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+;;; GNU Guix --- Functional package management for GNU
+;;; Copyright © 2019 Efraim Flashner <efraim@flashner.co.il>
+;;;
+;;; 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 perl6)
+  #:use-module ((guix licenses) #:prefix license:)
+  #:use-module (guix download)
+  #:use-module (guix git-download)
+  #:use-module (guix packages)
+  #:use-module (guix build-system perl)
+  #:use-module (guix build-system rakudo)
+  #:use-module (gnu packages bdw-gc)
+  #:use-module (gnu packages libevent)
+  #:use-module (gnu packages libffi)
+  #:use-module (gnu packages multiprecision)
+  #:use-module (gnu packages pkg-config)
+  #:use-module (gnu packages tls))
+
+(define-public moarvm
+  (package
+    (name "moarvm")
+    (version "2019.03")
+    (source
+      (origin
+        (method url-fetch)
+        (uri (string-append "https://moarvm.org/releases/MoarVM-"
+                            version ".tar.gz"))
+        (sha256
+         (base32
+          "017w1zvr6yl0cgjfc1b3ddlc6vjw9q8p7alw1vvsckw95190xc14"))
+        (modules '((guix build utils)))
+        (snippet
+         '(begin
+            ;(delete-file-recursively "3rdparty/dynasm") ; JIT
+            (delete-file-recursively "3rdparty/dyncall")
+            (delete-file-recursively "3rdparty/freebsd")
+            (delete-file-recursively "3rdparty/libatomicops")
+            (delete-file-recursively "3rdparty/libuv")
+            (delete-file-recursively "3rdparty/libtommath")
+            (delete-file-recursively "3rdparty/msinttypes")
+            #t))))
+    (build-system perl-build-system)
+    (arguments
+     '(#:phases
+       (modify-phases %standard-phases
+         (replace 'configure
+           (lambda* (#:key inputs outputs #:allow-other-keys)
+             (let ((out        (assoc-ref outputs "out"))
+                   (pkg-config (assoc-ref inputs "pkg-config")))
+               (setenv "LDFLAGS" (string-append "-Wl,-rpath=" out "/lib"))
+               (invoke "perl" "Configure.pl"
+                       "--prefix" out
+                       "--pkgconfig" (string-append pkg-config "/bin/pkg-config")
+                       "--has-libtommath"
+                       "--has-libatomic_ops"
+                       "--has-libffi"
+                       "--has-libuv")))))))
+    (home-page "https://moarvm.org/")
+    ;; These should be inputs but moar.h can't find them when building rakudo
+    (propagated-inputs
+     `(("libatomic-ops" ,libatomic-ops)
+       ("libtommath" ,libtommath-1.0)
+       ("libuv" ,libuv)))
+    (inputs
+     `(("libffi" ,libffi)))
+    (native-inputs
+     `(("pkg-config" ,pkg-config)))
+    (synopsis "VM for NQP And Rakudo Perl 6")
+    (description
+     "Short for \"Metamodel On A Runtime\", MoarVM is a modern virtual machine
+built for the Rakudo Perl 6 compiler and the NQP Compiler Toolchain.  Highlights
+include:
+
+@itemize
+@item Great Unicode support, with strings represented at grapheme level
+@item Dynamic analysis of running code to identify hot functions and loops, and
+perform a range of optimizations, including type specialization and inlining
+@item Support for threads, a range of concurrency control constructs, and
+asynchronous sockets, timers, processes, and more
+@item Generational, parallel, garbage collection
+@item Support for numerous language features, including first class functions,
+exceptions, continuations, runtime loading of code, big integers and interfacing
+with native libraries.
