimental WASI API bindings for Rust")
     (description "This package contains experimental WASI API bindings
 in Rust.")
+    (properties '((hidden? . #t)))
     (license license:asl2.0)))
 
-(define-public rust-wasm-bindgen-shared
+(define-public rust-wasm-bindgen-shared-0.2
   (package
     (name "rust-wasm-bindgen-shared")
     (version "0.2.48")
@@ -4338,7 +3925,7 @@ in Rust.")
       (origin
         (method url-fetch)
         (uri (crate-uri "wasm-bindgen-shared" version))
-        (file-name (string-append name "-" version ".tar.gz"))
+        (file-name (string-append name "-" version ".crate"))
         (sha256
          (base32
           "08rnfhjyk0f6liv8n4rdsvhx7r02glkhcbj2lp9lcbkbfpad9hnr"))))
@@ -4347,10 +3934,11 @@ in Rust.")
     (synopsis "Shared support between wasm-bindgen and wasm-bindgen cli")
     (description "This package provides shared support between
 @code{wasm-bindgen} and @code{wasm-bindgen} cli, an internal dependency.")
+    (properties '((hidden? . #t)))
     (license (list license:asl2.0
                    license:expat))))
 
-(define-public rust-wasm-bindgen-test-macro
+(define-public rust-wasm-bindgen-test-macro-0.2
   (package
     (name "rust-wasm-bindgen-test-macro")
     (version "0.2.48")
@@ -4358,23 +3946,20 @@ in Rust.")
       (origin
         (method url-fetch)
         (uri (crate-uri "wasm-bindgen-test-macro" version))
-        (file-name (string-append name "-" version ".tar.gz"))
+        (file-name (string-append name "-" version ".crate"))
         (sha256
          (base32
           "0n28mr6vncf1k1qr2b5bvfxq4jvqkjdzq0z0ab6w2f5d6v8q3q3l"))))
     (build-system cargo-build-system)
-    (arguments
-     `(#:cargo-inputs
-       (("rust-proc-macro2" ,rust-proc-macro2)
-        ("rust-quote" ,rust-quote))))
     (home-page "https://github.com/rustwasm/wasm-bindgen")
     (synopsis "Internal testing macro for wasm-bindgen")
     (description
      "This library contains the internal testing macro for wasm-bindgen.")
+    (properties '((hidden? . #t)))
     (license (list license:asl2.0
                    license:expat))))
 
-(define-public rust-widestring
+(define-public rust-widestring-0.4
   (package
     (name "rust-widestring")
     (version "0.4.0")
@@ -4382,24 +3967,22 @@ in Rust.")
       (origin
         (method url-fetch)
         (uri (crate-uri "widestring" version))
-        (file-name (string-append name "-" version ".tar.gz"))
+        (file-name (string-append name "-" version ".crate"))
         (sha256
          (base32
           "1dhx6dndjsz1y7c9w06922412kdxyrrkqblvggm76mh8z17hxz7g"))))
     (build-system cargo-build-system)
-    (arguments
-     `(#:cargo-development-inputs
-       (("rust-winapi" ,rust-winapi))))
     (home-page "https://github.com/starkat99/widestring-rs")
     (synopsis "Wide string Rust FFI library")
     (description
      "A wide string Rust FFI library for converting to and from wide strings,
 such as those often used in Windows API or other FFI libraries.  Both UTF-16 and
 UTF-32 types are provided, including support for malformed encoding.")
+    (properties '((hidden? . #t)))
     (license (list license:asl2.0
                    license:expat))))
 
