Merge branch 'master' into python-tests

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+;;; GNU Guix --- Functional package management for GNU
+;;; Copyright © 2016 David Craven <david@craven.ch>
+;;; Copyright © 2016 Eric Le Bihan <eric.le.bihan.dev@free.fr>
+;;; Copyright © 2016 ng0 <ng0@libertad.pw>
+;;;
+;;; This file is part of GNU Guix.
+;;;
+;;; GNU Guix is free software; you can redistribute it and/or modify it
+;;; under the terms of the GNU General Public License as published by
+;;; the Free Software Foundation; either version 3 of the License, or (at
+;;; your option) any later version.
+;;;
+;;; GNU Guix is distributed in the hope that it will be useful, but
+;;; WITHOUT ANY WARRANTY; without even the implied warranty of
+;;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+;;; GNU General Public License for more details.
+;;;
+;;; You should have received a copy of the GNU General Public License
+;;; along with GNU Guix.  If not, see <http://www.gnu.org/licenses/>.
+
+(define-module (gnu packages rust)
+  #:use-module (gnu packages base)
+  #:use-module (gnu packages bootstrap)
+  #:use-module (gnu packages cmake)
+  #:use-module (gnu packages compression)
+  #:use-module (gnu packages curl)
+  #:use-module (gnu packages elf)
+  #:use-module (gnu packages gcc)
+  #:use-module (gnu packages jemalloc)
+  #:use-module (gnu packages llvm)
+  #:use-module (gnu packages pkg-config)
+  #:use-module (gnu packages python)
+  #:use-module (gnu packages ssh)
+  #:use-module (gnu packages tls)
+  #:use-module (gnu packages version-control)
+  #:use-module (guix build-system cargo)
+  #:use-module (guix build-system gnu)
+  #:use-module (guix build-system trivial)
+  #:use-module (guix download)
+  #:use-module ((guix licenses) #:prefix license:)
+  #:use-module (guix packages)
+  #:use-module (ice-9 match)
+  #:use-module (srfi srfi-26))
+
+;; Should be one less than the current released version.
+(define %rust-bootstrap-binaries-version "1.13.0")
+
+(define %rust-bootstrap-binaries
+  (origin
+    (method url-fetch)
+    (uri (string-append
+          "https://static.rust-lang.org/dist/"
+          "rust-" %rust-bootstrap-binaries-version
+          "-i686-unknown-linux-gnu.tar.gz"))
+    (sha256
+     (base32
+      "0fcl7xgm2m21sjv1f27i3v692aa91lk8r867hl8d6l377w8k95r3"))))
+
+(define (increment-rust-version rust-version major patch)
+  (match (string-split rust-version #\.)
+    (("1" minor _)
+     (string-append (number->string major) "."
+                    (number->string (+ (string->number minor) 1)) "."
+                    (number->string patch)))))
+
+(define* (cargo-version rustc-version #:optional (patch 0))
+  ;; Computes the cargo version that matches the rustc version.
+  ;; https://github.com/rust-lang/cargo#Releases
+  (increment-rust-version rustc-version 0 patch))
+
+(define* (rustc-version bootstrap-version #:optional (patch 0))
+  ;; Computes the rustc version that can be compiled from a given
+  ;; other rustc version. The patch argument is for selecting
+  ;; a stability or security fix. 1.11.0 -> 1.12.1 -> 1.13.0
+  (increment-rust-version bootstrap-version 1 patch))
+
+(define rustc-bootstrap
+  (package
+    (name "rustc-bootstrap")
+    (version %rust-bootstrap-binaries-version)
+    (source %rust-bootstrap-binaries)
+    (build-system gnu-build-system)
+    (native-inputs
+     `(("patchelf" ,patchelf)))
+    (inputs
+     `(("gcc:lib" ,(canonical-package gcc) "lib")
+       ("zlib" ,zlib)))
+    (arguments
+     `(#:tests? #f
+       #:strip-binaries? #f
+       #:system "i686-linux"
+       #:phases
+       (modify-phases %standard-phases
+         (delete 'configure)
+         (delete 'build)
+         (replace 'install
+           (lambda* (#:key inputs outputs #:allow-other-keys)
+             (let* ((out (assoc-ref outputs "out"))
+                    (gcc:lib (assoc-ref inputs "gcc:lib"))
+                    (libc (assoc-ref inputs "libc"))
+                    (zlib (assoc-ref inputs "zlib"))
+                    (ld-so (string-append libc
+                                          ,(glibc-dynamic-linker "i686-linux")))
+                    (rpath (string-append out "/lib:" zlib "/lib:"
+                                          libc "/lib:" gcc:lib "/lib"))
+                    (rustc (string-append out "/bin/rustc"))
+                    (rustdoc (string-append out "/bin/rustdoc")))
+               (system* "bash" "install.sh"
+                        (string-append "--prefix=" out)
+                        (string-append "--components=rustc,"
+                                       "rust-std-i686-unknown-linux-gnu"))
+               (for-each (lambda (file)
+                           (system* "patchelf" "--set-rpath" rpath file))
+                         (cons* rustc rustdoc (find-files out "\\.so$")))
+               (for-each (lambda (file)
+                           (system* "patchelf" "--set-interpreter" ld-so file))
+                         (list rustc rustdoc))))))))
+    (supported-systems '("i686-linux" "x86_64-linux"))
+    (home-page "https://www.rust-lang.org")
+    (synopsis "Prebuilt rust compiler")
+    (description "This package provides a pre-built @command{rustc} compiler,
+which can in turn be used to build the final Rust compiler.")