+@end itemize")
+    (license license:artistic2.0)))
+
+(define-public nqp
+  (package
+    (name "nqp")
+    (version "2019.03")
+    (source
+      (origin
+        (method url-fetch)
+        (uri (string-append "https://rakudo.perl6.org/downloads/nqp/nqp-"
+                            version ".tar.gz"))
+        (sha256
+         (base32
+          "183zhll13fx416s3hkg4bkvib77kyr857h0nydgrl643fpacxp83"))
+        (modules '((guix build utils)))
+        (snippet
+         '(begin
+            (delete-file-recursively "3rdparty") #t))))
+    (build-system perl-build-system)
+    (arguments
+     '(#:phases
+       (modify-phases %standard-phases
+         (add-after 'patch-source-shebangs 'patch-more-shebangs
+           (lambda _
+             (substitute* '("tools/build/install-jvm-runner.pl.in"
+                            "tools/build/gen-js-cross-runner.pl"
+                            "tools/build/gen-js-runner.pl"
+                            "tools/build/install-js-runner.pl"
+                            "tools/build/install-moar-runner.pl"
+                            "tools/build/gen-moar-runner.pl"
+                            "t/nqp/111-spawnprocasync.t"
+                            "t/nqp/113-run-command.t")
+               (("/bin/sh") (which "sh")))
+             #t))
+         (add-after 'unpack 'patch-source-date
+           (lambda _
+             (substitute* "tools/build/gen-version.pl"
+               (("gmtime") "gmtime(0)"))
+             #t))
+         (add-after 'unpack 'remove-failing-test
+           ;; One subtest fails for unknown reasons
+           (lambda _
+             (delete-file "t/nqp/019-file-ops.t")
+             #t))
+         (replace 'configure
+           (lambda* (#:key inputs outputs #:allow-other-keys)
+             (let ((out  (assoc-ref outputs "out"))
+                   (moar (assoc-ref inputs "moarvm")))
+               (invoke "perl" "Configure.pl"
+                       "--backends=moar"
+                       "--with-moar" (string-append moar "/bin/moar")
+                       "--prefix" out)))))))
+    (inputs
+     `(("moarvm" ,moarvm)))
+    (home-page "https://github.com/perl6/nqp")
+    (synopsis "Not Quite Perl")
+    (description "This is \"Not Quite Perl\" -- a lightweight Perl 6-like
+environment for virtual machines.  The key feature of NQP is that it's designed
+to be a very small environment (as compared with, say, perl6 or Rakudo) and is
+focused on being a high-level way to create compilers and libraries for virtual
+machines like MoarVM, the JVM, and others.
+
+Unlike a full-fledged implementation of Perl 6, NQP strives to have as small a
+runtime footprint as it can, while still providing a Perl 6 object model and
+regular expression engine for the virtual machine.")
+    (license license:artistic2.0)))
+
+(define-public rakudo
+  (package
+    (name "rakudo")
+    (version "2019.03.1")
+    (source
+      (origin
+        (method url-fetch)
+        (uri (string-append "https://rakudo.perl6.org/downloads/rakudo/rakudo-"
+                            version ".tar.gz"))
+        (sha256
+         (base32
+          "1nllf69v8xr6v3kkj7pmryg11n5m3ajfkr7j72pvhrgnjy8lv3r1"))))
+    (build-system perl-build-system)
+    (arguments
+     '(#:phases
+       (modify-phases %standard-phases
+         (add-after 'unpack 'patch-source-date
+           (lambda _
+             (substitute* "tools/build/gen-version.pl"
+               (("gmtime") "gmtime(0)"))
+             #t))
+         (add-after 'patch-source-shebangs 'patch-more-shebangs
+           (lambda _
+             (substitute* '("tools/build/create-js-runner.pl"
+                            "tools/build/create-moar-runner.p6"
+                            "tools/build/create-jvm-runner.pl"
+                            "src/core/Proc.pm6")
+               (("/bin/sh") (which "sh")))
+             #t))
+         (replace 'configure
+           (lambda* (#:key inputs outputs #:allow-other-keys)
+             (let ((out (assoc-ref outputs "out"))
+                   (nqp (assoc-ref inputs "nqp")))
+               (invoke "perl" "./Configure.pl"
+                       "--backend=moar"
+                       "--with-nqp" (string-append nqp "/bin/nqp")
+                       "--prefix" out))))
+         ;; This is the recommended tool for distro maintainers to install perl6
+         ;; modules systemwide.  See: https://github.com/ugexe/zef/issues/117
+         (add-after 'install 'install-dist-tool
+           (lambda* (#:key outputs #:allow-other-keys)
+             (let* ((out  (assoc-ref outputs "out"))
+                    (dest (string-append out "/share/perl6/tools")))
+               (install-file "tools/install-dist.p6" dest)
+               (substitute* (string-append dest "/install-dist.p6")
+                 (("/usr/bin/env perl6")
+                  (string-append out "/bin/perl6"))))
+             #t)))))
+    (inputs
+     `(("moarvm" ,moarvm)
+       ("nqp" ,nqp)
+       ("openssl" ,openssl)))
+    (home-page "https://rakudo.org/")
+    (native-search-paths
+      (list (search-path-specification
+              (variable "PERL6LIB")
+              (separator ",")
+              (files '("share/perl6/lib"
+                       "share/perl6/site/lib"
+                       "share/perl6/vendor/lib")))))
+    (synopsis "Perl 6 Compiler")
+    (description "Rakudo Perl is a compiler that implements the Perl 6
+specification and runs on top of several virtual machines.")