-(define-public rust-winapi
+(define-public rust-winapi-0.3
   (package
     (name "rust-winapi")
     (version "0.3.8")
@@ -4407,46 +3990,34 @@ UTF-32 types are provided, including support for malformed encoding.")
       (origin
         (method url-fetch)
         (uri (crate-uri "winapi" version))
-        (file-name (string-append name "-" version ".tar.gz"))
+        (file-name (string-append name "-" version ".crate"))
         (sha256
          (base32
           "1ii9j9lzrhwri0902652awifzx9fpayimbp6hfhhc296xcg0k4w0"))))
     (build-system cargo-build-system)
-    (arguments
-     `(#:cargo-inputs
-       (("rust-winapi-i686-pc-windows-gnu"
-         ,rust-winapi-i686-pc-windows-gnu)
-        ("rust-winapi-x86-64-pc-windows-gnu"
-         ,rust-winapi-x86-64-pc-windows-gnu))))
     (home-page "https://github.com/retep998/winapi-rs")
     (synopsis "Raw FFI bindings for all of Windows API.")
     (description
      "Raw FFI bindings for all of Windows API.")
+    (properties '((hidden? . #t)))
     (license (list license:asl2.0
                    license:expat))))
 
 (define-public rust-winapi-0.2
   (package
-    (inherit rust-winapi)
+    (inherit rust-winapi-0.3)
     (name "rust-winapi")
     (version "0.2.8")
     (source
       (origin
         (method url-fetch)
         (uri (crate-uri "winapi" version))
-        (file-name (string-append name "-" version ".tar.gz"))
+        (file-name (string-append name "-" version ".crate"))
         (sha256
          (base32
-          "0yh816lh6lf56dpsgxy189c2ai1z3j8mw9si6izqb6wsjkbcjz8n"))))
-    ;; We do not want to package 48 -sys crates for a package we do not want.
-    ;; They are all dev dependencies, so we skip building and testing.
-    (arguments
-     `(#:tests? #f
-       #:phases
-       (modify-phases %standard-phases
-         (delete 'build))))))
+          "0yh816lh6lf56dpsgxy189c2ai1z3j8mw9si6izqb6wsjkbcjz8n"))))))
 
-(define-public rust-winapi-build
+(define-public rust-winapi-build-0.1
   (package
     (name "rust-winapi-build")
     (version "0.1.1")
@@ -4454,7 +4025,7 @@ UTF-32 types are provided, including support for malformed encoding.")
       (origin
         (method url-fetch)
         (uri (crate-uri "winapi-build" version))
-        (file-name (string-append name "-" version ".tar.gz"))
+        (file-name (string-append name "-" version ".crate"))
         (sha256
          (base32
           "1g4rqsgjky0a7530qajn2bbfcrl2v0zb39idgdws9b1l7gp5wc9d"))))
@@ -4463,9 +4034,10 @@ UTF-32 types are provided, including support for malformed encoding.")
     (synopsis "Common code for build.rs in WinAPI -sys crates")
     (description
      "Common code for build.rs in WinAPI -sys crates.")
+    (properties '((hidden? . #t)))
     (license license:expat)))
 
-(define-public rust-winapi-i686-pc-windows-gnu
+(define-public rust-winapi-i686-pc-windows-gnu-0.4
   (package
     (name "rust-winapi-i686-pc-windows-gnu")
     (version "0.4.0")
@@ -4473,7 +4045,7 @@ UTF-32 types are provided, including support for malformed encoding.")
       (origin
         (method url-fetch)
         (uri (crate-uri "winapi-i686-pc-windows-gnu" version))
-        (file-name (string-append name "-" version ".tar.gz"))
+        (file-name (string-append name "-" version ".crate"))
         (sha256
          (base32
           "1dmpa6mvcvzz16zg6d5vrfy4bxgg541wxrcip7cnshi06v38ffxc"))))
@@ -4483,10 +4055,11 @@ UTF-32 types are provided, including support for malformed encoding.")
     (description "This crate provides import libraries for the
 i686-pc-windows-gnu target.  Please don't use this crate directly, depend on
 @code{winapi} instead.")
+    (properties '((hidden? . #t)))
     (license (list license:asl2.0
                    license:expat))))
 
