code:
;;; GNU Guix --- Functional package management for GNU
;;; Copyright © 2017, 2018 Rutger Helling <rhelling@mykolab.com>
;;; Copyright © 2018 Tobias Geerinckx-Rice <me@tobias.gr>
;;; Copyright © 2018 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 vulkan)
  #:use-module ((guix licenses) #:prefix license:)
  #:use-module (guix packages)
  #:use-module (guix download)
  #:use-module (guix git-download)
  #:use-module (guix build-system cmake)
  #:use-module (guix build-system gnu)
  #:use-module (guix build-system meson)
  #:use-module (gnu packages)
  #:use-module (gnu packages autotools)
  #:use-module (gnu packages bison)
  #:use-module (gnu packages check)
  #:use-module (gnu packages cmake)
  #:use-module (gnu packages freedesktop)
  #:use-module (gnu packages gettext)
  #:use-module (gnu packages gl)
  #:use-module (gnu packages pkg-config)
  #:use-module (gnu packages python)
  #:use-module (gnu packages wine)
  #:use-module (gnu packages xorg))

(define-public spirv-headers
  ;; Keep updated in accordance with
  ;; https://github.com/google/shaderc/blob/known-good/known_good.json
  (let ((commit "3ce3e49d73b8abbf2ffe33f829f941fb2a40f552")
        (revision "3"))
    (package
      (name "spirv-headers")
      (version (string-append "0.0-" revision "." (string-take commit 9)))
      (source
       (origin
         (method git-fetch)
         (uri (git-reference
               (url "https://github.com/KhronosGroup/SPIRV-Headers")
               (commit commit)))
         (sha256
          (base32
           "0yk4bzqifdqpmdxkhvrxbdqhf5ngkga0ig1yyz7khr7rklqfz7wp"))
         (file-name (string-append name "-" version "-checkout"))))
      (build-system cmake-build-system)
      (arguments
       `(#:tests? #f ;; No tests
         #:phases (modify-phases %standard-phases
                    (replace 'install
                      (lambda* (#:key outputs #:allow-other-keys)
                        (invoke "cmake" "-E" "copy_directory"
                                        "../source/include/spirv"
                                        (string-append (assoc-ref outputs "out")
                                                       "/include/spirv")))))))
      (home-page "https://github.com/KhronosGroup/SPIRV-Headers")
      (synopsis "Machine-readable files from the SPIR-V Registry")
      (description
       "SPIRV-Headers is a repository containing machine-readable files from
the SPIR-V Registry.  This includes:
@itemize
@item Header files for various languages.
@item JSON files describing the grammar for the SPIR-V core instruction set,
and for the GLSL.std.450 extended instruction set.
@item The XML registry file.
@end itemize\n")
      (license (license:x11-style
                (string-append "https://github.com/KhronosGroup/SPIRV-Headers/blob/"
                               commit "/LICENSE"))))))

(define-public spirv-tools
  ;; Keep updated in accordance with
  ;; https://github.com/google/shaderc/blob/known-good/known_good.json
  (let ((commit "fe2fbee294a8ad4434f828a8b4d99eafe9aac88c")
        (revision "2"))
    (package
     (name "spirv-tools")
     (version (string-append "0.0-" revision "." (string-take commit 9)))
     (source
      (origin
       (method git-fetch)
       (uri (git-reference
             (url "https://github.com/KhronosGroup/SPIRV-Tools")
             (commit commit)))
       (sha256
        (base32
         "03rq4ypwqnz34n8ip85n95a3b9rxb34j26azzm3b3invaqchv19x"))
       (file-name (string-append name "-" version "-checkout"))))
     (build-system cmake-build-system)
     (arguments
      `(#:tests? #f ; FIXME: Tests fail.
        #:configure-flags (list (string-append "-DSPIRV-Headers_SOURCE_DIR="
                                               (assoc-ref %build-inputs
                                                          "spirv-headers")))))
     (inputs `(("spirv-headers" ,spirv-headers)))
     (native-inputs `(("pkg-config" ,pkg-config)
                      ("python" ,python)))
     (home-page "https://github.com/KhronosGroup/SPIRV-Tools")
     (synopsis "API and commands for processing SPIR-V modules")
     (description
      "The SPIR-V Tools project provides an API and commands for processing
SPIR-V modules.  The project includes an assembler, binary module parser,
disassembler, validator, and optimizer for SPIR-V.")
     (license license:asl2.0))))

