Merge branch 'staging'

Conflicts:
	gnu/packages/admin.scm
	gnu/packages/commencement.scm
	gnu/packages/gdb.scm
	gnu/packages/llvm.scm
	gnu/packages/package-management.scm
	gnu/packages/tls.scm

1 files changed, 2374 insertions, 0 deletions

diff --git a/gnu/packages/crates-graphics.scm b/gnu/packages/crates-graphics.scm
new file mode 100644
index 0000000000..9193479092
--- /dev/null
+++ b/gnu/packages/crates-graphics.scm
@@ -0,0 +1,2374 @@
+;;; GNU Guix --- Functional package management for GNU
+;;; Copyright © 2020 Valentin Ignatev <valentignatev@gmail.com>
+;;; Copyright © 2020 Hartmut Goebel <h.goebel@crazy-compilers.com>
+;;; Copyright © 2020 Efraim Flashner <efraim@flashner.co.il>
+;;; Copyright © 2020 John Soo <jsoo1@asu.edu>
+;;; Copyright © 2020 Gabriel Arazas <foo.dogsquared@gmail.com>
+;;; Copyright © 2020 Raghav Gururajan <raghavgururajan@disroot.org>
+;;; Copyright © 2020 Danny Milosavljevic <dannym@scratchpost.org>
+;;; Copyright © 2020 Tobias Geerinckx-Rice <me@tobias.gr>
+;;; Copyright © 2020 Leo Famulari <leo@famulari.name>
+;;;
+;;; 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 crates-graphics)
+  #:use-module (guix build-system cargo)
+  #:use-module (guix download)
+  #:use-module ((guix licenses) #:prefix license:)
+  #:use-module (guix packages)
+  #:use-module (gnu packages)
+  #:use-module (gnu packages crates-io)
+  #:use-module (gnu packages freedesktop)
+  #:use-module (gnu packages llvm)
+  #:use-module (gnu packages pkg-config)
+  #:use-module (gnu packages python)
+  #:use-module (gnu packages video))
+
+;;;
+;;; Please: Try to add new module packages in alphabetic order.
+
+(define-public rust-andrew-0.2
+  (package
+    (name "rust-andrew")
+    (version "0.2.1")
+    (source
+     (origin
+       (method url-fetch)
+       (uri (crate-uri "andrew" version))
+       (file-name
+        (string-append name "-" version ".tar.gz"))
+       (sha256
+        (base32
+         "0pmklwcwy8g1jras46fz8xcny779zfqpg4riksrbdhkjk3w0jzwv"))))
+    (build-system cargo-build-system)
+    (arguments
+     `(#:cargo-inputs
+       (("rust-bitflags" ,rust-bitflags-1)
+        ("rust-line-drawing" ,rust-line-drawing-0.7)
+        ("rust-rusttype" ,rust-rusttype-0.7)
+        ("rust-walkdir" ,rust-walkdir-2)
+        ("rust-xdg" ,rust-xdg-2.2)
+        ("rust-xml-rs" ,rust-xml-rs-0.8))
+       #:cargo-development-inputs
+       (("rust-smithay-client-toolkit" ,rust-smithay-client-toolkit-0.4))))
+    (inputs
+     `(("wayland" ,wayland)))
+    (home-page "https://github.com/trimental/andrew")
+    (synopsis "Provides convenient drawing of objects to buffers")
+    (description
+     "The @code{andrew} crate provides convenient drawing of objects such as
+shapes, lines and text to buffers.")
+    (license license:expat)))
+
+(define-public rust-ansi-colours-1
+  (package
+    (name "rust-ansi-colours")
+    (version "1.0.1")
+    (source
+      (origin
+        (method url-fetch)
+        (uri (crate-uri "ansi_colours" version))
+        (file-name
+         (string-append name "-" version ".tar.gz"))
+        (sha256
+         (base32
+          "1dnqmpk68mzvncj37jlv0362kdgsgjxg010c6psagimgh4m303qx"))))
+    (build-system cargo-build-system)
+    (arguments
+     `(#:cargo-inputs
+       (("rust-cc" ,rust-cc-1))
+       #:cargo-development-inputs
+       (("rust-delta-e" ,rust-delta-e-0.2)
+        ("rust-lab" ,rust-lab-0.4))))
+    (home-page "https://github.com/mina86/ansi_colours")
+    (synopsis "Palette converter between true-colour and ANSI terminal")
+    (description
+     "@code{ansi_colours} is a library which converts between 24-bit sRGB
+colours and 8-bit colour palette used by ANSI terminals such as @code{xterm} on
+@code{rxvt-unicode} in 256-colour mode.
+The most common use case is when using 24-bit colours in a terminal emulator
+which only support 8-bit colour palette.  This package allows true-colours to be
+approximated by values supported by the terminal.")
+    (license license:lgpl3+)))
+
+(define-public rust-ansi-term-0.12
+  (package
+    (name "rust-ansi-term")
+    (version "0.12.1")
+    (source
+      (origin
+        (method url-fetch)
+        (uri (crate-uri "ansi_term" version))
+        (file-name (string-append name "-" version ".crate"))
+        (sha256
+         (base32
+          "1ljmkbilxgmhavxvxqa7qvm6f3fjggi7q2l3a72q9x0cxjvrnanm"))))
+    (build-system cargo-build-system)
+    (arguments
+     `(#:cargo-inputs
+       (("rust-serde" ,rust-serde-1)
+        ("rust-winapi" ,rust-winapi-0.3))
+       #:cargo-development-inputs
+       (("rust-doc-comment" ,rust-doc-comment-0.3)
+        ("rust-regex" ,rust-regex-1)
+        ("rust-serde-json" ,rust-serde-json-1))))
+    (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.")
+    (license license:expat)))
+
+(define-public rust-ansi-term-0.11
+  (package
+    (inherit rust-ansi-term-0.12)
+    (name "rust-ansi-term")
+    (version "0.11.0")
+    (source
+      (origin
+        (method url-fetch)
+        (uri (crate-uri "ansi_term" version))
+        (file-name (string-append name "-" version ".crate"))
+        (sha256
+         (base32
+          "16wpvrghvd0353584i1idnsgm0r3vchg8fyrm0x8ayv1rgvbljgf"))))
+    (arguments
+     `(#:skip-build? #t
+       #:cargo-inputs
+       (("rust-winapi" ,rust-winapi-0.3))))))
+
+(define-public rust-ansi-term-0.9
+  (package
+    (inherit rust-ansi-term-0.11)
+    (name "rust-ansi-term")
+    (version "0.9.0")
+    (source
+     (origin
+       (method url-fetch)
+       (uri (crate-uri "ansi_term" version))
+       (file-name
+        (string-append name "-" version ".tar.gz"))
+       (sha256
+        (base32
+         "1xif1bh938qpfc3d0f9xgidibpm65xix11w9gszwqnia00q7rb13"))))
+    (arguments `())))
+
+(define-public rust-aom-sys-0.1
+  (package
+    (name "rust-aom-sys")
+    (version "0.1.4")
+    (source
+      (origin
+        (method url-fetch)
+        (uri (crate-uri "aom-sys" version))
+        (file-name
+         (string-append name "-" version ".tar.gz"))
+        (sha256
+         (base32
+          "1bqcpkycv1d67r6jcl9npfbw6rkl829rdq9w6vlpb0rjqxp0xzsn"))))
+    (build-system cargo-build-system)
+    (arguments
+     `(#:cargo-inputs
+       (("rust-bindgen" ,rust-bindgen-0.53)
+        ("rust-metadeps" ,rust-metadeps-1.1))
+       #: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)))))
+    (native-inputs
+     `(("pkg-config" ,pkg-config)))
+    (inputs
+     `(("libaom" ,libaom)
+       ("libclang" ,clang)
+       ("llvm" ,llvm)))
+    (home-page "https://github.com/rust-av/aom-rs")
+    (synopsis "FFI bindings to aom")
+    (description "This package provides FFI bindings to aom.")
+    (license license:expat)))
+
+(define-public rust-ascii-canvas-2
+  (package
+    (name "rust-ascii-canvas")
+    (version "2.0.0")
+    (source
+     (origin
+       (method url-fetch)
+       (uri (crate-uri "ascii-canvas" version))
+       (file-name (string-append name "-" version ".tar.gz"))
+       (sha256
+        (base32 "0a9s8vrbc5jr6ry5ygjyfqmbs9gyya1v6dsxzsczpai8z4nvg3pz"))))
+    (build-system cargo-build-system)
+    (arguments
+     `(#:skip-build? #t  ;; TODO: failes due to an unresolved import
+       #:cargo-inputs
+       (("rust-term" ,rust-term-0.5))))
+    (home-page "https://github.com/nikomatsakis/ascii-canvas")
+    (synopsis "Simple canvas for drawing lines and styled text and emitting to
+the terminal")
+    (description "@code{ASCII} canvas is a simple Rust library that allows you
+to draw lines and colored text and then write them to the terminal.  It uses
+the term library to handle the ANSI nonsense and hence it works on Windows,
+Mac, and Unix.")
+    (license (list license:asl2.0 license:expat))))
+
+(define-public rust-cgl-0.3
+  (package
+    (name "rust-cgl")
+    (version "0.3.2")
+    (source
+     (origin
+       (method url-fetch)
+       (uri (crate-uri "cgl" version))
+       (file-name
+        (string-append name "-" version ".tar.gz"))
+       (sha256
+        (base32
+         "1zs7skrsyrsm759vfy2cygkx52fx91b567a12bpaz1sf4d8hbv8c"))))
+    (build-system cargo-build-system)
+    (arguments
+     `(#:skip-build? #t     ; only available on macOS
+       #:cargo-inputs (("rust-libc" ,rust-libc-0.2))))
+    (home-page "https://github.com/servo/cgl-rs")
+    (synopsis "Rust bindings for CGL on Mac")
+    (description "Rust bindings for CGL on Mac.")
+    (license (list license:expat license:asl2.0))))
+
+(define-public rust-cgl-0.2
+  (package
+    (inherit rust-cgl-0.3)
+    (name "rust-cgl")
+    (version "0.2.3")
+    (source
+     (origin
+       (method url-fetch)
+       (uri (crate-uri "cgl" version))
+       (file-name
+        (string-append name "-" version ".tar.gz"))
+       (sha256
+        (base32
+         "0j8ayr8pbwvyv6l8r7m5z197rs3pqn97085w9j4rfn7yfh5yrrsm"))))
+    (arguments
+     `(#:skip-build? #t     ; only available on macOS
+       #:cargo-inputs
+       (("rust-gleam" ,rust-gleam-0.6)
+        ("rust-libc" ,rust-libc-0.2))))))
+
+(define-public rust-cgmath-0.17
+  (package
+    (name "rust-cgmath")
+    (version "0.17.0")
+    (source
+     (origin
+       (method url-fetch)
+       (uri (crate-uri "cgmath" version))
+       (file-name
+        (string-append name "-" version ".tar.gz"))
+       (sha256
+        (base32
+         "1rvgila6ivr0dh1bxza450a4yfwdi2pwj3h1vnwg0jy4xk6l8f98"))))
+    (build-system cargo-build-system)
+    (arguments
+     `(#:skip-build? #t     ; Crate won't build without glium.
+       #:cargo-inputs
+       (("rust-approx" ,rust-approx-0.3)
+        ("rust-mint" ,rust-mint-0.5)
+        ("rust-num-traits" ,rust-num-traits-0.2)
+        ("rust-rand" ,rust-rand-0.6)
+        ("rust-serde" ,rust-serde-1)
+        ("rust-simd" ,rust-simd-0.2))
+       #:cargo-development-inputs
+       (;("rust-glium" ,rust-glium-0.23)
+        ("rust-serde-json" ,rust-serde-json-1))))
+    (home-page "https://github.com/brendanzab/cgmath")
+    (synopsis "Linear algebra and mathematics library")
+    (description
+     "This package provides a linear algebra and mathematics library
+for computer graphics.")