-(define-public rust-winapi-util
+(define-public rust-winapi-util-0.1
   (package
     (name "rust-winapi-util")
     (version "0.1.2")
@@ -4494,22 +4067,21 @@ i686-pc-windows-gnu target.  Please don't use this crate directly, depend on
       (origin
         (method url-fetch)
         (uri (crate-uri "winapi-util" version))
-        (file-name (string-append name "-" version ".tar.gz"))
+        (file-name (string-append name "-" version ".crate"))
         (sha256
          (base32
           "1j839dc6y8vszvrsb7yk0qvs0w6asnahxzbyans37vnsw6vbls3i"))))
     (build-system cargo-build-system)
-    (arguments
-     `(#:cargo-inputs (("rust-winapi" ,rust-winapi))))
     (home-page "https://github.com/BurntSushi/winapi-util")
     (synopsis "Dumping ground for high level safe wrappers over winapi")
     (description
      "This package provides a dumping ground for high level safe wrappers over
 winapi.")
+    (properties '((hidden? . #t)))
     (license (list license:unlicense
                    license:expat))))
 
-(define-public rust-winapi-x86-64-pc-windows-gnu
+(define-public rust-winapi-x86-64-pc-windows-gnu-0.4
   (package
     (name "rust-winapi-x86-64-pc-windows-gnu")
     (version "0.4.0")
@@ -4517,7 +4089,7 @@ winapi.")
       (origin
         (method url-fetch)
         (uri (crate-uri "winapi-x86_64-pc-windows-gnu" version))
-        (file-name (string-append name "-" version ".tar.gz"))
+        (file-name (string-append name "-" version ".crate"))
         (sha256
          (base32
           "0gqq64czqb64kskjryj8isp62m2sgvx25yyj3kpc2myh85w24bki"))))
@@ -4527,10 +4099,11 @@ winapi.")
     (description "This package provides import libraries for the
 x86_64-pc-windows-gnu target.  Please don't use this crate directly, depend on
 @code{winapi} instead.")
+    (properties '((hidden? . #t)))
     (license (list license:asl2.0
                    license:expat))))
 
-(define-public rust-wincolor
+(define-public rust-wincolor-1.0
   (package
     (name "rust-wincolor")
     (version "1.0.2")
@@ -4538,24 +4111,21 @@ x86_64-pc-windows-gnu target.  Please don't use this crate directly, depend on
       (origin
         (method url-fetch)
         (uri (crate-uri "wincolor" version))
-        (file-name (string-append name "-" version ".tar.gz"))
+        (file-name (string-append name "-" version ".crate"))
         (sha256
          (base32
           "1agaf3hcav113i86912ajnw6jxcy4rvkrgyf8gdj8kc031mh3xcn"))))
     (build-system cargo-build-system)
-    (arguments
-     `(#:cargo-inputs
-       (("rust-winapi" ,rust-winapi)
-        ("rust-winapi-util" ,rust-winapi-util))))
     (home-page "https://github.com/BurntSushi/termcolor/tree/master/wincolor")
     (synopsis "Windows API for controlling text color in a Windows console")
     (description
      "This package provides a simple Windows specific API for controlling text
 color in a Windows console.")
+    (properties '((hidden? . #t)))
     (license (list license:unlicense
                    license:expat))))
 
-(define-public rust-winutil
+(define-public rust-winutil-0.1
   (package
     (name "rust-winutil")
     (version "0.1.1")
@@ -4563,26 +4133,19 @@ color in a Windows console.")
       (origin
         (method url-fetch)
         (uri (crate-uri "winutil" version))
-        (file-name (string-append name "-" version ".tar.gz"))
+        (file-name (string-append name "-" version ".crate"))
         (sha256
          (base32
           "0vkyl3fbbf05n5ph5yz8sfaccrk9x3qsr25560w6w68ldf5i7bvx"))))
     (build-system cargo-build-system)
-    (arguments
-     `(#:cargo-inputs
-       (("rust-winapi" ,rust-winapi))
-       ;; This unmaintained crate cannot find winapi when built directly.
-       #:tests? #f
-       #:phases
-       (modify-phases %standard-phases
-         (delete 'build))))
     (home-page "https://bitbucket.org/DaveLancaster/winutil")
     (synopsis "Library wrapping a handful of useful winapi functions")
     (description
      "A simple library wrapping a handful of useful winapi functions.")
+    (properties '((hidden? . #t)))
     (license license:expat)))
 