(define-public glslang
  ;; Keep updated in accordance with
  ;; https://github.com/google/shaderc/blob/known-good/known_good.json
  (let ((commit "32d3ec319909fcad0b2b308fe1635198773e8316")
        (revision "3"))
    (package
      (name "glslang")
      (version (string-append "3.0-" revision "." (string-take commit 9)))
      (source
       (origin
         (method git-fetch)
         (uri (git-reference
               (url "https://github.com/KhronosGroup/glslang")
               (commit commit)))
         (sha256
          (base32
           "1kmgjv5kbrjy6azpgwnjcn3cj8vg5i8hnyk3m969sc0gq2j1rbjj"))
         (file-name (string-append name "-" version "-checkout"))))
      (build-system cmake-build-system)
      (arguments
       `(#:tests? #f ;; No tests
         ;; glslang tries to set CMAKE_INSTALL_PREFIX manually. Remove the
         ;; offending line.
         #:phases (modify-phases %standard-phases
                    (add-after 'patch-source-shebangs 'fix-cmakelists
                      (lambda _
                        (substitute* "CMakeLists.txt"
                          (("set.*CMAKE_INSTALL_PREFIX.*") ""))
                        #t)))))
      (native-inputs `(("bison" ,bison)
                       ("pkg-config" ,pkg-config)))
      (home-page "https://github.com/KhronosGroup/glslang")
      (synopsis "OpenGL and OpenGL ES shader front end and validator")
      (description
       "Glslang is the official reference compiler front end for the
OpenGL@tie{}ES and OpenGL shading languages.  It implements a strict
interpretation of the specifications for these languages.")
      ;; Modified BSD license. See "copyright" section of
      ;; https://www.khronos.org/opengles/sdk/tools/Reference-Compiler/
      (license (list license:bsd-3
                     ;; include/SPIRV/{bitutils,hex_float}.h are Apache 2.0.
                     license:asl2.0)))))

(define-public vulkan-headers
  (package
    (name "vulkan-headers")
    (version "1.1.82.0")
    (source
     (origin
       (method url-fetch)
       (uri (string-append
             "https://github.com/KhronosGroup/Vulkan-Headers/"
             "archive/sdk-" version ".tar.gz"))
       (sha256
        (base32
         "1rbra47f1dkw5bjzvm0k9s2f89c2x80j904ply4bxks7sl3xlwyz"))))
    (build-system cmake-build-system)
    (arguments
     `(#:tests? #f)) ; No tests.
    (home-page
     "https://github.com/KhronosGroup/Vulkan-Headers")
    (synopsis "Vulkan Header files and API registry")
    (description
     "Vulkan-Headers contains header files and API registry for Vulkan.")
    (license (list license:asl2.0)))) ;LICENSE.txt