+    (license license:asl2.0)))
+
+(define-public rust-cgmath-0.16
+  (package
+    (inherit rust-cgmath-0.17)
+    (name "rust-cgmath")
+    (version "0.16.1")
+    (source
+     (origin
+       (method url-fetch)
+       (uri (crate-uri "cgmath" version))
+       (file-name
+        (string-append name "-" version ".tar.gz"))
+       (sha256
+        (base32
+         "07754c03v3srzf64ghsl3fggrdi4kjy6l3vyq2d2wfjfixybb934"))))
+    (arguments
+     `(#:skip-build? #t     ; Crate won't build without glium.
+       #:cargo-inputs
+       (("rust-approx" ,rust-approx-0.1)
+        ("rust-mint" ,rust-mint-0.5)
+        ("rust-num-traits" ,rust-num-traits-0.1)
+        ("rust-rand" ,rust-rand-0.4)
+        ("rust-serde" ,rust-serde-1)
+        ("rust-simd" ,rust-simd-0.2))
+       #:cargo-development-inputs
+       (;("rust-glium" ,rust-glium-0.19)
+        ("rust-serde-json" ,rust-serde-json-1))))))
+
+(define-public rust-core-graphics-0.17
+  (package
+    (name "rust-core-graphics")
+    (version "0.17.3")
+    (source
+     (origin
+       (method url-fetch)
+       (uri (crate-uri "core-graphics" version))
+       (file-name
+        (string-append name "-" version ".tar.gz"))
+       (sha256
+        (base32
+         "1acm3vygngnilzlr6klym5ywh7kfzh2xxrh2l41152hwmdl0jyan"))))
+    (build-system cargo-build-system)
+    (arguments
+     `(#:skip-build? #t     ; only for macOS
+       #:cargo-inputs
+       (("rust-bitflags" ,rust-bitflags-1)
+        ("rust-core-foundation" ,rust-core-foundation-0.6)
+        ("rust-foreign-types" ,rust-foreign-types-0.3)
+        ("rust-libc" ,rust-libc-0.2))))
+    (home-page "https://github.com/servo/core-graphics-rs")
+    (synopsis "Bindings to Core Graphics for macOS")
+    (description
+     "Bindings to Core Graphics for macOS.")
+    (license (list license:expat license:asl2.0))))
+
+(define-public rust-core-video-sys-0.1
+  (package
+    (name "rust-core-video-sys")
+    (version "0.1.3")
+    (source
+     (origin
+       (method url-fetch)
+       (uri (crate-uri "core-video-sys" version))
+       (file-name
+        (string-append name "-" version ".tar.gz"))
+       (sha256
+        (base32
+         "1l59cg88482hkl95ssb30ac9x65hpbdsmxz9s5r6y222jlhnbh4d"))))
+    (build-system cargo-build-system)
+    (arguments
+     `(#:skip-build? #t     ; only for macOS
+       #:cargo-inputs
+       (("rust-cfg-if" ,rust-cfg-if-0.1)
+        ("rust-core-foundation-sys" ,rust-core-foundation-sys-0.6)
+        ("rust-core-graphics" ,rust-core-graphics-0.17)
+        ("rust-libc" ,rust-libc-0.2)
+        ("rust-metal" ,rust-metal-0.14)
+        ("rust-objc" ,rust-objc-0.2))))
+    (home-page "https://github.com/luozijun/rust-core-video-sys")
+    (synopsis "Bindings to CoreVideo.framework for macOS and iOS")
+    (description "Bindings to CoreVideo.framework for macOS and iOS.")
+    (license license:expat)))
+
+(define-public rust-dav1d-sys-0.3
+  (package
+    (name "rust-dav1d-sys")
+    (version "0.3.2")
+    (source
+      (origin
+        (method url-fetch)
+        (uri (crate-uri "dav1d-sys" version))
+        (file-name
+         (string-append name "-" version ".tar.gz"))
+        (sha256
+         (base32
+          "1jdxhnlxcml6jd67lx78ifzkn1xm18zfk4li7vjdh3fa61i073kx"))))
+    (build-system cargo-build-system)
+    (arguments
+     `(#:cargo-inputs
+       (("rust-bindgen" ,rust-bindgen-0.54)
+        ("rust-metadeps" ,rust-metadeps-1.1))
+       #: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
+     `(("dav1d" ,dav1d)
+       ("pkg-config" ,pkg-config)
+       ("libclang" ,clang)
+       ("llvm" ,llvm)))
+    (home-page "https://github.com/rust-av/dav1d-rs")
+    (synopsis "FFI bindings to dav1d")
+    (description "This package provides FFI bindings to dav1d.")
+    (license license:expat)))
+
+(define-public rust-euclid-0.20
+  (package
+    (name "rust-euclid")
+    (version "0.20.10")
+    (source
+     (origin
+       (method url-fetch)
+       (uri (crate-uri "euclid" version))
+       (file-name
+        (string-append name "-" version ".tar.gz"))
+       (sha256
+        (base32
+         "0c3hbl0kvc53k6nws0v9d46hi0giza1j079sqx2bgl4wfw65nshc"))))
+    (build-system cargo-build-system)
+    (arguments
+     `(#:cargo-inputs
+       (("rust-mint" ,rust-mint-0.5)
+        ("rust-num-traits" ,rust-num-traits-0.2)
+        ("rust-serde" ,rust-serde-1))
+       #:cargo-development-inputs
+       (("rust-serde-test" ,rust-serde-test-1))))
+    (home-page "https://github.com/servo/euclid")
+    (synopsis "Geometry primitives")
+    (description "Geometry primitives written in Rust.")
+    (license (list license:expat license:asl2.0))))
+
+(define-public rust-gfx-0.18
+  (package
+    (name "rust-gfx")
+    (version "0.18.2")
+    (source
+      (origin
+        (method url-fetch)
+        (uri (crate-uri "gfx" version))
+        (file-name
+         (string-append name "-" version ".tar.gz"))
+        (sha256
+         (base32
+          "0nqmxqi3x4ni0g78g77a6aldrv8cfvzhnpqhxyd2ap4aa3wldph1"))))
+    (build-system cargo-build-system)
+    (arguments
+     `(#:skip-build? #t
+       #:cargo-inputs
+       (("rust-log" ,rust-log-0.4)
+        ("rust-mint" ,rust-mint-0.5)
+        ("rust-draw-state" ,rust-draw-state-0.8)
+        ("rust-gfx-core" ,rust-gfx-core-0.9))))
+    (home-page "https://github.com/gfx-rs/gfx")
+    (synopsis "High-performance, bindless graphics API")
+    (description
+     "This package provides a high-performance, bindless graphics API.")
+    (license license:asl2.0)))
+
+(define-public rust-gfx-core-0.9
+  (package
+    (name "rust-gfx-core")
+    (version "0.9.2")
+    (source
+      (origin
+        (method url-fetch)
+        (uri (crate-uri "gfx_core" version))
+        (file-name
+         (string-append name "-" version ".tar.gz"))
+        (sha256
+         (base32
+          "0haldr99n12d90vqgvl77n59hywlklhdff85j2aljaz1yapdvyvm"))))
+    (build-system cargo-build-system)
+    (arguments
+     `(#:skip-build? #t
+       #:cargo-inputs
+       (("rust-log" ,rust-log-0.4)
+        ("rust-mint" ,rust-mint-0.5)
+        ("rust-draw-state" ,rust-draw-state-0.8)
+        ("rust-serde" ,rust-serde-1)
+        ("rust-bitflags" ,rust-bitflags-1))))
+    (home-page "https://github.com/gfx-rs/gfx")
+    (synopsis "Core library of Gfx-rs")
+    (description "This package is a core library of Gfx-rs.")
+    (license license:asl2.0)))
+
+(define-public rust-gfx-device-gl-0.16
+  (package
+    (name "rust-gfx-device-gl")
+    (version "0.16.2")
+    (source
+      (origin
+        (method url-fetch)
+        (uri (crate-uri "gfx_device_gl" version))
+        (file-name
+         (string-append name "-" version ".tar.gz"))
+        (sha256
+         (base32
+          "1g5yg19jvxdmviljyakhd6253bnb2qg7v8iscf48ihc0ldgki70h"))))
+    (build-system cargo-build-system)
+    (arguments
+     `(#:skip-build? #t
+       #:cargo-inputs
+       (("rust-log" ,rust-log-0.4)
+        ("rust-gfx-gl" ,rust-gfx-gl-0.6)
+        ("rust-gfx-core" ,rust-gfx-core-0.9))))
+    (home-page "https://github.com/gfx-rs/gfx")
+    (synopsis "OpenGL backend for gfx-rs")
+    (description "This package provides the openGL backend for gfx-rs.")
+    (license license:asl2.0)))
+
+(define-public rust-gfx-gl-0.6
+  (package
+    (name "rust-gfx-gl")
+    (version "0.6.1")
+    (source
+      (origin
+        (method url-fetch)
+        (uri (crate-uri "gfx_gl" version))
+        (file-name
+         (string-append name "-" version ".tar.gz"))
+        (sha256
+         (base32
+          "0ppzj4bgjawdqz3fvnscqk8lnmgh95pwzh0v96vwy809cxj83lzj"))))
+    (build-system cargo-build-system)
+    (arguments
+     `(#:skip-build? #t
+       #:cargo-inputs
+       (("rust-gl-generator" ,rust-gl-generator-0.14))))
+    (home-page "https://github.com/gfx-rs/gfx_gl")
+    (synopsis "OpenGL bindings for gfx, based on gl-rs")
+    (description
+     "This package provides OpenGL bindings for gfx, based on gl-rs.")
+    (license license:asl2.0)))
+
+(define-public rust-gif-0.10
+  (package
+    (name "rust-gif")
+    (version "0.10.3")
+    (source
+     (origin
+       (method url-fetch)
+       (uri (crate-uri "gif" version))
+       (file-name
+        (string-append name "-" version ".tar.gz"))
+       (sha256
+        (base32
+         "1bw174f7civdfgryvc8pvyhicpr96hzdajnda4s3y8iv3ch907a7"))))
+    (build-system cargo-build-system)
+    (arguments
+     `(#:tests? #f      ; tests not included in release
+       #:cargo-inputs
+       (("rust-color-quant" ,rust-color-quant-1.0)
+        ("rust-libc" ,rust-libc-0.2)
+        ("rust-lzw" ,rust-lzw-0.10))
+       #:cargo-development-inputs
+       (("rust-glob" ,rust-glob-0.3))))
+    (home-page "https://github.com/image-rs/image-gif")
+    (synopsis "GIF decoder and encoder")
+    (description "This package provides a GIF decoder and encoder in Rust.")
+    (license (list license:expat license:asl2.0))))
+
+(define-public rust-gl-0.11
+  (package
+    (name "rust-gl")
+    (version "0.11.0")
+    (source
+      (origin
+        (method url-fetch)
+        (uri (crate-uri "gl" version))
+        (file-name
+         (string-append name "-" version ".tar.gz"))
+        (sha256
+         (base32
+          "1wcqpyhck0xriffkmgmldy33lwk2044hb4l02d44vm4fbvicin6p"))))
+    (build-system cargo-build-system)
+    (arguments
+     `(#:skip-build? #t
+       #:cargo-inputs
+       (("rust-gl-generator" ,rust-gl-generator-0.10))))
+    (home-page "https://github.com/brendanzab/gl-rs/")
+    (synopsis "OpenGL bindings for rust")
+    (description "This package provides OpenGL bindings for rust.")
+    (license license:asl2.0)))
+
+(define-public rust-gl-generator-0.14
+  (package
+    (name "rust-gl-generator")
+    (version "0.14.0")
+    (source
+     (origin
+       (method url-fetch)
+       (uri (crate-uri "gl-generator" version))
+       (file-name
+        (string-append name "-" version ".tar.gz"))
+       (sha256
+        (base32
+         "0k8j1hmfnff312gy7x1aqjzcm8zxid7ij7dlb8prljib7b1dz58s"))))
+    (build-system cargo-build-system)
+    (arguments
+     `(#:cargo-inputs
+       (("rust-khronos-api" ,rust-khronos-api-3)
+        ("rust-log" ,rust-log-0.4)
+        ("rust-xml-rs" ,rust-xml-rs-0.8))))
+    (home-page "https://github.com/brendanzab/gl-rs/")
+    (synopsis "Code generators for bindings to the Khronos OpenGL APIs")
+    (description
+     "Code generators for creating bindings to the Khronos OpenGL APIs.")