-(define-public rust-ws2-32-sys
+(define-public rust-ws2-32-sys-0.2
   (package
     (name "rust-ws2-32-sys")
     (version "0.2.1")
@@ -4590,29 +4153,19 @@ color in a Windows console.")
       (origin
         (method url-fetch)
         (uri (crate-uri "ws2_32-sys" version))
-        (file-name (string-append name "-" version ".tar.gz"))
+        (file-name (string-append name "-" version ".crate"))
         (sha256
          (base32
           "0ppscg5qfqaw0gzwv2a4nhn5bn01ff9iwn6ysqnzm4n8s3myz76m"))))
     (build-system cargo-build-system)
-    (arguments
-     `(#:cargo-inputs
-       (("rust-winapi" ,rust-winapi-0.2)
-        ("rust-winapi-build" ,rust-winapi-build))
-       #:phases
-       (modify-phases %standard-phases
-         (add-after 'unpack 'fix-Cargo-toml
-           (lambda _
-             (substitute* "Cargo.toml"
-               ((", path =.* }") "}\n"))
-             #t)))))
     (home-page "https://github.com/retep998/winapi-rs")
     (synopsis "Function definitions for the Windows API library ws2_32")
     (description
      "Contains function definitions for the Windows API library ws2_32.")
+    (properties '((hidden? . #t)))
     (license license:expat)))
 
-(define-public rust-xattr
+(define-public rust-xattr-0.2
   (package
     (name "rust-xattr")
     (version "0.2.2")
@@ -4620,26 +4173,21 @@ color in a Windows console.")
       (origin
         (method url-fetch)
         (uri (crate-uri "xattr" version))
-        (file-name (string-append name "-" version ".tar.gz"))
+        (file-name (string-append name "-" version ".crate"))
         (sha256
          (base32
           "0k556fb6f5jc907975j9c8iynl2fqz3rf0w6fiig83i4yi0kfk14"))))
     (build-system cargo-build-system)
-    (arguments
-     `(#:cargo-inputs
-       (("rust-libc" ,rust-libc))
-       #:cargo-development-inputs
-       (("rust-tempfile" ,rust-tempfile))
-       #:tests? #f)) ; Tests assume read access to /var.
     (home-page "https://github.com/Stebalien/xattr")
     (synopsis "Unix extended filesystem attributes")
     (description
      "This package provide a small library for setting, getting, and listing
 extended attributes.")
+    (properties '((hidden? . #t)))
     (license (list license:asl2.0
                    license:expat))))
 
-(define-public rust-xdg
+(define-public rust-xdg-2.2
   (package
     (name "rust-xdg")
     (version "2.2.0")
@@ -4647,7 +4195,7 @@ extended attributes.")
       (origin
         (method url-fetch)
         (uri (crate-uri "xdg" version))
-        (file-name (string-append name "-" version ".tar.gz"))
+        (file-name (string-append name "-" version ".crate"))
         (sha256
          (base32
           "0mws8a0fr3cqk5nh7aq9lmkmhzghvasqy4mhw6nnza06l4d6i2fh"))))
@@ -4657,5 +4205,6 @@ extended attributes.")
     (description
      "This package provides a library for storing and retrieving files according
 to XDG Base Directory specification")
+    (properties '((hidden? . #t)))
     (license (list license:asl2.0
                    license:expat))))