(define-public vulkan-loader
  (package
    (name "vulkan-loader")
    (version (package-version vulkan-headers))
    (source
     (origin
       (method url-fetch)
       (uri (string-append
             "https://github.com/KhronosGroup/Vulkan-Loader/"
             "archive/sdk-" version ".tar.gz"))
       (sha256
        (base32
         "032vfysb8mi19c2lx08vc6k9mbzxmiy17wp7a22vpgwwv69kxkc6"))))
    (build-system cmake-build-system)
    (arguments
     `(#:tests? #f ;FIXME: 23/39 tests fail.  Try "tests/run_all_tests.sh".
       #:phases
       (modify-phases %standard-phases
         (add-after 'unpack 'remove-spirv-tools-commit-id
           (lambda* (#:key inputs #:allow-other-keys)
             ;; Remove lines trying to build in a git commit id.
             (substitute* "CMakeLists.txt" ((".*spirv_tools_commit_id.h.*") ""))
             #t)))
       #:configure-flags (list
                          "-DBUILD_LAYERS=OFF" ; FIXME: Fails to build.
                          "-DBUILD_TESTS=OFF" ; FIXME: Needs 'googletest' submodule.
                          (string-append "-DCMAKE_INSTALL_LIBDIR="
                                              (assoc-ref %outputs "out") "/lib"))))
    (inputs `(("glslang" ,glslang)
              ("libxcb" ,libxcb)
              ("libx11" ,libx11)
              ("libxrandr" ,libxrandr)
              ("mesa" ,mesa)
              ("spirv-tools" ,spirv-tools)
              ("vulkan-headers" ,vulkan-headers)
              ("wayland" ,wayland)))
    (native-inputs `(("pkg-config" ,pkg-config)
                     ("python" ,python)))
    (home-page
     "https://github.com/KhronosGroup/Vulkan-Loader")
    (synopsis "Khronos official ICD loader and validation layers for Vulkan")
    (description
     "Vulkan allows multiple @dfn{Installable Client Drivers} (ICDs) each
supporting one or more devices to be used collectively.  The loader is
responsible for discovering available Vulkan ICDs on the system and inserting
Vulkan layer libraries, including validation layers between the application
and the ICD.")
    ;; This software is mainly Apache 2.0 licensed, but contains some components
    ;; covered by other licenses.  See COPYRIGHT.txt for details.
    (license (list license:asl2.0       ;LICENSE.txt
                   (license:x11-style "file://COPYRIGHT.txt")
                   license:bsd-3))))

(define-public vulkan-icd-loader
  (deprecated-package "vulkan-icd-loader" vulkan-loader))

(define-public vulkan-tools
  (package
    (name "vulkan-tools")
    (version (package-version vulkan-headers))
    (source
     (origin
       (method url-fetch)
       (uri (string-append
             "https://github.com/KhronosGroup/Vulkan-Tools/"
             "archive/sdk-" version ".tar.gz"))
       (sha256
        (base32
         "175qhfg9lxxfm5zks6jxaybcxamwd9q5kvjq8ikf2dbmskgybr92"))))
    (build-system cmake-build-system)
    (inputs
     `(("glslang" ,glslang)
       ("libxrandr" ,libxrandr)
       ("mesa" ,mesa)
       ("vulkan-headers" ,vulkan-headers)
       ("vulkan-loader" ,vulkan-loader)
       ("wayland" ,wayland)))
    (native-inputs
     `(("pkg-config" ,pkg-config)
       ("python" ,python)))
    (arguments
     `(#:tests? #f)) ; No tests.
    (home-page
     "https://github.com/KhronosGroup/Vulkan-Tools")
    (synopsis "Tools and utilities for Vulkan")
    (description
     "Vulkan-Tools provides tools and utilities that can assist development by
enabling developers to verify their applications correct use of the Vulkan
API.")
    (license (list license:asl2.0)))) ;LICENSE.txt