+    (license license:asl2.0)))
+
+(define-public rust-gl-generator-0.13
+  (package
+    (inherit rust-gl-generator-0.14)
+    (name "rust-gl-generator")
+    (version "0.13.1")
+    (source
+     (origin
+       (method url-fetch)
+       (uri (crate-uri "gl-generator" version))
+       (file-name
+        (string-append name "-" version ".tar.gz"))
+       (sha256
+        (base32
+         "0jpqjqpyrl73sf8y20p5rv50qz8glnsvv9infg8h4vi52zgbp66a"))))))
+
+(define-public rust-gl-generator-0.11
+ (package
+   (inherit rust-gl-generator-0.13)
+   (name "rust-gl-generator")
+   (version "0.11.0")
+   (source
+    (origin
+      (method url-fetch)
+      (uri (crate-uri "gl-generator" version))
+      (file-name
+       (string-append name "-" version ".tar.gz"))
+      (sha256
+       (base32
+        "1gdchvay0k0g931b2ki33mkfixcw4radk5b8sqsm29rahxg3v8ir"))))))
+
+(define-public rust-gl-generator-0.10
+  (package
+    (name "rust-gl-generator")
+    (version "0.10.0")
+    (source
+      (origin
+        (method url-fetch)
+        (uri (crate-uri "gl_generator" version))
+        (file-name
+         (string-append name "-" version ".tar.gz"))
+        (sha256
+         (base32
+          "0146yd4i9wbgfrhnkc04w7n7civbanznc0q87skp6v7p7hbszzx0"))))
+    (build-system cargo-build-system)
+    (arguments
+     `(#:skip-build? #t
+       #:cargo-inputs
+       (("rust-log" ,rust-log-0.4)
+        ("rust-xml-rs" ,rust-xml-rs-0.8)
+        ("rust-khronos-api" ,rust-khronos-api-3))))
+    (home-page "https://github.com/brendanzab/gl-rs/")
+    (synopsis
+     "Code generators for creating bindings to the Khronos OpenGL APIs")
+    (description
+     "Code generators for creating bindings to the Khronos OpenGL APIs.")
+    (license license:asl2.0)))
+
+(define-public rust-gleam-0.6
+  (package
+    (name "rust-gleam")
+    (version "0.6.19")
+    (source
+     (origin
+       (method url-fetch)
+       (uri (crate-uri "gleam" version))
+       (file-name
+        (string-append name "-" version ".tar.gz"))
+       (sha256
+        (base32
+         "1iazvk3kvw3620gm6x8hy2x1lz51k04acl78cr3ppryhk5y0vqfa"))))
+    (build-system cargo-build-system)
+    (arguments
+     `(#:cargo-inputs
+       (("rust-gl-generator" ,rust-gl-generator-0.13))))
+    (home-page "https://github.com/servo/gleam")
+    (synopsis "Generated OpenGL bindings and wrapper for Servo")
+    (description
+     "Generated OpenGL bindings and wrapper for Servo.")
+    (license (list license:asl2.0 license:expat))))
+
+(define-public rust-glutin-0.22
+  (package
+    (name "rust-glutin")
+    (version "0.22.0-alpha5")
+    (source
+     (origin
+       (method url-fetch)
+       (uri (crate-uri "glutin" version))
+       (file-name
+        (string-append name "-" version ".tar.gz"))
+       (sha256
+        (base32
+         "0lilr4f335m1fq1acmshd51zblfaglw1hha6lhalnc1fw3cg0aag"))))
+    (build-system cargo-build-system)
+    (arguments
+     `(#:cargo-inputs
+       (("rust-android-glue" ,rust-android-glue-0.2)
+        ("rust-cgl" ,rust-cgl-0.3)
+        ("rust-cocoa" ,rust-cocoa-0.19)
+        ("rust-core-foundation" ,rust-core-foundation-0.6)
+        ("rust-core-graphics" ,rust-core-graphics-0.17)
+        ("rust-glutin-egl-sys" ,rust-glutin-egl-sys-0.1)
+        ("rust-glutin-emscripten-sys" ,rust-glutin-emscripten-sys-0.1)
+        ("rust-glutin-gles2-sys" ,rust-glutin-gles2-sys-0.1)
+        ("rust-glutin-glx-sys" ,rust-glutin-glx-sys-0.1)
+        ("rust-glutin-wgl-sys" ,rust-glutin-wgl-sys-0.1)
+        ("rust-lazy-static" ,rust-lazy-static-1)
+        ("rust-libloading" ,rust-libloading-0.5)
+        ("rust-log" ,rust-log-0.4)
+        ("rust-objc" ,rust-objc-0.2)
+        ("rust-osmesa-sys" ,rust-osmesa-sys-0.1)
+        ("rust-parking-lot" ,rust-parking-lot-0.9)
+        ("rust-wayland-client" ,rust-wayland-client-0.23)
+        ("rust-winapi" ,rust-winapi-0.3)
+        ("rust-winit" ,rust-winit-0.20))))
+    (home-page "https://github.com/tomaka/glutin")
+    (synopsis
+     "Cross-platform OpenGL context provider")
+    (description
+     "Cross-platform OpenGL context provider.")
+    (license license:asl2.0)))
+
+(define-public rust-glutin-0.21
+  (package
+    (inherit rust-glutin-0.22)
+    (name "rust-glutin")
+    (version "0.21.2")
+    (source
+     (origin
+       (method url-fetch)
+       (uri (crate-uri "glutin" version))
+       (file-name
+        (string-append name "-" version ".tar.gz"))
+       (sha256
+        (base32
+         "1ggyyqn7dvz4yx5ygqfvnxwfb78wvdm5y6xqw5my1b4x61dv6wak"))))
+    (arguments
+     `(#:cargo-inputs
+       (("rust-android-glue" ,rust-android-glue-0.2)
+        ("rust-cgl" ,rust-cgl-0.2)
+        ("rust-cocoa" ,rust-cocoa-0.18)
+        ("rust-core-foundation" ,rust-core-foundation-0.6)
+        ("rust-core-graphics" ,rust-core-graphics-0.17)
+        ("rust-glutin-egl-sys" ,rust-glutin-egl-sys-0.1)
+        ("rust-glutin-emscripten-sys" ,rust-glutin-emscripten-sys-0.1)
+        ("rust-glutin-gles2-sys" ,rust-glutin-gles2-sys-0.1)
+        ("rust-glutin-glx-sys" ,rust-glutin-glx-sys-0.1)
+        ("rust-glutin-wgl-sys" ,rust-glutin-wgl-sys-0.1)
+        ("rust-lazy-static" ,rust-lazy-static-1)
+        ("rust-libloading" ,rust-libloading-0.5)
+        ("rust-objc" ,rust-objc-0.2)
+        ("rust-osmesa-sys" ,rust-osmesa-sys-0.1)
+        ("rust-parking-lot" ,rust-parking-lot-0.9)
+        ("rust-wayland-client" ,rust-wayland-client-0.21)
+        ("rust-winapi" ,rust-winapi-0.3)
+        ("rust-winit" ,rust-winit-0.19))))))
+
+(define-public rust-glutin-egl-sys-0.1
+  (package
+    (name "rust-glutin-egl-sys")
+    (version "0.1.4")
+    (source
+     (origin
+       (method url-fetch)
+       (uri (crate-uri "glutin-egl-sys" version))
+       (file-name
+        (string-append name "-" version ".tar.gz"))
+       (sha256
+        (base32
+         "0k1x1frdp4wp47qkai8zzmgqxzpfcn7780m29qgd92lbnbrxwbkp"))))
+    (build-system cargo-build-system)
+    (arguments
+     `(#:cargo-inputs
+       (("rust-winapi" ,rust-winapi-0.3)
+        ("rust-gl-generator" ,rust-gl-generator-0.13))))
+    (home-page "https://github.com/rust-windowing/glutin")
+    (synopsis "Egl bindings for glutin")
+    (description "The egl bindings for glutin.")
+    (license license:asl2.0)))
+
+(define-public rust-glutin-emscripten-sys-0.1
+  (package
+    (name "rust-glutin-emscripten-sys")
+    (version "0.1.0")
+    (source
+     (origin
+       (method url-fetch)
+       (uri (crate-uri "glutin_emscripten_sys" version))
+       (file-name
+        (string-append name "-" version ".tar.gz"))
+       (sha256
+        (base32
+         "1ix0jmm8p5if4qarzdfl5mz9rbq4hhgqarakb3bzwvyz13dkynr4"))))
+    (build-system cargo-build-system)
+    (home-page "https://github.com/tomaka/glutin")
+    (synopsis "Emscripten bindings for glutin")
+    (description "The emscripten bindings for glutin.")
+    (license license:asl2.0)))
+
+(define-public rust-glutin-gles2-sys-0.1
+  (package
+    (name "rust-glutin-gles2-sys")
+    (version "0.1.3")
+    (source
+     (origin
+       (method url-fetch)
+       (uri (crate-uri "glutin_gles2_sys" version))
+       (file-name
+        (string-append name "-" version ".tar.gz"))
+       (sha256
+        (base32
+         "1pswvl5zyqmqwzjr674yzslj0al2xbqsp2ai9ggb9qbshlq6r6c9"))))
+    (build-system cargo-build-system)
+    (arguments
+     `(#:cargo-inputs
+       (("rust-objc" ,rust-objc-0.2)
+        ("rust-gl-generator" ,rust-gl-generator-0.11))))
+    (home-page "https://github.com/tomaka/glutin")
+    (synopsis "The gles2 bindings for glutin")
+    (description "The gles2 bindings for glutin.")
+    (license license:asl2.0)))
+
+(define-public rust-glutin-glx-sys-0.1
+  (package
+    (name "rust-glutin-glx-sys")
+    (version "0.1.5")
+    (source
+     (origin
+       (method url-fetch)
+       (uri (crate-uri "glutin-glx-sys" version))
+       (file-name
+        (string-append name "-" version ".tar.gz"))
+       (sha256
+        (base32
+         "0mxs3mil68xqqb49466n5rpwpcllj6fwqjgrcrzzmz26bv5ab40j"))))
+    (build-system cargo-build-system)
+    (arguments
+     `(#:cargo-inputs
+       (("rust-x11-dl" ,rust-x11-dl-2)
+        ("rust-gl-generator" ,rust-gl-generator-0.11))))
+    (home-page "https://github.com/tomaka/glutin")
+    (synopsis "Glx bindings for glutin")
+    (description "The glx bindings for glutin.")
+    (license license:asl2.0)))
+
+(define-public rust-glutin-wgl-sys-0.1
+  (package
+    (name "rust-glutin-wgl-sys")
+    (version "0.1.3")
+    (source
+     (origin
+       (method url-fetch)
+       (uri (crate-uri "glutin-wgl-sys" version))
+       (file-name
+        (string-append name "-" version ".tar.gz"))
+       (sha256
+        (base32
+         "08chlfzpj59q36qm212i4k879gvjzha7i90q90fds8pw3v4vn0gq"))))
+    (build-system cargo-build-system)
+    (arguments
+     `(#:cargo-inputs
+       (("rust-gl-generator" ,rust-gl-generator-0.11))))
+    (home-page "https://github.com/tomaka/glutin")
+    (synopsis "Wgl bindings for glutin")
+    (description "The wgl bindings for glutin.")
+    (license license:asl2.0)))
+
+(define-public rust-image-0.23
+  (package
+    (name "rust-image")
+    (version "0.23.6")
+    (source
+      (origin
+        (method url-fetch)
+        (uri (crate-uri "image" version))
+        (file-name
+         (string-append name "-" version ".tar.gz"))
+        (sha256
+         (base32
+          "1d2a80k7pwqshliqi5fw1dwkz7q9zd6pjnwpw8zxc1v4xhzmbc5m"))))
+    (build-system cargo-build-system)
+    (arguments
+     `(#:tests? #f      ; Some test images are missing from the release.