+    (license license:asl2.0)))
+
+(define cargo-bootstrap
+  (package
+    (name "cargo-bootstrap")
+    (version (cargo-version %rust-bootstrap-binaries-version))
+    (source %rust-bootstrap-binaries)
+    (build-system gnu-build-system)
+    (native-inputs
+     `(("patchelf" ,patchelf)))
+    (inputs
+     `(("gcc:lib" ,(canonical-package gcc) "lib")))
+    (arguments
+     `(#:tests? #f
+       #:strip-binaries? #f
+       #:system "i686-linux"
+       #:phases
+       (modify-phases %standard-phases
+         (delete 'configure)
+         (delete 'build)
+         (replace 'install
+           (lambda* (#:key inputs outputs #:allow-other-keys)
+             (let* ((out (assoc-ref outputs "out"))
+                    (gcc:lib (assoc-ref inputs "gcc:lib"))
+                    (libc (assoc-ref inputs "libc"))
+                    (ld-so (string-append libc
+                                          ,(glibc-dynamic-linker "i686-linux")))
+                    (rpath (string-append out "/lib:" libc "/lib:"
+                                          gcc:lib "/lib"))
+                    (cargo (string-append out "/bin/cargo")))
+               (system* "bash" "install.sh"
+                        (string-append "--prefix=" out)
+                        "--components=cargo")
+               (system* "patchelf"
+                        "--set-interpreter" ld-so
+                        "--set-rpath" rpath
+                        cargo)))))))
+    (supported-systems '("i686-linux" "x86_64-linux"))
+    (home-page "https://www.rust-lang.org")
+    (synopsis "Prebuilt cargo package manager")
+    (description "This package provides a pre-built @command{cargo} package
+manager, which is required to build itself.")
+    (license license:asl2.0)))
+
+(define rust-bootstrap
+  (package
+    (name "rust-bootstrap")
+    (version %rust-bootstrap-binaries-version)
+    (source #f)
+    (build-system trivial-build-system)
+    (propagated-inputs
+     `(("rustc-bootstrap" ,rustc-bootstrap)
+       ("cargo-bootstrap" ,cargo-bootstrap)
+       ("gcc" ,(canonical-package gcc))))
+    (arguments
+     `(#:modules ((guix build utils))
+       #:builder
+       (begin
+         (use-modules (guix build utils))
+         (let ((out (assoc-ref %outputs "out"))
+               (gcc (assoc-ref %build-inputs "gcc")))
+           (mkdir-p (string-append out "/bin"))
+           ;; Rust requires a C toolchain for linking. The prebuilt
+           ;; binaries expect a compiler called cc. Thus symlink gcc
+           ;; to cc.
+           (symlink (string-append gcc "/bin/gcc")
+                    (string-append out "/bin/cc"))))))
+    (home-page "https://www.rust-lang.org")
+    (synopsis "Rust bootstrapping meta package")
+    (description "Meta package for a rust environment. Provides pre-compiled
+rustc-bootstrap and cargo-bootstrap packages.")
+    (license license:asl2.0)))
+
+(define-public rustc
+  (package
+    (name "rustc")
+    (version (rustc-version %rust-bootstrap-binaries-version))
+    (source (origin
+              (method url-fetch)
+              (uri (string-append
+                    "https://static.rust-lang.org/dist/"
+                    "rustc-" version "-src.tar.gz"))
+              (sha256
+               (base32
+                "0srvmhhdbbcl21nzg9m9zni7k10h88lsy8k1ljz03g8mx79fv467"))))
+    (build-system gnu-build-system)
+    (native-inputs
+     `(("cmake" ,cmake)
+       ("git" ,git)
+       ("python-2" ,python-2)
+       ("rust-bootstrap" ,rust-bootstrap)
+       ("which" ,which)))
+    (inputs
+     `(("jemalloc" ,jemalloc)
+       ("llvm" ,llvm)))
+    (arguments
+     ;; FIXME: Test failure with llvm 3.8; Update llvm.
+     ;; https://github.com/rust-lang/rust/issues/36835
+     `(#:tests? #f
+       #:phases
+       (modify-phases %standard-phases
+         (add-after 'unpack 'patch-configure
+           (lambda _
+             ;; Detect target CPU correctly.
+             (substitute* "configure"
+               (("/usr/bin/env") (which "env")))
+             ;; Avoid curl as a build dependency.