+    (license license:artistic2.0)))
+
+(define-public perl6-grammar-debugger
+  ;; Last commit was September 2017
+  (let ((commit "0375008027c8caa216bd869476ce59ae09b2a702")
+        (revision "1"))
+    (package
+      (name "perl6-grammar-debugger")
+      (version (git-version "1.0.1" revision commit))
+      (source
+        (origin
+          (method git-fetch)
+          (uri (git-reference
+                 (url "https://github.com/jnthn/grammar-debugger")
+                 (commit commit)))
+          (file-name (git-file-name name version))
+          (sha256
+           (base32
+            "0y826z3m276n7ia810hgcb3div67nxmx125m2fzlc16994zd5vm5"))))
+      (build-system rakudo-build-system)
+      (propagated-inputs
+       `(("perl6-terminal-ansicolor" ,perl6-terminal-ansicolor)))
+      (home-page "https://github.com/jnthn/grammar-debugger")
+      (synopsis "Simple tracing and debugging support for Perl 6 grammars")
+      (description "This module provides a simple debugger for grammars.  Just
+@code{use} it: use @code{Grammar::Debugger;} and any grammar in the lexical
+scope of the use statement will automatically have debugging enabled. The
+debugger will break execution when you first enter the grammar, and provide a
+prompt.")
+      (license license:artistic2.0))))
+
+(define-public perl6-grammar-profiler-simple
+  ;; Last commit was June 2017
+  (let ((commit "c0aca5fab323b2974821dabd6b89330c609e0b7d")
+        (revision "1"))
+    (package
+      (name "perl6-grammar-profiler-simple")
+      (version (git-version "0.02" revision commit))
+      (source
+        (origin
+          (method git-fetch)
+          (uri (git-reference
+                 (url "https://github.com/perlpilot/Grammar-Profiler-Simple.git")
+                 (commit commit)))
+          (file-name (git-file-name name version))
+          (sha256
+           (base32
+            "1qcsa4lmcilp3vp0jng0hrgzyzxin9ayg2wjvkcd0k6h7djx9dff"))))
+      (build-system rakudo-build-system)
+      (arguments '(#:with-zef? #f))
+      (home-page "https://github.com/perlpilot/Grammar-Profiler-Simple")
+      (synopsis "Simple rule profiling for Perl 6 grammars")
+      (description "This module provides a simple profiler for Perl 6 grammars.
+To enable profiling simply add use @code{Grammar::Profiler::Simple;} to your
+code.  Any grammar in the lexical scope of the use statement will automatically
+have profiling information collected when the grammar is used.")
+      (license license:artistic2.0))))
+
+(define-public perl6-json
+  (package
+    (name "perl6-json")
+    (version "1.0")
+    (source
+      (origin
+        (method git-fetch)
+        (uri (git-reference
+               (url "https://github.com/moritz/json")
+               ;; The commit where 1.0 was "tagged"
+               (commit "a5ef8c179350dae44ce7fb1abb684fc62c1c2b99")))
+        (file-name (git-file-name name version))
+        (sha256
+         (base32
+          "1kzryxkqyr129rcckd4jh0dfxdgzv71qx8dpkpm1divbfjyknlay"))))
+    (build-system rakudo-build-system)
+    (arguments '(#:with-zef? #f))
+    (home-page "https://github.com/moritz/json")
+    (synopsis "A minimal JSON (de)serializer")
+    (description "This module is a simple Perl 6 module for serializing and
+deserializing JSON.")