(define-public shaderc
  (let ((commit "be8e0879750303a1de09385465d6b20ecb8b380d")
        (revision "2"))
    (package
      (name "shaderc")
      (version (git-version "0.0.0" revision commit))
      (source
       (origin
         (method git-fetch)
         (uri (git-reference
               (url "https://github.com/google/shaderc")
               (commit commit)))
         (file-name (string-append name "-" version ".tar.gz"))
         (sha256
          (base32
           "16p25ry2i4zrj00zihfpf210f8xd7g398ffbw25igvi9mbn4nbfd"))))
      (build-system meson-build-system)
      (arguments
       `(#:tests? #f ; FIXME: Tests fail.
         #:phases
         (modify-phases %standard-phases
           (replace 'configure
             (lambda* (#:key outputs #:allow-other-keys)
               (let ((out (assoc-ref outputs "out")))
                 ;; Remove various lines and touch build-version.inc or
                 ;; configuring won't work.
                 (invoke "touch" "glslc/src/build-version.inc")
                 (substitute* "CMakeLists.txt" (("..PYTHON_EXE..*") ""))
                 (substitute* "CMakeLists.txt"
                   ((".*update_build_version.py..*") ""))
                 (substitute* "CMakeLists.txt"
                   ((".*add_custom_target.build-version.*") ""))
                 (substitute* "CMakeLists.txt"
                   ((".*spirv-tools_SOURCE_DIR.*glslang_SOURCE_DIR.*")
                    ""))
                 (substitute* "CMakeLists.txt"
                   ((".*Update build-version.inc.*") ""))
                 (substitute* "CMakeLists.txt" ((".*--check.*") ""))
                 (substitute* "glslc/src/main.cc" ((".*build-version.inc.*")
                                                   "\"1\""))
                 (invoke "cmake" "-GNinja" "-DCMAKE_BUILD_TYPE=Release"
                         "-DSHADERC_SKIP_TESTS=ON"
                         "-DCMAKE_INSTALL_LIBDIR=lib"
                         (string-append "-DCMAKE_INSTALL_PREFIX="
                                        out)))))
           (add-after 'unpack 'unpack-sources
             (lambda* (#:key inputs #:allow-other-keys)
               (let ((spirv-tools-source (assoc-ref inputs "spirv-tools-source"))
                     (spirv-headers-source (assoc-ref inputs "spirv-headers-source"))
                     (glslang-source (assoc-ref inputs "glslang-source")))
                 (copy-recursively spirv-tools-source "third_party/spirv-tools")
                 (copy-recursively spirv-headers-source
                                   (string-append "third_party/spirv-tools"
                                                  "/external/spirv-headers"))
                 (copy-recursively glslang-source "third_party/glslang")
                 #t))))))
      (inputs
       `(("googletest" ,googletest)
         ("python" ,python)))
      (native-inputs
       `(("cmake" ,cmake)
         ("glslang-source" ,(package-source glslang))
         ("pkg-config" ,pkg-config)
         ("spirv-headers-source" ,(package-source spirv-headers))
         ("spirv-tools-source" ,(package-source spirv-tools))))
      (home-page "https://github.com/google/shaderc")
      (synopsis "Tools for shader compilation")
      (description "Shaderc is a collection of tools, libraries, and tests for
shader compilation.")
      (license license:asl2.0))))

(define-public vkd3d
  (let ((commit "ecda316ef54d70bf1b3e860755241bb75873e53f")) ; Release 1.1.
    (package
     (name "vkd3d")
     (version "1.1")
     (source
      (origin
       (method git-fetch)
       (uri (git-reference
             (url "https://source.winehq.org/git/vkd3d.git")
             (commit commit)))
       (sha256
        (base32
         "05a28kspy8gzng181w28zjqdb3pj2ss83b0lwnppxbcdzsz7rvrf"))
       (file-name (string-append name "-" version "-checkout"))))
     (build-system gnu-build-system)
     (arguments
      `(#:configure-flags '("--with-spirv-tools")))
     (native-inputs
      `(("autoconf" ,autoconf)
        ("automake" ,automake)
        ("gettext" ,gnu-gettext)
        ("libtool" ,libtool)
        ("pkg-config" ,pkg-config)))
     (inputs
      `(("libx11" ,libx11)
        ("libxcb" ,libxcb)
        ("spirv-headers" ,spirv-headers)
        ("spirv-tools" ,spirv-tools)
        ("vulkan-headers" ,vulkan-headers)
        ("vulkan-loader" ,vulkan-loader)
        ("wine" ,wine) ; Needed for 'widl'.
        ("xcb-util" ,xcb-util)
        ("xcb-util-keysyms" ,xcb-util-keysyms)
        ("xcb-util-wm" ,xcb-util-wm)))
     (home-page "https://source.winehq.org/git/vkd3d.git/")
     (synopsis "Direct3D 12 to Vulkan translation library")
     (description "vkd3d is a library for translating Direct3D 12 to Vulkan.")
     (license license:lgpl2.1))))