+             (substitute* "configure"
+               (("probe_need CFG_CURL curl") ""))))
+         (add-after 'unpack 'set-env
+           (lambda _
+             (setenv "SHELL" (which "sh"))
+             (setenv "CONFIG_SHELL" (which "sh"))))
+         (add-after 'unpack 'patch-lockfile-test
+           (lambda _
+             (substitute* "src/tools/tidy/src/main.rs"
+               (("^.*cargo.*::check.*$") ""))))
+         (replace 'configure
+           (lambda* (#:key inputs outputs #:allow-other-keys)
+             (let* ((out (assoc-ref outputs "out"))
+                    (gcc (assoc-ref inputs "gcc"))
+                    (binutils (assoc-ref inputs "binutils"))
+                    (python (assoc-ref inputs "python-2"))
+                    (rustc (assoc-ref inputs "rustc-bootstrap"))
+                    (llvm (assoc-ref inputs "llvm"))
+                    (jemalloc (assoc-ref inputs "jemalloc"))
+                    (flags (list
+                            (string-append "--prefix=" out)
+                            (string-append "--datadir=" out "/share")
+                            (string-append "--infodir=" out "/share/info")
+                            (string-append "--default-linker=" gcc "/bin/gcc")
+                            (string-append "--default-ar=" binutils "/bin/ar")
+                            (string-append "--python=" python "/bin/python2")
+                            (string-append "--local-rust-root=" rustc)
+                            (string-append "--llvm-root=" llvm)
+                            (string-append "--jemalloc-root=" jemalloc "/lib")
+                            "--release-channel=stable"
+                            "--enable-rpath"
+                            "--enable-local-rust"
+                            ;;"--enable-rustbuild"
+                            "--disable-manage-submodules")))
+               ;; Rust uses a custom configure script (no autoconf).
+               (zero? (apply system* "./configure" flags)))))
+         (add-after 'install 'wrap-rustc
+           (lambda* (#:key inputs outputs #:allow-other-keys)
+             (let ((out (assoc-ref outputs "out"))
+                   (libc (assoc-ref inputs "libc"))
+                   (ld-wrapper (assoc-ref inputs "ld-wrapper")))
+               ;; Let gcc find ld and libc startup files.
+               (wrap-program (string-append out "/bin/rustc")
+                 `("PATH" ":" prefix (,(string-append ld-wrapper "/bin")))
+                 `("LIBRARY_PATH" ":" suffix (,(string-append libc "/lib"))))))))))
+    (synopsis "Compiler for the Rust progamming language")
+    (description "Rust is a systems programming language that provides memory
+safety and thread safety guarantees.")
+    (home-page "https://www.rust-lang.org")
+    ;; Dual licensed.
+    (license (list license:asl2.0 license:expat))))
+
+(define-public cargo
+  (package
+    (name "cargo")
+    (version (cargo-version (rustc-version %rust-bootstrap-binaries-version)))
+    (source (origin
+              (method url-fetch)
+              ;; Use a cargo tarball with vendored dependencies and a cargo
+              ;; config file.
+              (uri (string-append
+                    "https://github.com/dvc94ch/cargo"
+                    "/archive/" version "-cargo-vendor.tar.gz"))
+              (file-name (string-append name "-" version ".tar.gz"))
+              (sha256
+               (base32
+                "0hpix5hwz10pm1wh65gimhsy9nxjvy7yikgbpw8afwglqr3bl856"))))
+    (build-system cargo-build-system)
+    (propagated-inputs
+     `(("cmake" ,cmake)
+       ("pkg-config" ,pkg-config)))
+    (inputs
+     `(("curl" ,curl)
+       ("libgit2" ,libgit2)
+       ("libssh2" ,libssh2)
+       ("openssl" ,openssl)
+       ("python-2" ,python-2)
+       ("zlib" ,zlib)))
+    (arguments
+     `(#:cargo ,cargo-bootstrap
+       #:tests? #f ; FIXME
+       #:phases
+       (modify-phases %standard-phases
+         ;; Avoid cargo complaining about missmatched checksums.
+         (delete 'patch-source-shebangs)
+         (delete 'patch-generated-file-shebangs)
+         (delete 'patch-usr-bin-file)
+         ;; Set CARGO_HOME to use the vendored dependencies.
+         (add-after 'unpack 'set-cargo-home
+           (lambda* (#:key inputs #:allow-other-keys)
+             (let* ((gcc (assoc-ref inputs "gcc"))
+                    (cc (string-append gcc "/bin/gcc")))
+               (setenv "CARGO_HOME" (string-append (getcwd) "/cargohome"))
+               (setenv "CMAKE_C_COMPILER" cc)
+               (setenv "CC" cc))
+             #t)))))
+    (home-page "https://github.com/rust-lang/cargo")
+    (synopsis "Build tool and package manager for Rust")
+    (description "Cargo is a tool that allows Rust projects to declare their
+dependencies and ensures a reproducible build.")
+    ;; Cargo is dual licensed Apache and MIT. Also contains
+    ;; code from openssl which is GPL2 with linking exception.
+    (license (list license:asl2.0 license:expat license:gpl2))))