+    (license license:artistic2.0)))
+
+(define-public perl6-json-class
+  (package
+    (name "perl6-json-class")
+    (version "0.0.12")
+    (source
+      (origin
+        (method git-fetch)
+        (uri (git-reference
+               (url "https://github.com/jonathanstowe/JSON-Class.git")
+               (commit (string-append "v" version))))
+        (file-name (git-file-name name version))
+        (sha256
+         (base32
+          "1zyzajc57j3m8q0nr72h9pw4w2nx92rafywlvysgphc5q9sb8np2"))))
+    (build-system rakudo-build-system)
+    (propagated-inputs
+     `(("perl6-json-marshal" ,perl6-json-marshal)
+       ("perl6-json-unmarshal" ,perl6-json-unmarshal)))
+    (native-inputs
+     `(("perl6-json-fast" ,perl6-json-fast)))
+    (home-page "https://github.com/jonathanstowe/JSON-Class")
+    (synopsis "Provide simple serialisation/deserialisation of objects to/from JSON")
+    (description "This is a simple role that provides methods to instantiate a
+class from a JSON string that (hopefully,) represents it, and to serialise an
+object of the class to a JSON string.  The JSON created from an instance should
+round trip to a new instance with the same values for the @quot{public
+attributes}.  @quot{Private} attributes (that is ones without accessors,) will
+be ignored for both serialisation and de-serialisation.  The exact behaviour
+depends on that of @code{JSON::Marshal} and @code{JSON::Unmarshal} respectively.")
+    (license license:artistic2.0)))
+
+(define-public perl6-json-fast
+  (package
+    (name "perl6-json-fast")
+    (version "0.8")
+    (source
+      (origin
+        (method git-fetch)
+        (uri (git-reference
+               (url "https://github.com/timo/json_fast.git")
+               (commit version)))
+        (file-name (git-file-name name version))
+        (sha256
+         (base32
+          "1fif081gdxdnja14vkj523p9dyzdcdj81lmjv9fvfazvpagb6dg2"))))
+    (build-system rakudo-build-system)
+    (arguments '(#:with-zef? #f))
+    (home-page "https://github.com/timo/json_fast")
+    (synopsis "Perl6 json parser")
+    (description "A naive imperative json parser in pure perl6 (but with direct
+access to @code{nqp::} ops), to evaluate performance against @code{JSON::Tiny}.
+It is a drop-in replacement for @code{JSON::Tiny}'s from-json and to-json subs,
+but it offers a few extra features.")
+    (license license:artistic2.0)))
+
+(define-public perl6-json-marshal
+  (package
+    (name "perl6-json-marshal")
+    (version "0.0.16")
+    (source
+      (origin
+        (method git-fetch)
+        (uri (git-reference
+               (url "https://github.com/jonathanstowe/JSON-Marshal.git")
+               (commit (string-append "v" version))))
+        (file-name (git-file-name name version))
+        (sha256
+         (base32
+          "0qy7j83h6gjzyyv74ncd92cd9h45rv8diaz3vldiv3b6fqwz4c6i"))))
+    (build-system rakudo-build-system)
+    (propagated-inputs
+     `(("perl6-json-fast" ,perl6-json-fast)
+       ("perl6-json-name" ,perl6-json-name)))
+    (native-inputs
+     `(("perl6-json-fast" ,perl6-json-fast)))
+    (home-page "https://github.com/jonathanstowe/JSON-Marshal")
+    (synopsis "Simple serialisation of objects to JSON")
+    (description "This library provides a single exported subroutine to create
+a JSON representation of an object.  It should round trip back into an object
+of the same class using @code{JSON::Unmarshal}.")