code:
;;; GNU Guix --- Functional package management for GNU
;;; Copyright © 2013 Nikita Karetnikov <nikita@karetnikov.org>
;;; Copyright © 2016, 2017, 2018 Leo Famulari <leo@famulari.name>
;;; Copyright © 2016 Kei Kebreau <kkebreau@posteo.net>
;;; Copyright © 2016 Efraim Flashner <efraim@flashner.co.il>
;;; Copyright © 2018 Rutger Helling <rhelling@mykolab.com>
;;;
;;; 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 w3m)
  #:use-module ((guix licenses) #:select (x11-style))
  #:use-module (gnu packages gettext)
  #:use-module (gnu packages bdw-gc)
  #:use-module (gnu packages compression)
  #:use-module (gnu packages gtk)
  #:use-module (gnu packages ncurses)
  #:use-module (gnu packages perl)
  #:use-module (gnu packages pkg-config)
  #:use-module (gnu packages tls)
  #:use-module (gnu packages xorg)
  #:use-module (gnu packages)
  #:use-module (guix packages)
  #:use-module (guix git-download)
  #:use-module (guix build-system gnu))

(define-public w3m
  (package
    (name "w3m")
    (version "0.5.3+git20180125")
    (source (origin
              (method git-fetch)
              ;; Debian's fork of w3m is the only one that is still maintained.
              (uri (git-reference
                    (url "https://salsa.debian.org/debian/w3m.git")
                    (commit (string-append "v" version))))
              (file-name (git-file-name name version))
              (sha256
               (base32
                "0dafdfx1yhrvhbqzslkcapj09dvf64m2jadz3wl2icni0k4msq90"))))
    (build-system gnu-build-system)
    (arguments
     '(#:tests? #f  ; no check target
       ;; Use $EDITOR instead of a hard-coded value.
       #:configure-flags '("--with-editor=")
       #:phases
       (modify-phases %standard-phases
         (add-before 'configure 'fix-perl
           (lambda _ (substitute* '("scripts/w3mmail.cgi.in"
                                    "scripts/dirlist.cgi.in")
                       (("@PERL@") (which "perl")))
             #t)))))
    (inputs
     `(("gdk-pixbuf" ,gdk-pixbuf)
       ("libgc" ,libgc)
       ("libx11" ,libx11)
       ("ncurses" ,ncurses)
       ("openssl" ,openssl)
       ("zlib" ,zlib)))
    (native-inputs
     `(("gettext" ,gettext-minimal)
       ("perl" ,perl)
       ("pkg-config" ,pkg-config)))
    (home-page "http://w3m.sourceforge.net/")
    (synopsis "Text-mode web browser")
    (description
     "w3m is a text-based web browser as well as a pager like 'more' or
'less'.  With w3m you can browse web pages through a terminal emulator
window.  Moreover, w3m can be used as a text formatting tool which
typesets HTML into plain text.")
    (license (x11-style "file://doc/README"
                        "See 'doc/README' in the distribution."))))

license: mit


code:
;;; GNU Guix --- Functional package management for GNU
;;; Copyright © 2013 Nikita Karetnikov <nikita@karetnikov.org>
;;; Copyright © 2017 Eric Bavier <bavier@member.fsf.org>
;;;
;;; 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 wdiff)
  #:use-module (guix licenses)
  #:use-module (guix packages)
  #:use-module (guix download)
  #:use-module (guix build-system gnu)
  #:use-module (gnu packages texinfo)
  #:use-module (gnu packages screen)
  #:use-module (gnu packages base))

(define-public wdiff
  (package
    (name "wdiff")
    (version "1.2.2")
    (source
     (origin
      (method url-fetch)
      (uri (string-append "mirror://gnu/wdiff/wdiff-"
                          version ".tar.gz"))
      (sha256
       (base32
        "0sxgg0ms5lhi4aqqvz1rj4s77yi9wymfm3l3gbjfd1qchy66kzrl"))))
    (build-system gnu-build-system)
    (arguments
     `(#:phases (modify-phases %standard-phases
                  (add-before 'check 'fix-sh
                    (lambda _
                      (substitute* "tests/testsuite"
                        (("#! /bin/sh")
                         (string-append "#!" (which "sh")))))))))
    (native-inputs
     `(("which" ,which)
       ;; For some reason wdiff.info gets rebuilt.
       ("texinfo" ,texinfo)))
    (home-page "https://www.gnu.org/software/wdiff/")
    (synopsis "Word difference finder")
    (description
     "GNU Wdiff is a front-end to the diff program from Diffutils that
allows you to compare files on a word-by-word basis, where a word is anything
between whitespace.")
    (license gpl3+)))