+       #:cargo-inputs
+       (("rust-bytemuck" ,rust-bytemuck-1)
+        ("rust-byteorder" ,rust-byteorder-1)
+        ("rust-gif" ,rust-gif-0.10)
+        ("rust-jpeg-decoder" ,rust-jpeg-decoder-0.1)
+        ("rust-num-iter" ,rust-num-iter-0.1)
+        ("rust-num-rational" ,rust-num-rational-0.3)
+        ("rust-num-traits" ,rust-num-traits-0.2)
+        ("rust-png" ,rust-png-0.16)
+        ("rust-scoped-threadpool" ,rust-scoped-threadpool-0.1)
+        ("rust-tiff" ,rust-tiff-0.5))
+       #:cargo-development-inputs
+       (("rust-crc32fast" ,rust-crc32fast-1)
+        ("rust-criterion" ,rust-criterion-0.3)
+        ("rust-glob" ,rust-glob-0.3)
+        ("rust-num-complex" ,rust-num-complex-0.3)
+        ("rust-quickcheck" ,rust-quickcheck-0.9))))
+    (home-page "https://github.com/image-rs/image")
+    (synopsis "Imaging library written in Rust")
+    (description
+     "Imaging library written in Rust.  Provides basic filters and decoders
+for the most common image formats.")
+    (license license:expat)))
+
+(define-public rust-image-0.22
+  (package
+    (inherit rust-image-0.23)
+    (name "rust-image")
+    (version "0.22.5")
+    (source
+     (origin
+       (method url-fetch)
+       (uri (crate-uri "image" version))
+       (file-name
+        (string-append name "-" version ".tar.gz"))
+       (sha256
+        (base32
+         "0jpbd0p1q7xx6395ba9ikz2k4cfp26qczisa8m2v15w3hzd2mv88"))))
+    (arguments
+     `(#:tests? #f      ; Some test images are missing from the release.
+       #:cargo-inputs
+       (("rust-byteorder" ,rust-byteorder-1)
+        ("rust-gif" ,rust-gif-0.10)
+        ("rust-jpeg-decoder" ,rust-jpeg-decoder-0.1)
+        ("rust-num-iter" ,rust-num-iter-0.1)
+        ("rust-num-rational" ,rust-num-rational-0.2)
+        ("rust-num-traits" ,rust-num-traits-0.2)
+        ("rust-png" ,rust-png-0.15)
+        ("rust-scoped-threadpool" ,rust-scoped-threadpool-0.1)
+        ("rust-tiff" ,rust-tiff-0.3))
+       #:cargo-development-inputs
+       (("rust-crc32fast" ,rust-crc32fast-1)
+        ("rust-glob" ,rust-glob-0.3)
+        ("rust-num-complex" ,rust-num-complex-0.2)
+        ("rust-quickcheck" ,rust-quickcheck-0.9))))))
+
+(define-public rust-image-0.21
+  (package
+    (inherit rust-image-0.22)
+    (name "rust-image")
+    (version "0.21.3")
+    (source
+     (origin
+       (method url-fetch)
+       (uri (crate-uri "image" version))
+       (file-name
+        (string-append name "-" version ".tar.gz"))
+       (sha256
+        (base32
+         "1sv534xp8yyn7jj0q6yn2bgng1350f962g81sv8v7c6pgi31wdrm"))))
+    (arguments
+     `(#:cargo-inputs
+       (("rust-byteorder" ,rust-byteorder-1)
+        ("rust-gif" ,rust-gif-0.10)
+        ("rust-jpeg-decoder" ,rust-jpeg-decoder-0.1)
+        ("rust-lzw" ,rust-lzw-0.10)
+        ("rust-num-iter" ,rust-num-iter-0.1)
+        ("rust-num-rational" ,rust-num-rational-0.2)
+        ("rust-num-traits" ,rust-num-traits-0.2)
+        ("rust-png" ,rust-png-0.14)
+        ("rust-scoped-threadpool" ,rust-scoped-threadpool-0.1)
+        ("rust-tiff" ,rust-tiff-0.2))
+       #:cargo-development-inputs
+       (("rust-glob" ,rust-glob-0.3)
+        ("rust-num-complex" ,rust-num-complex-0.2)
+        ("rust-quickcheck" ,rust-quickcheck-0.6))))))
+
+(define-public rust-image-0.20
+  (package
+    (inherit rust-image-0.21)
+    (name "rust-image")
+    (version "0.20.1")
+    (source
+     (origin
+       (method url-fetch)
+       (uri (crate-uri "image" version))
+       (file-name
+        (string-append name "-" version ".tar.gz"))
+       (sha256
+        (base32
+         "01058n0jcw25pq5shn7lkvywv8c28xsxb3nwwyb4r16ijm1mnrj4"))))
+    (arguments
+     `(#:cargo-inputs
+       (("rust-byteorder" ,rust-byteorder-1)
+        ("rust-gif" ,rust-gif-0.10)
+        ("rust-jpeg-decoder" ,rust-jpeg-decoder-0.1)
+        ("rust-lzw" ,rust-lzw-0.10)
+        ("rust-num-iter" ,rust-num-iter-0.1)
+        ("rust-num-rational" ,rust-num-rational-0.2)
+        ("rust-num-traits" ,rust-num-traits-0.2)
+        ("rust-png" ,rust-png-0.12)
+        ("rust-scoped-threadpool" ,rust-scoped-threadpool-0.1)
+        ("rust-tiff" ,rust-tiff-0.2))
+       #:cargo-development-inputs
+       (("rust-glob" ,rust-glob-0.2)
+        ("rust-num-complex" ,rust-num-complex-0.2)
+        ("rust-quickcheck" ,rust-quickcheck-0.6))))))
+
+(define-public rust-jpeg-decoder-0.1
+  (package
+    (name "rust-jpeg-decoder")
+    (version "0.1.18")
+    (source
+     (origin
+       (method url-fetch)
+       (uri (crate-uri "jpeg-decoder" version))
+       (file-name
+        (string-append name "-" version ".tar.gz"))
+       (sha256
+        (base32
+         "0lc428qgffh2a1agkq0p26mvf9rjaiswpywy5883j99mqypg0mh2"))))
+    (build-system cargo-build-system)
+    (arguments
+     `(#:tests? #f      ; Some test files missing.
+       #:cargo-inputs
+       (("rust-byteorder" ,rust-byteorder-1)
+        ("rust-rayon" ,rust-rayon-1))
+       #:cargo-development-inputs
+       (("rust-criterion" ,rust-criterion-0.3)
+        ("rust-png" ,rust-png-0.14)
+        ("rust-walkdir" ,rust-walkdir-2))))
+    (home-page "https://github.com/image-rs/jpeg-decoder")
+    (synopsis "JPEG decoder")
+    (description "JPEG decoder written in Rust.")
+    (license (list license:expat license:asl2.0))))
+
+(define-public rust-line-drawing-0.7
+  (package
+    (name "rust-line-drawing")
+    (version "0.7.0")
+    (source
+     (origin
+       (method url-fetch)
+       (uri (crate-uri "line_drawing" version))
+       (file-name
+        (string-append name "-" version ".tar.gz"))
+       (sha256
+        (base32
+         "1fcna7hq1g1kkkqy07hydscx5d2zgb6gskz3vnsvsif8h8ysvisw"))))
+    (build-system cargo-build-system)
+    (arguments
+     ;; This version does not specify any versions on dependants.
+     `(#:tests? #f      ; Cannot compile line_drawing for the test suite.
+       #:cargo-inputs
+       (("rust-num-traits" ,rust-num-traits-0.2))
+       #:cargo-development-inputs
+       (("rust-bresenham" ,rust-bresenham-0.1)
+        ("rust-image" ,rust-image-0.22) ; 0.17?
+        ("rust-rand" ,rust-rand-0.6))))
+    (home-page "https://github.com/expenses/line_drawing")
+    (synopsis "Collection of line-drawing algorithms")
+    (description
+     "This package provides a collection of line-drawing algorithms for use in
+graphics and video games.")
+    (license license:expat)))
+
+(define-public rust-lyon-geom-0.14
+  (package
+    (name "rust-lyon-geom")
+    (version "0.14.1")
+    (source
+      (origin
+        (method url-fetch)
+        (uri (crate-uri "lyon_geom" version))
+        (file-name
+         (string-append name "-" version ".tar.gz"))
+        (sha256
+         (base32
+          "178z4cqqmyw0rsabbgx9phkjxjzcnq0604062lqjlq87k063216a"))))
+    (build-system cargo-build-system)
+    (arguments
+     `(#:skip-build? #t
+       #:cargo-inputs
+       (("rust-num-traits" ,rust-num-traits-0.2)
+        ("rust-euclid" ,rust-euclid-0.20)
+        ("rust-arrayvec" ,rust-arrayvec-0.4)
+        ("rust-serde" ,rust-serde-1))))
+    (home-page "https://github.com/nical/lyon")
+    (synopsis "2D graphics rendering on the GPU using tessellation")
+    (description
+     "This package provides 2D graphics rendering on the GPU using tessellation.")
+    (license (list license:expat license:asl2.0))))
+
+(define-public rust-lyon-path-0.14
+  (package
+    (name "rust-lyon-path")
+    (version "0.14.0")
+    (source
+      (origin
+        (method url-fetch)
+        (uri (crate-uri "lyon_path" version))
+        (file-name
+         (string-append name "-" version ".tar.gz"))
+        (sha256
+         (base32
+          "0qk8x46w0sf6j04l6gvhgn9kr4ymcqkmkh67w8wqahm54jn5gjqb"))))
+    (build-system cargo-build-system)
+    (arguments
+     `(#:skip-build? #t
+       #:cargo-inputs
+       (("rust-lyon-geom" ,rust-lyon-geom-0.14)
+        ("rust-serde" ,rust-serde-1))))
+    (home-page "https://github.com/nical/lyon")
+    (synopsis "Types and utilities to store, build and iterate over 2D paths")
+    (description
+     "Types and utilities to store, build and iterate over 2D paths.")
+    (license (list license:expat license:asl2.0))))
+
+(define-public rust-osmesa-sys-0.1
+  (package
+    (name "rust-osmesa-sys")
+    (version "0.1.2")
+    (source
+     (origin
+       (method url-fetch)
+       (uri (crate-uri "osmesa-sys" version))
+       (file-name
+        (string-append name "-" version ".tar.gz"))
+       (sha256
+        (base32
+         "0fq1q1zcgfb0qydrg9r2738jlwc4hqxgb9vj11z72bjxx7kfrkw8"))))
+    (build-system cargo-build-system)
+    (arguments
+     `(#:cargo-inputs
+       (("rust-shared-library" ,rust-shared-library-0.1))))
+    (home-page "https://crates.io/crates/osmesa-sys")
+    (synopsis "OSMesa library bindings for Rust")
+    (description "This package provides OSMesa library bindings for Rust.")
+    (license license:cc0)))
+
+(define-public rust-piston-0.49
+  (package
+    (name "rust-piston")
+    (version "0.49.0")
+    (source
+      (origin
+        (method url-fetch)
+        (uri (crate-uri "piston" version))
+        (file-name
+         (string-append name "-" version ".tar.gz"))
+        (sha256
+         (base32
+          "1y0rbw92mzagqmwk79wv9axq0m7aid0s0d5cppyzh33wrxhdl3xj"))))
+    (build-system cargo-build-system)
+    (arguments
+     `(#:skip-build? #t
+       #:cargo-inputs
+       (("rust-pistoncore-input" ,rust-pistoncore-input-0.28)
+        ("rust-pistoncore-window" ,rust-pistoncore-window-0.44)
+        ("rust-pistoncore-event-loop" ,rust-pistoncore-event-loop-0.49))))
+    (home-page "https://github.com/PistonDevelopers/piston")
+    (synopsis "Piston game engine core libraries")
+    (description
+     "The Piston game engine core libraries.")