+    (license license:artistic2.0)))
+
+(define-public perl6-json-name
+  (package
+    (name "perl6-json-name")
+    (version "0.0.3")
+    (source
+      (origin
+        (method git-fetch)
+        (uri (git-reference
+               (url "https://github.com/jonathanstowe/JSON-Name.git")
+               (commit (string-append "v" version))))
+        (file-name (git-file-name name version))
+        (sha256
+         (base32
+          "130qwdpbj5qdlsdz05y0rksd79lzbq79scy47n6lnf21b0hz1qjc"))))
+    (build-system rakudo-build-system)
+    (arguments '(#:with-zef? #f))
+    (home-page "https://github.com/jonathanstowe/JSON-Name")
+    (synopsis "Provides a trait to store an alternative JSON Name")
+    (description "This is released as a dependency of @code{JSON::Marshal} and
+@code{JSON::Unmarshal} in order to save duplication, it is intended to store a
+separate JSON name for an attribute where the name of the JSON attribute might be
+changed, either for aesthetic reasons or the name is not a valid Perl identifier.
+It will of course also be needed in classes thar are going to use
+@code{JSON::Marshal} or @code{JSON::Unmarshal} for serialisation/de-serialisation.")
+    (license license:artistic2.0)))
+
+(define-public perl6-json-unmarshal
+  ;; Last commit was May 2017
+  (let ((commit "e1b6288c5f3165058f36c0f4e171cdf2dfd640da")
+        (revision "1"))
+    (package
+      (name "perl6-json-unmarshal")
+      (version (git-version "0.0.0" revision commit))
+      (source
+        (origin
+          (method git-fetch)
+          (uri (git-reference
+                 (url "https://github.com/tadzik/JSON-Unmarshal.git")
+                 (commit commit)))
+        (file-name (git-file-name name version))
+        (sha256
+         (base32
+          "14azsmzmwdn8k0gqcpvballharcvzylmlyrx2wmv4kpqfnz29fjc"))))
+      (build-system rakudo-build-system)
+      (propagated-inputs
+       `(("perl6-json-fast" ,perl6-json-fast)
+         ("perl6-json-name" ,perl6-json-name)))
+      (home-page "https://github.com/tadzik/JSON-Unmarshal")
+      (synopsis "Make JSON from an Object")
+      (description "This library provides a single exported subroutine to
+create an object from a JSON representation of an object.")
+      (license license:expat))))
+
+(define-public perl6-license-spdx
+  (package
+    (name "perl6-license-spdx")
+    (version "3.4.0")
+    (source
+      (origin
+        (method git-fetch)
+        (uri (git-reference
+               (url "https://github.com/jonathanstowe/License-SPDX")
+               (commit (string-append "v" version))))
+        (file-name (git-file-name name version))
+        (sha256
+         (base32
+          "0dl263c3fbxk001gm5fisrzqz1dx182ipaa0x2qva2gxvl075xm8"))))
+    (build-system rakudo-build-system)
+    (propagated-inputs
+     `(("perl6-json-class" ,perl6-json-class)))
+    (home-page "https://github.com/jonathanstowe/License-SPDX")
+    (synopsis "Abstraction over the SPDX License List")
+    (description "This provides an abstraction over the SPDX License List as
+provided in JSON format.  Its primary raison d'être is to help the licence
+checking of @code{Test::META} and to allow for the warning about deprecated
+licences therein.")
+    (license license:artistic2.0)))
+
+(define-public perl6-meta6
+  (package
+    (name "perl6-meta6")
+    (version "0.0.23")
+    (source
+      (origin
+        (method git-fetch)
+        (uri (git-reference
+               (url "https://github.com/jonathanstowe/META6.git")
+               (commit (string-append "v" version))))
+        (file-name (git-file-name name version))
+        (sha256
+         (base32
+          "1xnlaamfbdlfb2zidim3bbc4mawsrg6qxhxi6gbld46z1cyry1cw"))))
+    (build-system rakudo-build-system)
+    (propagated-inputs
+     `(("perl6-json-class" ,perl6-json-class)))
+    (native-inputs
+     `(("perl6-json-fast" ,perl6-json-fast)))
+    (home-page "https://github.com/jonathanstowe/META6")
+    (synopsis "Do things with Perl 6 [META files]")
+    (description "This provides a representation of the Perl 6 META files
+specification - the META file data can be read, created, parsed and written in a
+manner that is conformant with the specification.