code:
;;; GNU Guix --- Functional package management for GNU
;;; Copyright © 2014 John Darrington <jmd@gnu.org>
;;; Copyright © 2014 Mark H Weaver <mhw@netris.org>
;;; Copyright © 2015, 2016 Efraim Flashner <efraim@flashner.co.il>
;;; Copyright © 2016 Kei Kebreau <kkebreau@posteo.net>
;;; Copyright © 2017 Eric Bavier <bavier@member.fsf.org>
;;; Copyright © 2018 Tobias Geerinckx-Rice <me@tobias.gr>
;;; Copyright © 2018 Rutger Helling <rhelling@mykolab.com>
;;;
;;; 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 web-browsers)
  #:use-module ((guix licenses) #:prefix license:)
  #:use-module (guix packages)
  #:use-module (gnu packages)
  #:use-module (gnu packages compression)
  #:use-module (gnu packages databases)
  #:use-module (gnu packages documentation)
  #:use-module (gnu packages fltk)
  #:use-module (gnu packages fontutils)
  #:use-module (gnu packages gtk)
  #:use-module (gnu packages gnupg)
  #:use-module (gnu packages libevent)
  #:use-module (gnu packages libidn)
  #:use-module (gnu packages lua)
  #:use-module (gnu packages gnome)
  #:use-module (gnu packages ncurses)
  #:use-module (gnu packages perl)
  #:use-module (gnu packages pkg-config)
  #:use-module (gnu packages python)
  #:use-module (gnu packages python-web)
  #:use-module (gnu packages qt)
  #:use-module (gnu packages image)
  #:use-module (gnu packages tls)
  #:use-module (gnu packages webkit)
  #:use-module (gnu packages xorg)
  #:use-module (guix download)
  #:use-module (guix build-system gnu)
  #:use-module (guix build-system glib-or-gtk)
  #:use-module (guix build-system python))

(define-public dillo
  (package
    (name "dillo")
    (version "3.0.5")
    (source (origin
              (method url-fetch)
              (uri (string-append "http://www.dillo.org/download/"
                                  name "-" version ".tar.bz2"))
              (sha256
               (base32
                "12ql8n1lypv3k5zqgwjxlw1md90ixz3ag6j1gghfnhjq3inf26yv"))))
    (build-system gnu-build-system)
    (arguments `(#:configure-flags '("--enable-ssl" "--enable-ipv6")))
    (native-inputs `(("pkg-config" ,pkg-config)))
    (inputs `(("fltk" ,fltk)
              ("fontconfig" ,fontconfig)
              ("libjpeg" ,libjpeg)
              ("libpng" ,libpng)
              ("libxcursor" ,libxcursor)
              ("libxft" ,libxft)
              ("libxi" ,libxi)
              ("libxinerama" ,libxinerama)
              ("openssl" ,openssl)
              ("perl" ,perl)
              ("zlib" ,zlib)))
    (synopsis "Very small and fast graphical web browser")
    (description "Dillo is a minimalistic web browser particularly intended for
older or slower computers and embedded systems.")
    (home-page "http://www.dillo.org")
    (license license:gpl3+)))