+    (license license:expat)))
+
+(define-public rust-piston-float-1.0
+  (package
+    (name "rust-piston-float")
+    (version "1.0.0")
+    (source
+      (origin
+        (method url-fetch)
+        (uri (crate-uri "piston-float" version))
+        (file-name
+          (string-append name "-" version ".tar.gz"))
+        (sha256
+          (base32
+            "0r35aasycms79hf2vf1ap40kkp8ywgl4hmfkf762dq8jwd3vw07r"))))
+    (build-system cargo-build-system)
+    (arguments `(#:skip-build? #t))
+    (home-page
+      "https://github.com/pistondevelopers/float")
+    (synopsis
+      "Traits for generic floats in game development")
+    (description
+      "Traits for generic floats in game development")
+    (license license:expat)))
+
+(define-public rust-piston-gfx-texture-0.40
+  (package
+    (name "rust-piston-gfx-texture")
+    (version "0.40.0")
+    (source
+      (origin
+        (method url-fetch)
+        (uri (crate-uri "piston-gfx_texture" version))
+        (file-name
+         (string-append name "-" version ".tar.gz"))
+        (sha256
+         (base32
+          "1nr5awdgk3njfvfanszrv4gxz93f6skid1c8yijswccygripchqz"))))
+    (build-system cargo-build-system)
+    (arguments
+     `(#:skip-build? #t
+       #:cargo-inputs
+       (("rust-gfx" ,rust-gfx-0.18)
+        ("rust-image" ,rust-image-0.22)
+        ("rust-piston-texture" ,rust-piston-texture-0.8)
+        ("rust-gfx-core" ,rust-gfx-core-0.9))))
+    (home-page "https://github.com/pistondevelopers/gfx_texture")
+    (synopsis
+      "Gfx texture representation that works nicely with Piston libraries")
+    (description "This package provides a Gfx texture representation that works
+nicely with Piston libraries.")
+    (license license:expat)))
+
+(define-public rust-piston-graphics-api-version-0.2
+  (package
+    (name "rust-piston-graphics-api-version")
+    (version "0.2.0")
+    (source
+      (origin
+        (method url-fetch)
+        (uri (crate-uri "piston-graphics_api_version" version))
+        (file-name
+          (string-append name "-" version ".tar.gz"))
+        (sha256
+          (base32
+            "1b5p6s45jqv057lpbxkiq3yrdjjhvcynmi2vjf8292rf0yh4hky5"))))
+    (build-system cargo-build-system)
+    (arguments `(#:skip-build? #t))
+    (home-page
+      "https://github.com/PistonDevelopers/graphics_api_version")
+    (synopsis
+      "A library for storing graphics API versions")
+    (description
+      "This package provides a library for storing graphics API versions")
+    (license license:expat)))
+
+(define-public rust-piston-shaders-graphics2d-0.3
+  (package
+    (name "rust-piston-shaders-graphics2d")
+    (version "0.3.1")
+    (source
+      (origin
+        (method url-fetch)
+        (uri (crate-uri "piston-shaders_graphics2d" version))
+        (file-name
+          (string-append name "-" version ".tar.gz"))
+        (sha256
+          (base32
+            "1dhh9bv4q19gdnj9d1nqq0yrvzs6gcn0c5j1p1f3xzyzq7d1gg4p"))))
+    (build-system cargo-build-system)
+    (arguments `(#:skip-build? #t))
+    (home-page
+      "https://github.com/PistonDevelopers/shaders")
+    (synopsis "Shaders for 2D graphics in Rust")
+    (description "Shaders for 2D graphics in Rust")
+    (license license:expat)))
+
+(define-public rust-piston-texture-0.8
+  (package
+    (name "rust-piston-texture")
+    (version "0.8.0")
+    (source
+      (origin
+        (method url-fetch)
+        (uri (crate-uri "piston-texture" version))
+        (file-name
+          (string-append name "-" version ".tar.gz"))
+        (sha256
+          (base32
+            "1pcv5my49b8xzqcb87wqh2ndgvr4s9ipys96s0h9j2plxrj3bjb2"))))
+    (build-system cargo-build-system)
+    (arguments `(#:skip-build? #t))
+    (home-page
+      "https://github.com/pistondevelopers/texture")
+    (synopsis "A generic library for textures")
+    (description
+      "This package provides a generic library for textures")
+    (license license:expat)))
+
+(define-public rust-piston-viewport-1.0
+  (package
+    (name "rust-piston-viewport")
+    (version "1.0.0")
+    (source
+      (origin
+        (method url-fetch)
+        (uri (crate-uri "piston-viewport" version))
+        (file-name
+         (string-append name "-" version ".tar.gz"))
+        (sha256
+         (base32
+          "16378hcy41b7x3zj2z4har0wq6fl4r62kf9p106jjl8hg2dv3aq1"))))
+    (build-system cargo-build-system)
+    (arguments
+     `(#:skip-build? #t
+       #:cargo-inputs
+       (("rust-piston-float" ,rust-piston-float-1.0))))
+    (home-page "https://github.com/PistonDevelopers/viewport")
+    (synopsis "Library for storing viewport information")
+    (description
+     "This package provides a library for storing viewport information.")
+    (license license:expat)))
+
+(define-public rust-piston-window-0.105
+  (package
+    (name "rust-piston-window")
+    (version "0.105.0")
+    (source
+      (origin
+        (method url-fetch)
+        (uri (crate-uri "piston_window" version))
+        (file-name
+         (string-append name "-" version ".tar.gz"))
+        (sha256
+         (base32
+          "05n2905gkp5ck25kbq95ia6pj1xz63dpp247jz3xcw1d41xpvi95"))))
+    (build-system cargo-build-system)
+    (arguments
+     `(#:skip-build? #t
+       #:cargo-inputs
+       (("rust-gfx-device-gl" ,rust-gfx-device-gl-0.16)
+        ("rust-gfx" ,rust-gfx-0.18)
+        ("rust-piston2d-graphics" ,rust-piston2d-graphics-0.35)
+        ("rust-piston" ,rust-piston-0.49)
+        ("rust-shader-version" ,rust-shader-version-0.6)
+        ("rust-pistoncore-glutin-window" ,rust-pistoncore-glutin-window-0.63)
+        ("rust-piston2d-gfx-graphics" ,rust-piston2d-gfx-graphics-0.66)
+        ("rust-piston-texture" ,rust-piston-texture-0.8))))
+    (home-page "https://github.com/pistondevelopers/piston_window")
+    (synopsis "Official Piston window wrapper for the Piston game engine")
+    (description
+     "The official Piston window wrapper for the Piston game engine.")
+    (license license:expat)))
+
+(define-public rust-piston2d-gfx-graphics-0.66
+  (package
+    (name "rust-piston2d-gfx-graphics")
+    (version "0.66.0")
+    (source
+      (origin
+        (method url-fetch)
+        (uri (crate-uri "piston2d-gfx_graphics" version))
+        (file-name
+         (string-append name "-" version ".tar.gz"))
+        (sha256
+         (base32
+          "1pmlkf5rl6pr0c1lqm0059xwj9pwlws7gaq9w6r9d916di6fzki1"))))
+    (build-system cargo-build-system)
+    (arguments
+     `(#:skip-build? #t
+       #:cargo-inputs
+       (("rust-gfx" ,rust-gfx-0.18)
+        ("rust-piston-shaders-graphics2d" ,rust-piston-shaders-graphics2d-0.3)
+        ("rust-piston-gfx-texture" ,rust-piston-gfx-texture-0.40)
+        ("rust-shader-version" ,rust-shader-version-0.6)
+        ("rust-draw-state" ,rust-draw-state-0.8))))
+    (home-page "https://github.com/PistonDevelopers/gfx_graphics")
+    (synopsis "Gfx 2D back-end for the Piston game engine")
+    (description
+     "This package provides a Gfx 2D back-end for the Piston game engine.")
+    (license license:expat)))
+
+(define-public rust-piston2d-graphics-0.35
+  (package
+    (name "rust-piston2d-graphics")
+    (version "0.35.0")
+    (source
+      (origin
+        (method url-fetch)
+        (uri (crate-uri "piston2d-graphics" version))
+        (file-name
+         (string-append name "-" version ".tar.gz"))
+        (sha256
+         (base32
+          "1dx2fanxc2pj76hc5l72x0fh4qg9gchjlr8rmbhdk6jpggcmq56g"))))
+    (build-system cargo-build-system)
+    (arguments
+     `(#:skip-build? #t
+       #:cargo-inputs
+       (("rust-interpolation" ,rust-interpolation-0.2)
+        ("rust-rusttype" ,rust-rusttype-0.7)
+        ("rust-piston-texture" ,rust-piston-texture-0.8)
+        ("rust-piston-viewport" ,rust-piston-viewport-1.0)
+        ("rust-read-color" ,rust-read-color-1.0)
+        ("rust-vecmath" ,rust-vecmath-1.0)
+        ("rust-fnv" ,rust-fnv-1))))
+    (home-page "https://github.com/pistondevelopers/graphics")
+    (synopsis "Library for 2D graphics that works with multiple back-ends")
+    (description "This package provides a library for 2D graphics that works
+with multiple back-ends.")
+    (license license:expat)))
+
+(define-public rust-pistoncore-event-loop-0.49
+  (package
+    (name "rust-pistoncore-event-loop")
+    (version "0.49.0")
+    (source
+      (origin
+        (method url-fetch)
+        (uri (crate-uri "pistoncore-event_loop" version))
+        (file-name
+         (string-append name "-" version ".tar.gz"))
+        (sha256
+         (base32
+          "1h9ij9vx42xg39198yxdlpk842pli5jqm2kwswiv3bqqcji0fwsm"))))
+    (build-system cargo-build-system)
+    (arguments
+     `(#:skip-build? #t
+       #:cargo-inputs
+       (("rust-pistoncore-input" ,rust-pistoncore-input-0.28)
+        ("rust-pistoncore-window" ,rust-pistoncore-window-0.44))))
+    (home-page "https://github.com/PistonDevelopers/piston")
+    (synopsis "Piston event loop for games and interactive applications")
+    (description "This package provides a Piston event loop for games and
+interactive applications.")
+    (license license:expat)))
+
+(define-public rust-pistoncore-glutin-window-0.63
+  (package
+    (name "rust-pistoncore-glutin-window")
+    (version "0.63.0")
+    (source
+      (origin
+        (method url-fetch)
+        (uri (crate-uri "pistoncore-glutin_window" version))
+        (file-name
+         (string-append name "-" version ".tar.gz"))
+        (sha256
+         (base32
+          "0dhbyxarv5i742d400bmqdqq3f8c25kcgcg0xavrc18dc913rixc"))))
+    (build-system cargo-build-system)
+    (arguments
+     `(#:skip-build? #t
+       #:cargo-inputs
+       (("rust-gl" ,rust-gl-0.11)
+        ("rust-glutin" ,rust-glutin-0.21)
+        ("rust-pistoncore-input" ,rust-pistoncore-input-0.28)
+        ("rust-pistoncore-window" ,rust-pistoncore-window-0.44)
+        ("rust-shader-version" ,rust-shader-version-0.6))))
+    (home-page "https://github.com/pistondevelopers/glutin_window")
+    (synopsis "Piston window back-end using the Glutin library")
+    (description
+     "This package provides a Piston window back-end using the Glutin library.")
+    (license license:expat)))
+
+(define-public rust-pistoncore-input-0.28
+  (package
+    (name "rust-pistoncore-input")
+    (version "0.28.0")
+    (source
+      (origin
+        (method url-fetch)
+        (uri (crate-uri "pistoncore-input" version))
+        (file-name
+         (string-append name "-" version ".tar.gz"))
+        (sha256
+         (base32
+          "1rrcz9px098m3nx98gvrvzirfdp3vg03cblfkcrp4wnvswc0hwq5"))))
+    (build-system cargo-build-system)
+    (arguments
+     `(#:skip-build? #t
+       #:cargo-inputs
+       (("rust-piston-viewport" ,rust-piston-viewport-1.0)
+        ("rust-serde" ,rust-serde-1)
+        ("rust-serde-derive" ,rust-serde-derive-1)
+        ("rust-bitflags" ,rust-bitflags-1))))
+    (home-page "https://github.com/PistonDevelopers/piston")
+    (synopsis "Structure for user input")
+    (description
+     "This package provides a structure for user input.")