+
+Where they are known about it also makes allowance for @quot{customary} usage in
+existing software (such as installers and so forth.)
+
+The intent of this is allow the generation and testing of META files for module
+authors, so it can provide meta-information whether the attributes are mandatory
+as per the spec and where known the places that @quot{customary} attributes are
+used.")
+    (license license:artistic2.0)))
+
+(define-public perl6-mime-base64
+  (package
+    (name "perl6-mime-base64")
+    (version "1.2.1")
+    (source
+      (origin
+        (method git-fetch)
+        (uri (git-reference
+               (url "https://github.com/perl6/Perl6-MIME-Base64")
+               (commit (string-append "v" version))))
+        (file-name (git-file-name name version))
+        (sha256
+         (base32
+          "0l67m8mvz3gxml425sd1ggfnhzh4lf754k7w8fngfr453s6lsza1"))))
+    (build-system rakudo-build-system)
+    (arguments '(#:with-zef? #f))
+    (home-page "https://github.com/perl6/Perl6-MIME-Base64")
+    (synopsis "Encoding and decoding Base64 ASCII strings")
+    (description "This Perl 6 module implements encoding and decoding to and
+from base64.")
+    (license license:artistic2.0)))
+
+(define-public perl6-oo-monitors
+  (package
+    (name "perl6-oo-monitors")
+    (version "1.1")
+    (source
+      (origin
+        (method git-fetch)
+        (uri (git-reference
+               (url "https://github.com/jnthn/oo-monitors")
+               ;; The commit where 1.1 was "tagged"
+               (commit "494db3a3852854f30a80c9bd1489a7d5e429e7c5")))
+        (file-name (git-file-name name version))
+        (sha256
+         (base32
+          "1sbw2x54wwjjanghjnc7ipmplaw1srvbrphsdv4ym6cipnbmbj9x"))))
+    (build-system rakudo-build-system)
+    (arguments '(#:with-zef? #f))
+    (home-page "https://github.com/jnthn/oo-monitors")
+    (synopsis "Monitors with condition variables for Perl 6")
+    (description "A monitor provides per-instance mutual exclusion for objects.
+This means that for a given object instance, only one thread can ever be inside
+its methods at a time.  This is achieved by a lock being associated with each
+object.  The lock is acquired automatically at the entry to each method in the
+monitor.  Condition variables are also supported.")
+    (license license:artistic2.0)))
+
+(define-public perl6-svg
+  ;; Latest commit, basically unchanged since August 2015
+  (let ((commit "07190c0602aa276e5319f06aa0012452dbff3582")
+        (revision "1"))
+    (package
+      (name "perl6-svg")
+      (version (git-version "0.0.0" revision commit))
+      (source
+        (origin
+          (method git-fetch)
+          (uri (git-reference
+                 (url "https://github.com/moritz/svg")
+                 (commit commit)))
+          (file-name (git-file-name name version))
+          (sha256
+           (base32
+            "0mkjdhg7ajksdn61n8fqhyzfd7ly9myazsvpsm02a5c2q73hdygg"))))
+      (build-system rakudo-build-system)
+      (propagated-inputs
+       `(("perl6-xml-writer" ,perl6-xml-writer)))
+      (home-page "https://github.com/moritz/svg")
+      (synopsis "Perl 6 module to generate SVG")
+      (description "This is a Perl 6 module that makes it easy to write
+@dfn{Scalable Vector Graphic files} (SVG).  Right now it is a shallow wrapper
+around @code{XML::Writer}, adding only the xmlns attributes that identifies an
+XML file as SVG.")