(define-public links
  (package
    (name "links")
    (version "2.17")
    (source (origin
              (method url-fetch)
              (uri (string-append "http://links.twibright.com/download/"
                                  name "-" version ".tar.bz2"))
                (sha256
               (base32
                "0dh2gbzcw8kxy81z4ggsynibnqs56b83vy8qgz7illsag1irff6q"))))
    (build-system gnu-build-system)
    (arguments
     `(#:phases
       (modify-phases %standard-phases
         (replace 'configure
           (lambda* (#:key outputs #:allow-other-keys)
             ;; The tarball uses a very old version of autconf. It doesn't
             ;; understand extra flags like `--enable-fast-install', so
             ;; we need to invoke it with just what it understands.
             (let ((out (assoc-ref outputs "out")))
               ;; 'configure' doesn't understand '--host'.
               ,@(if (%current-target-system)
                     `((setenv "CHOST" ,(%current-target-system)))
                     '())
               (setenv "CONFIG_SHELL" (which "bash"))
               (invoke "./configure"
                       (string-append "--prefix=" out)
                       "--enable-graphics")
               #t))))))
    (native-inputs `(("pkg-config" ,pkg-config)))
    (inputs `(("zlib" ,zlib)
              ("openssl" ,openssl)
              ("libjpeg" ,libjpeg)
              ("libtiff" ,libtiff)
              ("libevent" ,libevent)
              ("libpng" ,libpng)
              ("libxt" ,libxt)))
    (synopsis "Text and graphics mode web browser")
    (description "Links is a graphics and text mode web browser, with many
features including, tables, builtin image display, bookmarks, SSL and more.")
    (home-page "http://links.twibright.com")
    ;; The distribution contains a copy of GPLv2
    ;; However, the copyright notices simply say:
    ;; "This file is a part of the Links program, released under GPL."
    ;; Therefore, under the provisions of Section 9, we can choose
    ;; any version ever published by the FSF.
    ;; One file (https.c) contains an exception permitting
    ;; linking of the program with openssl.
    (license license:gpl1+)))

(define-public luakit
  (package
    (name "luakit")
    (version "2017.08.10")
    (source (origin
              (method url-fetch)
              (uri (string-append "https://github.com/luakit/luakit/archive/" version
                                  ".tar.gz"))
              (sha256
               (base32
                "0dwxhnq90whakgdg21lzcf03n2g1c7hqgliwhav8av5na5mqpn93"))
              (file-name (string-append name "-" version ".tar.gz"))))
    (inputs
     `(("lua-5.1", lua-5.1)
       ("gtk+" ,gtk+)
       ("gsettings-desktop-schemas", gsettings-desktop-schemas)
       ("glib-networking", glib-networking)
       ("lua5.1-filesystem", lua5.1-filesystem)
       ("luajit", luajit)
       ("webkitgtk", webkitgtk)
       ("sqlite", sqlite)))
    (native-inputs
     `(("pkg-config", pkg-config)))
    (build-system glib-or-gtk-build-system)
    (arguments
     '(#:make-flags
       (let ((out (assoc-ref %outputs "out")))
         (list
          "CC=gcc"
          "LUA_BIN_NAME=lua"
          "DEVELOPMENT_PATHS=0"
          (string-append "PREFIX=" out)
          (string-append "XDGPREFIX=" out "/etc/xdg")))
       #:phases
       (modify-phases %standard-phases
         (add-before 'build 'lfs-workaround
           (lambda _
             (setenv "LUA_CPATH"
                     (string-append
                      (assoc-ref %build-inputs "lua5.1-filesystem")
                      "/lib/lua/5.1/?.so;;"))
             #t))
         (delete 'configure)
         (delete 'check)
         (add-after 'install 'wrap
           (lambda* (#:key inputs outputs #:allow-other-keys)
             (let* ((luakit (assoc-ref outputs "out"))
                    (lua5.1-filesystem (assoc-ref inputs "lua5.1-filesystem") )
                    (gtk (assoc-ref inputs "gtk+"))
                    (gtk-share (string-append gtk "/share")))
               (wrap-program (string-append luakit "/bin/luakit")
                 `("LUA_CPATH" prefix
                   (,(string-append lua5.1-filesystem
                                    "/lib/lua/5.1/?.so;;")))
                 `("XDG_CONFIG_DIRS" prefix
                   (,(string-append luakit "/etc/xdg/"))))
               #t))))))
    (synopsis "Fast, lightweight, and simple browser based on WebKit")
    (description "Luakit is a fast, lightweight, and simple to use
micro-browser framework extensible by Lua using the WebKit web content engine
and the GTK+ toolkit.")
    (home-page "https://luakit.github.io/")
    (license license:gpl3+)))