+    (license license:expat)))
+
+(define-public rust-pistoncore-window-0.44
+  (package
+    (name "rust-pistoncore-window")
+    (version "0.44.0")
+    (source
+      (origin
+        (method url-fetch)
+        (uri (crate-uri "pistoncore-window" version))
+        (file-name
+         (string-append name "-" version ".tar.gz"))
+        (sha256
+         (base32
+          "18qy3nnpb9jczvkiyzzznamck0pzgiyi6073jrkldnci6b3in10q"))))
+    (build-system cargo-build-system)
+    (arguments
+     `(#:skip-build? #t
+       #:cargo-inputs
+       (("rust-piston-graphics-api-version"
+         ,rust-piston-graphics-api-version-0.2)
+        ("rust-pistoncore-input" ,rust-pistoncore-input-0.28))))
+    (home-page "https://github.com/PistonDevelopers/piston")
+    (synopsis "Library for window abstraction")
+    (description
+     "This package provides a library for window abstraction.")
+    (license license:expat)))
+
+(define-public rust-png-0.16
+  (package
+    (name "rust-png")
+    (version "0.16.6")
+    (source
+      (origin
+        (method url-fetch)
+        (uri (crate-uri "png" version))
+        (file-name
+         (string-append name "-" version ".tar.gz"))
+        (sha256
+         (base32
+          "1393s3v3kg4bxnn86d7yn2vyz8xj6g64ighdfkc3vzpsg5sbyl61"))))
+    (build-system cargo-build-system)
+    (arguments
+     `(#:skip-build? #t
+       #:cargo-inputs
+       (("rust-bitflags" ,rust-bitflags-1)
+        ("rust-crc32fast" ,rust-crc32fast-1)
+        ("rust-deflate" ,rust-deflate-0.8)
+        ("rust-miniz-oxide" ,rust-miniz-oxide-0.3))
+       #:cargo-development-inputs
+       (("rust-criterion" ,rust-criterion-0.3)
+        ("rust-getopts" ,rust-getopts-0.2)
+        ;; TODO: glium has many cyclic dependencies with other packages
+        ;; ("rust-glium" ,rust-glium-0.24)
+        ("rust-glob" ,rust-glob-0.3)
+        ("rust-rand" ,rust-rand-0.7)
+        ("rust-term" ,rust-term-0.6))))
+    (home-page "https://github.com/image-rs/image-png.git")
+    (synopsis "PNG decoding and encoding library in pure Rust")
+    (description
+     "PNG decoding and encoding library in pure Rust.")
+    (license (list license:expat license:asl2.0))))
+
+(define-public rust-png-0.15
+  (package
+    (inherit rust-png-0.16)
+    (name "rust-png")
+    (version "0.15.3")
+    (source
+     (origin
+       (method url-fetch)
+       (uri (crate-uri "png" version))
+       (file-name
+        (string-append name "-" version ".tar.gz"))
+       (sha256
+        (base32
+         "10x2qkhyfnm3si5vgx77r2ik811gaap7ahi825wfxgsb0lirm1gg"))))
+    (arguments
+     `(#:skip-build? #t
+       #:cargo-inputs
+       (("rust-bitflags" ,rust-bitflags-1)
+        ("rust-crc32fast" ,rust-crc32fast-1)
+        ("rust-deflate" ,rust-deflate-0.7)
+        ("rust-inflate" ,rust-inflate-0.4))
+       #:cargo-development-inputs
+       (("rust-getopts" ,rust-getopts-0.2)
+        ;; TODO: glium has many cyclic dependencies with other packages
+        ;;("rust-glium" ,rust-glium-0.24)
+        ("rust-glob" ,rust-glob-0.3)
+        ("rust-rand" ,rust-rand-0.7)
+        ("rust-term" ,rust-term-0.6))))))
+
+(define-public rust-png-0.14
+  (package
+    (inherit rust-png-0.15)
+    (name "rust-png")
+    (version "0.14.1")
+    (source
+     (origin
+       (method url-fetch)
+       (uri (crate-uri "png" version))
+       (file-name
+        (string-append name "-" version ".tar.gz"))
+       (sha256
+        (base32
+         "0nf3a8r9p9zrj4x30b48f7yv18dz9xkmrq9b3lnzmpnhzn0z9nk3"))))
+    (arguments
+     `(#:skip-build? #t
+       #:cargo-inputs
+       (("rust-bitflags" ,rust-bitflags-1)
+        ("rust-deflate" ,rust-deflate-0.7)
+        ("rust-inflate" ,rust-inflate-0.4)
+        ("rust-num-iter" ,rust-num-iter-0.1))
+       #:cargo-development-inputs
+       (("rust-getopts" ,rust-getopts-0.2)
+        ;; TODO: glium has many cyclic dependencies with other packages
+        ;; ("rust-glium" ,rust-glium-0.22)
+        ("rust-glob" ,rust-glob-0.2)
+        ("rust-rand" ,rust-rand-0.5)
+        ("rust-term" ,rust-term-0.4))))))
+
+(define-public rust-png-0.12
+  (package
+    (inherit rust-png-0.14)
+    (name "rust-png")
+    (version "0.12.0")
+    (source
+     (origin
+       (method url-fetch)
+       (uri (crate-uri "png" version))
+       (file-name
+        (string-append name "-" version ".tar.gz"))
+       (sha256
+        (base32
+         "0nqlc8lqf8ncv3kj0gzlxwli61dbbxcjlrp176kvilw4sl09cjzm"))))
+    (arguments
+     `(#:skip-build? #t
+       #:cargo-inputs
+       (("rust-bitflags" ,rust-bitflags-1)
+        ("rust-deflate" ,rust-deflate-0.7)
+        ("rust-inflate" ,rust-inflate-0.4)
+        ("rust-num-iter" ,rust-num-iter-0.1))
+       #:cargo-development-inputs
+       (("rust-getopts" ,rust-getopts-0.2)
+        ;; TODO: gluum has many cyclic dependencies with other packages
+        ;; ("rust-glium" ,rust-glium-0.21)
+        ("rust-glob" ,rust-glob-0.2)
+        ("rust-term" ,rust-term-0.4))))))
+
+(define-public rust-raw-window-handle-0.3
+  (package
+    (name "rust-raw-window-handle")
+    (version "0.3.3")
+    (source
+     (origin
+       (method url-fetch)
+       (uri (crate-uri "raw-window-handle" version))
+       (file-name
+        (string-append name "-" version ".tar.gz"))
+       (sha256
+        (base32
+         "04c2wir7qq3g2b143yav52a1g5ack8ffqx2bpmrn9bc0dix1li0a"))))
+    (build-system cargo-build-system)
+    (arguments
+     `(#:cargo-inputs (("rust-libc" ,rust-libc-0.2))))
+    (home-page "https://github.com/rust-windowing/raw-window-handle")
+    (synopsis "Interoperability library for Rust Windowing applications")
+    (description
+     "Interoperability library for Rust Windowing applications.")
+    (license license:expat)))
+
+(define-public rust-resize-0.3
+  (package
+    (name "rust-resize")
+    (version "0.3.1")
+    (source
+      (origin
+        (method url-fetch)
+        (uri (crate-uri "resize" version))
+        (file-name
+         (string-append name "-" version ".tar.gz"))
+        (sha256
+         (base32
+          "1ai83laz5yvg4r7z9q8d1m0vq0fqj2ycyprw5fxzxyzaj3im7rmr"))))
+    (build-system cargo-build-system)
+    (arguments
+     `(#:cargo-development-inputs
+       (("rust-png" ,rust-png-0.15))))
+    (home-page "https://github.com/PistonDevelopers/resize")
+    (synopsis "Simple image resampling library in pure Rust")
+    (description
+     "This package provides a simple image resampling library in pure Rust.")
+    (license license:expat)))
+
+(define-public rust-rgb-0.8
+  (package
+    (name "rust-rgb")
+    (version "0.8.20")
+    (source
+     (origin
+       (method url-fetch)
+       (uri (crate-uri "rgb" version))
+       (file-name (string-append name "-" version ".crate"))
+       (sha256
+        (base32
+         "1620mn5dp1rr9fpvd9wbr3b8l2g4zrij8zjri1x34cg1bas59vwh"))))
+    (build-system cargo-build-system)
+    (arguments
+     `(#:cargo-inputs
+       (("rust-bytemuck" ,rust-bytemuck-1)
+        ("rust-serde" ,rust-serde-1))
+       #:cargo-development-inputs
+       (("rust-serde-json" ,rust-serde-json-1))))
+    (home-page "https://lib.rs/crates/rgb")
+    (synopsis "Struct for sharing pixels between crates")
+    (description
+     "This package provides @code{struct RGB/RGBA/etc.} for sharing pixels
+between crates + convenience methods for color manipulation.  It allows no-copy
+high-level interoperability.  It also adds common convenience methods and
+implements standard Rust traits to make `RGB`/`RGBA` pixels and slices
+first-class Rust objects.")
+    (license license:expat)))
+
+(define-public rust-smithay-client-toolkit-0.6
+  (package
+    (name "rust-smithay-client-toolkit")
+    (version "0.6.4")
+    (source
+     (origin
+       (method url-fetch)
+       (uri (crate-uri "smithay-client-toolkit" version))
+       (file-name
+        (string-append name "-" version ".tar.gz"))
+       (sha256
+        (base32
+         "0m20687zs36l6xak2s5k9s7qp78ly8xfjpbmrhacp7whfn4hx5lk"))))
+    (build-system cargo-build-system)
+    (arguments
+     `(#:cargo-inputs
+       (("rust-andrew" ,rust-andrew-0.2)
+        ("rust-bitflags" ,rust-bitflags-1)
+        ("rust-dlib" ,rust-dlib-0.4)
+        ("rust-lazy-static" ,rust-lazy-static-1)
+        ("rust-memmap" ,rust-memmap-0.7)
+        ("rust-nix" ,rust-nix-0.14)
+        ("rust-wayland-client" ,rust-wayland-client-0.23)
+        ("rust-wayland-protocols" ,rust-wayland-protocols-0.23))
+       #:cargo-development-inputs
+       (("rust-byteorder" ,rust-byteorder-1)
+        ("rust-image" ,rust-image-0.21)
+        ("rust-wayland-client" ,rust-wayland-client-0.23))))
+    (home-page "https://github.com/smithay/client-toolkit")
+    (synopsis "Toolkit for making client wayland applications")
+    (description
+     "Toolkit for making client wayland applications.")
+    (license license:expat)))
+
+(define-public rust-smithay-client-toolkit-0.4
+  (package
+    (inherit rust-smithay-client-toolkit-0.6)
+    (name "rust-smithay-client-toolkit")
+    (version "0.4.6")
+    (source
+     (origin
+       (method url-fetch)
+       (uri (crate-uri "smithay-client-toolkit" version))
+       (file-name
+        (string-append name "-" version ".tar.gz"))
+       (sha256
+        (base32
+         "1yj8yzd0lhqpsgq0x4iikl9a02q2hnkky81brk938alv0ibqrjrc"))))
+    (arguments
+     `(#:cargo-inputs
+       (("rust-andrew" ,rust-andrew-0.2)
+        ("rust-bitflags" ,rust-bitflags-1)
+        ("rust-dlib" ,rust-dlib-0.4)
+        ("rust-lazy-static" ,rust-lazy-static-1)
+        ("rust-memmap" ,rust-memmap-0.7)
+        ("rust-nix" ,rust-nix-0.14)
+        ("rust-wayland-client" ,rust-wayland-client-0.21)
+        ("rust-wayland-commons" ,rust-wayland-commons-0.21)
+        ("rust-wayland-protocols" ,rust-wayland-protocols-0.21))
+       #:cargo-development-inputs
+       (("rust-byteorder" ,rust-byteorder-1)
+        ("rust-image" ,rust-image-0.20)
+        ("rust-wayland-client" ,rust-wayland-client-0.21))))))
+
+(define-public rust-smithay-clipboard-0.3
+  (package
+    (name "rust-smithay-clipboard")
+    (version "0.3.6")
+    (source
+     (origin
+       (method url-fetch)
+       (uri (crate-uri "smithay-clipboard" version))
+       (file-name
+        (string-append name "-" version ".tar.gz"))
+       (sha256
+        (base32
+         "1h7qhcx44cgwncgpn5llky0c56vgsg9mqrkybb2z37vsxxia4rwn"))))
+    (build-system cargo-build-system)
+    (arguments
+     `(#:cargo-inputs
+       (("rust-nix" ,rust-nix-0.14)
+        ("rust-smithay-client-toolkit" ,rust-smithay-client-toolkit-0.6))
+       #:cargo-development-inputs
+       (("rust-andrew" ,rust-andrew-0.2))))
+    (inputs
+     `(("wayland" ,wayland)))
+    (home-page "https://github.com/smithay/smithay-clipboard")
+    (synopsis
+     "Provides access to the wayland clipboard for client applications")
+    (description
+     "This package provides access to the wayland clipboard for client applications.")