+      (license license:artistic2.0))))
+
+(define-public perl6-svg-plot
+  ;; Latest commit
+  (let ((commit "062570a78fd38c3c6baba29dfe2fbb8ca014f4de")
+        (revision "1"))
+    (package
+      (name "perl6-svg-plot")
+      (version (git-version "0.0.0" revision commit))
+      (source
+        (origin
+          (method git-fetch)
+          (uri (git-reference
+                 (url "https://github.com/moritz/svg-plot")
+                 (commit commit)))
+          (file-name (git-file-name name version))
+          (sha256
+           (base32
+            "095ga5hbg92jnmczxvhk1hjz14yr334zyf8cph4w5w5frcza44my"))))
+      (build-system rakudo-build-system)
+      (propagated-inputs
+       `(("perl6-svg" ,perl6-svg)))
+      (home-page "https://github.com/moritz/svg-plot")
+      (synopsis "Perl 6 charting and plotting library that produces SVG output")
+      (description "@code{SVG::Plot} is a simple 2D chart plotter for Perl 6.
+It currently supports bars, stacked bars, lines and points (both equally spaced
+with optional labels, or xy plots).")
+      (license license:artistic2.0))))
+
+(define-public perl6-tap-harness
+  (package
+    (name "perl6-tap-harness")
+    (version "0.0.7")
+    (source
+      (origin
+        (method git-fetch)
+        (uri (git-reference
+               (url "https://github.com/perl6/tap-harness6.git")
+               (commit (string-append "v" version))))
+        (file-name (git-file-name name version))
+        (sha256
+         (base32
+          "1lig8i0my3fgqvlay9532xslbf3iis2d7wz89gniwvwqffi2kh6r"))))
+    (build-system rakudo-build-system)
+    (arguments
+     '(#:with-zef? #f
+       #:with-prove6? #f
+       #:phases
+       (modify-phases %standard-phases
+         (replace 'check
+           (lambda _
+             (invoke "perl6" "-Ilib" "bin/prove6" "-l" "t"))))))
+    (home-page "https://github.com/perl6/tap-harness6/")
+    (synopsis "TAP harness for perl6")
+    (description "This module provides the @command{prove6} command which runs a
+TAP based test suite and prints a report.  The @command{prove6} command is a
+minimal wrapper around an instance of this module.")
+    (license license:artistic2.0)))
+
+(define-public perl6-terminal-ansicolor
+  (package
+    (name "perl6-terminal-ansicolor")
+    (version "0.5")
+    (source
+      (origin
+        (method git-fetch)
+        (uri (git-reference
+               (url "https://github.com/tadzik/Terminal-ANSIColor.git")
+               ;; The commit where 0.5 was "tagged"
+               (commit "edded4a7116ce11cbc9fb5a83669c7ba119d0212")))
+        (file-name (git-file-name name version))
+        (sha256
+         (base32
+          "1apm999azkyg5s35gid12wq019aqnvzrkz7qjmipd74mdxgr00x7"))))
+    (build-system rakudo-build-system)
+    (arguments '(#:with-zef? #f))
+    (home-page "https://github.com/tadzik/Terminal-ANSIColor")
+    (synopsis "Colorize terminal output")
+    (description "This is a @code{Terminal::ANSIColor} module for Perl 6.")
+    (license license:expat)))
+
+(define-public perl6-test-meta
+  (package
+    (name "perl6-test-meta")
+    (version "0.0.14")
+    (source
+      (origin
+        (method git-fetch)
+        (uri (git-reference
+               (url "https://github.com/jonathanstowe/Test-META")
+               (commit (string-append "v" version))))
+        (file-name (git-file-name name version))
+        (sha256
+         (base32
+          "1mzrglb7lbiy5h9dlc7dyhvv9gppxmdmpmrv6nzbd695jzr38bri"))))
+    (build-system rakudo-build-system)
+    (propagated-inputs
+     `(("perl6-meta6" ,perl6-meta6)
+       ("perl6-uri" ,perl6-uri)))
+    (home-page "https://github.com/jonathanstowe/Test-META")
+    (synopsis "Test a distributions META file")
+    (description "This provides a simple mechanism for module authors to have
+some confidence that they have a working distribution META description file.")