+    (license license:expat)))
+
+(define-public rust-tiff-0.5
+  (package
+    (name "rust-tiff")
+    (version "0.5.0")
+    (source
+      (origin
+        (method url-fetch)
+        (uri (crate-uri "tiff" version))
+        (file-name
+         (string-append name "-" version ".tar.gz"))
+        (sha256
+         (base32
+          "0bzzvxcx21pzryxgd7x7a1himiqs2y4k55754wzlr56sqj3qlfrz"))))
+    (build-system cargo-build-system)
+    (arguments
+     `(#:tests? #f      ; not all test files included
+       #:cargo-inputs
+       (("rust-byteorder" ,rust-byteorder-1)
+        ("rust-lzw" ,rust-lzw-0.10)
+        ("rust-miniz-oxide" ,rust-miniz-oxide-0.3))))
+    (home-page "https://github.com/image-rs/image-tiff")
+    (synopsis
+     "TIFF decoding and encoding library in pure Rust")
+    (description
+     "TIFF decoding and encoding library in pure Rust.")
+    (license license:expat)))
+
+(define-public rust-tiff-0.3
+  (package
+    (inherit rust-tiff-0.5)
+    (name "rust-tiff")
+    (version "0.3.1")
+    (source
+     (origin
+       (method url-fetch)
+       (uri (crate-uri "tiff" version))
+       (file-name
+        (string-append name "-" version ".tar.gz"))
+       (sha256
+        (base32
+         "0zgmbny2f8rssqmjdfvnysy0vqwcvlwl6q9f5yixhavlqk7w5dyp"))))
+    (arguments
+     `(#:tests? #f      ; Tests images not included with release.
+       #:cargo-inputs
+       (("rust-byteorder" ,rust-byteorder-1)
+        ("rust-lzw" ,rust-lzw-0.10)
+        ("rust-num-derive" ,rust-num-derive-0.2)
+        ("rust-num-traits" ,rust-num-traits-0.2))
+       #:cargo-development-inputs
+       (("rust-tempfile" ,rust-tempfile-3))))))
+
+(define-public rust-tiff-0.2
+  (package
+    (inherit rust-tiff-0.3)
+    (name "rust-tiff")
+    (version "0.2.2")
+    (source
+     (origin
+       (method url-fetch)
+       (uri (crate-uri "tiff" version))
+       (file-name
+        (string-append name "-" version ".tar.gz"))
+       (sha256
+        (base32
+         "1kn7psgpacns337vvqh272rkqwnakmjd51rc7ygwnc03ibr38j0y"))))
+    (arguments
+     `(#:cargo-inputs
+       (("rust-byteorder" ,rust-byteorder-1)
+        ("rust-lzw" ,rust-lzw-0.10)
+        ("rust-num-derive" ,rust-num-derive-0.2)
+        ("rust-num-traits" ,rust-num-traits-0.2))))))
+
+(define-public rust-wayland-client-0.23
+  (package
+    (name "rust-wayland-client")
+    (version "0.23.6")
+    (source
+     (origin
+       (method url-fetch)
+       (uri (crate-uri "wayland-client" version))
+       (file-name
+        (string-append name "-" version ".tar.gz"))
+       (sha256
+        (base32
+         "1nmw2kz70llc5mxwzg6bglnqy0qnyr9224zjmq9czazgw3mq045g"))))
+    (build-system cargo-build-system)
+    (arguments
+     `(#:cargo-inputs
+       (("rust-bitflags" ,rust-bitflags-1)
+        ("rust-calloop" ,rust-calloop-0.4)
+        ("rust-downcast-rs" ,rust-downcast-rs-1.1)
+        ("rust-libc" ,rust-libc-0.2)
+        ("rust-mio" ,rust-mio-0.6)
+        ("rust-nix" ,rust-nix-0.14)
+        ("rust-wayland-commons" ,rust-wayland-commons-0.23)
+        ("rust-wayland-sys" ,rust-wayland-sys-0.23)
+        ("rust-wayland-scanner" ,rust-wayland-scanner-0.23))
+       #:cargo-development-inputs
+       (("rust-byteorder" ,rust-byteorder-1)
+        ("rust-tempfile" ,rust-tempfile-3))))
+    (home-page "https://github.com/smithay/wayland-rs")
+    (synopsis
+     "Rust bindings to the standard C implementation of the wayland protocol")
+    (description
+     "This package provides Rust bindings to the standard C implementation of
+the wayland protocol, client side.")
+    (license license:expat)))
+
+(define-public rust-wayland-client-0.21
+  (package
+    (inherit rust-wayland-client-0.23)
+    (name "rust-wayland-client")
+    (version "0.21.13")
+    (source
+     (origin
+       (method url-fetch)
+       (uri (crate-uri "wayland-client" version))
+       (file-name
+        (string-append name "-" version ".tar.gz"))
+       (sha256
+        (base32
+         "04r7dy074hhdalsi1day482wvmczr40hg7qvrnzkgxpakrgkx5j9"))))
+    (arguments
+     `(#:cargo-inputs
+       (("rust-bitflags" ,rust-bitflags-1)
+        ("rust-calloop" ,rust-calloop-0.4)
+        ("rust-downcast-rs" ,rust-downcast-rs-1.1)
+        ("rust-libc" ,rust-libc-0.2)
+        ("rust-mio" ,rust-mio-0.6)
+        ("rust-nix" ,rust-nix-0.14)
+        ("rust-wayland-commons" ,rust-wayland-commons-0.21)
+        ("rust-wayland-sys" ,rust-wayland-sys-0.21)
+        ("rust-wayland-scanner" ,rust-wayland-scanner-0.21))
+       #:cargo-development-inputs
+       (("rust-byteorder" ,rust-byteorder-1)
+        ("rust-tempfile" ,rust-tempfile-3))))))
+
+(define-public rust-wayland-commons-0.23
+  (package
+    (name "rust-wayland-commons")
+    (version "0.23.6")
+    (source
+     (origin
+       (method url-fetch)
+       (uri (crate-uri "wayland-commons" version))
+       (file-name
+        (string-append name "-" version ".tar.gz"))
+       (sha256
+        (base32
+         "1nyvcs6xxxzqgh0wvc7z0fgi89bf3h9p4qrbf77bnfbwlb8v0rmv"))))
+    (build-system cargo-build-system)
+    (arguments
+     `(#:cargo-inputs
+       (("rust-nix" ,rust-nix-0.14)
+        ("rust-wayland-sys" ,rust-wayland-sys-0.23))))
+    (home-page "https://github.com/smithay/wayland-rs")
+    (synopsis
+     "Common types and structures used by wayland-client and wayland-server")
+    (description
+     "Common types and structures used by wayland-client and wayland-server.")
+    (license license:expat)))
+
+(define-public rust-wayland-commons-0.21
+  (package
+    (inherit rust-wayland-commons-0.23)
+    (name "rust-wayland-commons")
+    (version "0.21.13")
+    (source
+     (origin
+       (method url-fetch)
+       (uri (crate-uri "wayland-commons" version))
+       (file-name
+        (string-append name "-" version ".tar.gz"))
+       (sha256
+        (base32
+         "1v1jpcsnn6cwwy5ii5pdl58i6b9slmi8mn4my4fpwrlbfsb8ih20"))))
+    (arguments
+     `(#:cargo-inputs
+       (("rust-nix" ,rust-nix-0.14)
+        ("rust-wayland-sys" ,rust-wayland-sys-0.21))))))
+
+(define-public rust-wayland-protocols-0.23
+  (package
+    (name "rust-wayland-protocols")
+    (version "0.23.6")
+    (source
+     (origin
+       (method url-fetch)
+       (uri (crate-uri "wayland-protocols" version))
+       (file-name
+        (string-append name "-" version ".tar.gz"))
+       (sha256
+        (base32
+         "1ygwbzqlnks5xzafka3c8ag6k92g2h6ygj2xsmvjfx2n6rj8dhkc"))))
+    (build-system cargo-build-system)
+    (arguments
+     `(#:cargo-inputs
+       (("rust-bitflags" ,rust-bitflags-1)
+        ("rust-wayland-client" ,rust-wayland-client-0.23)
+        ("rust-wayland-commons" ,rust-wayland-commons-0.23)
+        ("rust-wayland-server" ,rust-wayland-server-0.23)
+        ("rust-wayland-scanner" ,rust-wayland-scanner-0.23))))
+    (home-page "https://github.com/smithay/wayland-rs")
+    (synopsis
+     "Generated API for the officials wayland protocol extensions")
+    (description
+     "Generated API for the officials wayland protocol extensions.")
+    (license license:expat)))
+
+(define-public rust-wayland-protocols-0.21
+  (package
+    (inherit rust-wayland-protocols-0.23)
+    (name "rust-wayland-protocols")
+    (version "0.21.13")
+    (source
+     (origin
+       (method url-fetch)
+       (uri (crate-uri "wayland-protocols" version))
+       (file-name
+        (string-append name "-" version ".tar.gz"))
+       (sha256
+        (base32
+         "0i91yh3nxk9llhly2ly3nvlfx0lbpvyq919cgmnyx3j25bmf5zaa"))))
+    (arguments
+     `(#:cargo-inputs
+       (("rust-bitflags" ,rust-bitflags-1)
+        ("rust-wayland-client" ,rust-wayland-client-0.21)
+        ("rust-wayland-commons" ,rust-wayland-commons-0.21)
+        ("rust-wayland-server" ,rust-wayland-server-0.21)
+        ("rust-wayland-sys" ,rust-wayland-sys-0.21)
+        ("rust-wayland-scanner" ,rust-wayland-scanner-0.21))))))
+
+(define-public rust-wayland-scanner-0.23
+  (package
+    (name "rust-wayland-scanner")
+    (version "0.23.6")
+    (source
+     (origin
+       (method url-fetch)
+       (uri (crate-uri "wayland-scanner" version))
+       (file-name
+        (string-append name "-" version ".tar.gz"))
+       (sha256
+        (base32
+         "0g8wcphykjrcpslznyi3qccx1pckw97rckq5b295nfbg6r3j5c4k"))))
+    (build-system cargo-build-system)
+    (arguments
+     `(#:cargo-inputs
+       (("rust-proc-macro2" ,rust-proc-macro2-0.4)
+        ("rust-quote" ,rust-quote-0.6)
+        ("rust-xml-rs" ,rust-xml-rs-0.8))))
+    (home-page "https://github.com/smithay/wayland-rs")
+    (synopsis "Generate Rust APIs from XML Wayland protocol files")
+    (description
+     "Wayland Scanner generates Rust APIs from XML Wayland protocol files.
+It is intended for use with wayland-sys.  You should only need this crate if
+you are working on custom Wayland protocol extensions.
+Look at the wayland-client crate for usable bindings.")
+    (license license:expat)))
+
+(define-public rust-wayland-scanner-0.21
+  (package
+    (inherit rust-wayland-scanner-0.23)
+    (name "rust-wayland-scanner")
+    (version "0.21.13")
+    (source
+     (origin
+       (method url-fetch)
+       (uri (crate-uri "wayland-scanner" version))
+       (file-name
+        (string-append name "-" version ".tar.gz"))
+       (sha256
+        (base32
+         "17mp49v7w0p0x5ry628lj2llljnwkr9aj9g4bqqhfibid32jhf5z"))))))
+
+(define-public rust-wayland-server-0.23
+  (package
+    (name "rust-wayland-server")
+    (version "0.23.6")
+    (source
+     (origin
+       (method url-fetch)
+       (uri (crate-uri "wayland-server" version))
+       (file-name
+        (string-append name "-" version ".tar.gz"))
+       (sha256
+        (base32
+         "1ccsalq6gnf07klnbjx2dxcbibhw03rqsgi578p913s3zsjlcg8a"))))
+    (build-system cargo-build-system)
+    (arguments
+     `(#:cargo-inputs
+       (("rust-bitflags" ,rust-bitflags-1)
+        ("rust-calloop" ,rust-calloop-0.4)
+        ("rust-downcast-rs" ,rust-downcast-rs-1.1)
+        ("rust-libc" ,rust-libc-0.2)
+        ("rust-mio" ,rust-mio-0.6)
+        ("rust-nix" ,rust-nix-0.14)
+        ("rust-wayland-commons" ,rust-wayland-commons-0.23)
+        ("rust-wayland-sys" ,rust-wayland-sys-0.23)
+        ("rust-wayland-scanner" ,rust-wayland-scanner-0.23))))
+    (home-page "https://github.com/smithay/wayland-rs")
+    (synopsis
+     "Bindings to the standard C implementation of the wayland protocol")
+    (description
+     "This package provides Rust bindings to the standard C implementation of
+the wayland protocol, server side.")