+    (license license:artistic2.0)))
+
+(define-public perl6-test-mock
+  (package
+    (name "perl6-test-mock")
+    (version "1.5")
+    (source
+      (origin
+        (method git-fetch)
+        (uri (git-reference
+               (url "https://github.com/jnthn/test-mock")
+               ;; The commit where 1.5 was "tagged"
+               (commit "6eddb42f73f40b9ac29c14badb41ce4a04d876f2")))
+        (file-name (git-file-name name version))
+        (sha256
+         (base32
+          "07yr3qimc8fl29p23562ayj2j9h53madcnf9sgqvgf2kcprh0zd2"))))
+    (build-system rakudo-build-system)
+    (propagated-inputs
+     `(("perl6-oo-monitors" ,perl6-oo-monitors)))
+    (home-page "https://github.com/jnthn/test-mock")
+    (synopsis "Module for simply generating and checking mock objects")
+    (description "@code{Test::Mock} is a module that works alongside the
+standard Test module to help you write tests when you want to verify what
+methods are called on an object, while still having calls to undefined methods
+die.  You get started just as normal with the test file, but also add a use
+statement for @code{Test::Mock}.")
+    (license license:artistic2.0)))
+
+(define-public perl6-uri
+  (package
+    (name "perl6-uri")
+    (version "0.1.5")
+    (source
+      (origin
+        (method git-fetch)
+        (uri (git-reference
+               (url "https://github.com/perl6-community-modules/uri.git")
+               (commit version)))
+        (file-name (git-file-name name version))
+        (sha256
+         (base32
+          "0h318g75jqn2ckw051g35iqyfxz1mps0jyg5z6pd857y3kacbkpl"))))
+    (build-system rakudo-build-system)
+    (arguments '(#:with-zef? #f))
+    (home-page "https://github.com/perl6-community-modules/uri")
+    (synopsis "URI implementation using Perl 6")
+    (description "A URI implementation using Perl 6 grammars to implement RFC
+3986 BNF.  Currently only implements parsing.  Includes @code{URI::Escape} to
+(un?)escape characters that aren't otherwise allowed in a URI with % and a hex
+character numbering.")
+    (license license:artistic2.0)))
+
+(define-public perl6-xml-writer
+  ;; Last commit was May 2017
+  (let ((commit "4d30a9d8e06033ca97387971b653817becd5a759")
+        (revision "1"))
+    (package
+      (name "perl6-xml-writer")
+      (version (git-version "0.0.0" revision commit))
+      (source
+        (origin
+          (method git-fetch)
+          (uri (git-reference
+                 (url "https://github.com/masak/xml-writer")
+                 (commit commit)))
+          (file-name (git-file-name name version))
+          (sha256
+           (base32
+            "1kwrf7akp70kyzw1b90khp71a6hpilihwndy2jsjpffcd4hd4m4z"))))
+      (build-system rakudo-build-system)
+      (arguments '(#:with-zef? #f))
+      (home-page "https://github.com/masak/xml-writer")
+      (synopsis "Perl 6 module to generate XML")
+      (description "@code{XML::Writer} is a module for creating XML in Perl 6.")
+      (license license:artistic2.0))))
+
+(define-public perl6-zef
+  (package
+    (name "perl6-zef")
+    (version "0.6.7")
+    (source
+      (origin
+        (method git-fetch)
+        (uri (git-reference
+               (url "https://github.com/ugexe/zef.git")
+               (commit (string-append "v" version))))
+        (file-name (git-file-name name version))
+        (sha256
+         (base32
+          "07n7g1xw2c4g860rs890gx85vyhdq0ysgwbrnzw6q905jph2bkv7"))))
+    (build-system rakudo-build-system)
+    (arguments
+     '(#:with-zef? #f
+       #:phases
+       (modify-phases %standard-phases
+         (replace 'check
+           (lambda _
+             (setenv "HOME" "/tmp")
+             (invoke "perl6" "-I." "bin/zef" "--debug"
+                     "--tap-harness" "test" "."))))))
+    (home-page "https://github.com/ugexe/zef")
+    (synopsis "Perl6 Module Management")
+    (description "Zef is a Perl 6 package (module) manager.  It can be used to
+download and install Perl 6 modules in your home directory or as a system-wide
+module.")
+    (license license:artistic2.0)))