+    (license license:expat)))
+
+(define-public rust-wayland-server-0.21
+  (package
+    (inherit rust-wayland-server-0.23)
+    (name "rust-wayland-server")
+    (version "0.21.13")
+    (source
+     (origin
+       (method url-fetch)
+       (uri (crate-uri "wayland-server" version))
+       (file-name
+        (string-append name "-" version ".tar.gz"))
+       (sha256
+        (base32
+         "0ayn4wlrpg0fw04prri9awpkjvbzjil0d3l3a8zs9pdbnspvw6ah"))))
+    (arguments
+     `(#:cargo-inputs
+       (("rust-bitflags" ,rust-bitflags-1)
+        ("rust-calloop" ,rust-calloop-0.4)
+        ("rust-downcast-rs" ,rust-downcast-rs-1.1)
+        ("rust-libc" ,rust-libc-0.2)
+        ("rust-mio" ,rust-mio-0.6)
+        ("rust-nix" ,rust-nix-0.14)
+        ("rust-wayland-commons" ,rust-wayland-commons-0.21)
+        ("rust-wayland-sys" ,rust-wayland-sys-0.21)
+        ("rust-wayland-scanner" ,rust-wayland-scanner-0.21))))))
+
+(define-public rust-wayland-sys-0.23
+  (package
+    (name "rust-wayland-sys")
+    (version "0.23.6")
+    (source
+     (origin
+       (method url-fetch)
+       (uri (crate-uri "wayland-sys" version))
+       (file-name
+        (string-append name "-" version ".tar.gz"))
+       (sha256
+        (base32
+         "1x2qafvj8hd2x5qfaan2dfpw9amg0f5g9sqrkdy7qvbddsl8jknr"))))
+    (build-system cargo-build-system)
+    (arguments
+     `(#:cargo-inputs
+       (("rust-dlib" ,rust-dlib-0.4)
+        ("rust-lazy-static" ,rust-lazy-static-1)
+        ("rust-libc" ,rust-libc-0.2))))
+    (home-page "https://github.com/smithay/wayland-rs")
+    (synopsis "FFI bindings to the various libwayland-*.so libraries")
+    (description
+     "FFI bindings to the various libwayland-*.so libraries.
+You should only need this crate if you are working on custom wayland
+protocol extensions.  Look at the crate wayland-client for usable bindings.")
+    (license license:expat)))
+
+(define-public rust-wayland-sys-0.21
+  (package
+    (inherit rust-wayland-sys-0.23)
+    (name "rust-wayland-sys")
+    (version "0.21.13")
+    (source
+     (origin
+       (method url-fetch)
+       (uri (crate-uri "wayland-sys" version))
+       (file-name
+        (string-append name "-" version ".tar.gz"))
+       (sha256
+        (base32
+         "0a0ndgkg98pvmkv44yya4f7mxzjaxylknqh64bpa05w0azyv02jj"))))))
+
+(define-public rust-winit-0.20
+  (package
+    (name "rust-winit")
+    (version "0.20.0-alpha6")
+    (source
+     (origin
+       (method url-fetch)
+       (uri (crate-uri "winit" version))
+       (file-name
+        (string-append name "-" version ".tar.gz"))
+       (sha256
+        (base32
+         "1g5cchl97zcg525j6jdr77yby8cmhwv1qqwcd3sf4l4zl263195z"))
+       (patches
+         (list
+           (origin
+             (method url-fetch)
+             (uri "https://github.com/rust-windowing/winit/commit/d1c6506865c7bddbb5fb4d80a613e43ddc1370b5.patch")
+             (file-name (string-append name "-fix-bindings.patch"))
+             (sha256
+              (base32
+               "03q4bvdq86kii53d0vsywv08g8vqirf9h1lz2cl6rcc7gjfynpds")))))))
+    (build-system cargo-build-system)
+    (arguments
+     `(#:cargo-inputs
+       (("rust-android-glue" ,rust-android-glue-0.2)
+        ("rust-bitflags" ,rust-bitflags-1)
+        ("rust-calloop" ,rust-calloop-0.4)
+        ("rust-cocoa" ,rust-cocoa-0.19)
+        ("rust-core-foundation" ,rust-core-foundation-0.6)
+        ("rust-core-graphics" ,rust-core-graphics-0.17)
+        ("rust-core-video-sys" ,rust-core-video-sys-0.1)
+        ("rust-dispatch" ,rust-dispatch-0.1)
+        ("rust-instant" ,rust-instant-0.1)
+        ("rust-lazy-static" ,rust-lazy-static-1)
+        ("rust-libc" ,rust-libc-0.2)
+        ("rust-log" ,rust-log-0.4)
+        ("rust-objc" ,rust-objc-0.2)
+        ("rust-parking-lot" ,rust-parking-lot-0.10)
+        ("rust-percent-encoding" ,rust-percent-encoding-2)
+        ("rust-raw-window-handle" ,rust-raw-window-handle-0.3)
+        ("rust-serde" ,rust-serde-1)
+        ("rust-smithay-client-toolkit" ,rust-smithay-client-toolkit-0.6)
+        ("rust-stdweb" ,rust-stdweb-0.4)
+        ("rust-wasm-bindgen" ,rust-wasm-bindgen-0.2)
+        ("rust-wayland-client" ,rust-wayland-client-0.23)
+        ("rust-web-sys" ,rust-web-sys-0.3)
+        ("rust-winapi" ,rust-winapi-0.3)
+        ("rust-x11-dl" ,rust-x11-dl-2))
+       #:cargo-development-inputs
+       (("rust-console-log" ,rust-console-log-0.1)
+        ("rust-env-logger" ,rust-env-logger-0.5)
+        ("rust-image" ,rust-image-0.21))))
+    (home-page "https://github.com/rust-windowing/winit")
+    (synopsis
+     "Cross-platform window creation library")
+    (description
+     "Cross-platform window creation library.")
+    (license license:asl2.0)))
+
+(define-public rust-winit-0.19
+  (package
+    (inherit rust-winit-0.20)
+    (name "rust-winit")
+    (version "0.19.5")
+    (source
+     (origin
+       (method url-fetch)
+       (uri (crate-uri "winit" version))
+       (file-name
+        (string-append name "-" version ".tar.gz"))
+       (sha256
+        (base32
+         "1a4lnfyvlc4jabhs30wlmkgdjv7qhbplmyp833kl7ykjni5yp5hy"))))
+    (arguments
+     `(#:cargo-inputs
+       (("rust-android-glue" ,rust-android-glue-0.2)
+        ("rust-backtrace" ,rust-backtrace-0.3)
+        ("rust-bitflags" ,rust-bitflags-1)
+        ("rust-cocoa" ,rust-cocoa-0.18)
+        ("rust-core-foundation" ,rust-core-foundation-0.6)
+        ("rust-core-graphics" ,rust-core-graphics-0.17)
+        ("rust-image" ,rust-image-0.21)
+        ("rust-lazy-static" ,rust-lazy-static-1)
+        ("rust-libc" ,rust-libc-0.2)
+        ("rust-log" ,rust-log-0.4)
+        ("rust-objc" ,rust-objc-0.2)
+        ("rust-parking-lot" ,rust-parking-lot-0.9)
+        ("rust-percent-encoding" ,rust-percent-encoding-2)
+        ("rust-raw-window-handle" ,rust-raw-window-handle-0.3)
+        ("rust-serde" ,rust-serde-1)
+        ("rust-smithay-client-toolkit" ,rust-smithay-client-toolkit-0.4)
+        ("rust-wayland-client" ,rust-wayland-client-0.21)
+        ("rust-winapi" ,rust-winapi-0.3)
+        ("rust-x11-dl" ,rust-x11-dl-2))))))
+
+(define-public rust-x11-2
+  (package
+    (name "rust-x11")
+    (version "2.18.1")
+    (source
+     (origin
+       (method url-fetch)
+       (uri (crate-uri "x11" version))
+       (file-name
+        (string-append name "-" version ".tar.gz"))
+       (sha256
+        (base32
+         "0dg2d0yrqmwg6prpxkw3vpmwzwxnaki2cn0v64ylh5gp4cqpws9r"))))
+    (build-system cargo-build-system)
+    (arguments
+     `(#:cargo-inputs
+       (("rust-libc" ,rust-libc-0.2)
+        ("rust-pkg-config" ,rust-pkg-config-0.3))))
+    (home-page "https://github.com/erlepereira/x11-rs.git")
+    (synopsis "X11 library bindings for Rust")
+    (description "X11 library bindings for Rust.")
+    (license license:cc0)))
+
+(define-public rust-x11-clipboard-0.4
+  (package
+    (name "rust-x11-clipboard")
+    (version "0.4.0")
+    (source
+     (origin
+       (method url-fetch)
+       (uri (crate-uri "x11-clipboard" version))
+       (file-name
+        (string-append name "-" version ".tar.gz"))
+       (sha256
+        (base32
+         "0nqdnswiyj28b1izjp5rzbc67cxpb5c8p4vh1xyndkirzs84vqqk"))))
+    (build-system cargo-build-system)
+    (arguments
+     `(#:tests? #f  ; Tests require display server.
+       #:cargo-inputs (("rust-xcb" ,rust-xcb-0.9))))
+    (native-inputs
+     `(("python" ,python)))
+    (home-page "https://github.com/quininer/x11-clipboard")
+    (synopsis "x11 clipboard support for Rust")
+    (description "This package provides x11 clipboard support for Rust.")
+    (license license:expat)))
+
+(define-public rust-x11-dl-2
+  (package
+    (name "rust-x11-dl")
+    (version "2.18.5")
+    (source
+     (origin
+       (method url-fetch)
+       (uri (crate-uri "x11-dl" version))
+       (file-name
+        (string-append name "-" version ".tar.gz"))
+       (sha256
+        (base32 "1y7yq4sfvv56shk4v3s7gvlrwk9d0migj622fl4i4c5klpiq3y9b"))))
+    (build-system cargo-build-system)
+    (arguments
+     `(#:cargo-inputs
+       (("rust-lazy-static" ,rust-lazy-static-1)
+        ("rust-libc" ,rust-libc-0.2)
+        ("rust-maybe-uninit" ,rust-maybe-uninit-2.0)
+        ("rust-pkg-config" ,rust-pkg-config-0.3))))
+    (home-page "https://github.com/erlepereira/x11-rs.git")
+    (synopsis "X11 library bindings for Rust")
+    (description "This package provides X11 library bindings for Rust.")
+    (license license:cc0)))
+
+(define-public rust-y4m-0.5
+  (package
+    (name "rust-y4m")
+    (version "0.5.3")
+    (source
+      (origin
+        (method url-fetch)
+        (uri (crate-uri "y4m" version))
+        (file-name
+          (string-append name "-" version ".tar.gz"))
+        (sha256
+         (base32
+          "1933677by64y06zfgip2yq8b2dza8xnljhaksx93czq90b54kscz"))))
+    (build-system cargo-build-system)
+    (arguments
+     `(#:cargo-development-inputs
+       (("rust-resize" ,rust-resize-0.3))))
+    (home-page "https://github.com/image-rs/y4m")
+    (synopsis "YUV4MPEG2 (.y4m) Encoder/Decoder.")
+    (description "YUV4MPEG2 (.y4m) Encoder/Decoder.")
+    (license license:expat)))