(define-public lynx
  (package
    (name "lynx")
    (version "2.8.9rel.1")
    (source (origin
              (method url-fetch)
              (uri (string-append
                    "http://invisible-mirror.net/archives/lynx/tarballs"
                    "/lynx" version ".tar.bz2"))
              (sha256
               (base32
                "15cmyyma2kz1hfaa6mwjgli8zwdzq3jv0q2cl6nwzycjfwyijzrq"))))
    (build-system gnu-build-system)
    (native-inputs `(("pkg-config" ,pkg-config)
                     ("perl" ,perl)))
    (inputs `(("ncurses" ,ncurses)
              ("libidn" ,libidn)
              ("gnutls" ,gnutls)
              ("libgcrypt" ,libgcrypt)
              ("unzip" ,unzip)
              ("zlib" ,zlib)
              ("gzip" ,gzip)
              ("bzip2" ,bzip2)))
    (arguments
     `(#:configure-flags
       (let ((gnutls (assoc-ref %build-inputs "gnutls")))
         `("--with-pkg-config"
           "--with-screen=ncurses"
           "--with-zlib"
           "--with-bzlib"
           ,(string-append "--with-gnutls=" gnutls)
           ;; "--with-socks5"    ; XXX TODO
           "--enable-widec"
           "--enable-ascii-ctypes"
           "--enable-local-docs"
           "--enable-htmlized-cfg"
           "--enable-gzip-help"
           "--enable-nls"
           "--enable-ipv6"))
       #:tests? #f  ; no check target
       #:phases
       (modify-phases %standard-phases
         (add-before 'configure 'set-makefile-shell
           (lambda _ (substitute* "po/makefile.inn"
                       (("/bin/sh") (which "sh")))
                     #t))
         (replace 'install
           (lambda* (#:key (make-flags '()) #:allow-other-keys)
             (apply invoke "make" "install-full" make-flags)
             #t)))))
    (synopsis "Text Web Browser")
    (description
     "Lynx is a fully-featured World Wide Web (WWW) client for users running
cursor-addressable, character-cell display devices.  It will display Hypertext
Markup Language (HTML) documents containing links to files on the local
system, as well as files on remote systems running http, gopher, ftp, wais,
nntp, finger, or cso/ph/qi servers.  Lynx can be used to access information on
the WWW, or to build information systems intended primarily for local
access.")
    (home-page "https://lynx.invisible-island.net/")
    (license license:gpl2)))

(define-public qutebrowser
  (package
    (name "qutebrowser")
    (version "0.11.0")
    (source
     (origin
       (method url-fetch)
       (uri (string-append "https://github.com/The-Compiler/"
                           "qutebrowser/releases/download/v" version "/"
                           "qutebrowser-" version ".tar.gz"))
       (sha256
        (base32
         "13ihx66jm1dd6vx8px7pm0kbzf2sf9x43hhivc1rp17kahnxxdyv"))))
    (build-system python-build-system)
    (native-inputs
     `(("asciidoc" ,asciidoc)))
    (inputs
     `(("python-colorama" ,python-colorama)
       ("python-cssutils" ,python-cssutils)
       ("python-jinja2" ,python-jinja2)
       ("python-markupsafe" ,python-markupsafe)
       ("python-pygments" ,python-pygments)
       ("python-pypeg2" ,python-pypeg2)
       ("python-pyyaml" ,python-pyyaml)
       ("python-pyqt" ,python-pyqt)
       ("qtwebkit" ,qtwebkit)))
    (arguments
     `(#:tests? #f                      ;no tests
       #:phases
       (modify-phases %standard-phases
         (add-after 'install 'install-more
           (lambda* (#:key outputs #:allow-other-keys)
             (let* ((out (assoc-ref outputs "out"))
                    (app (string-append out "/share/applications"))
                    (hicolor (string-append out "/share/icons/hicolor")))
               (invoke "a2x" "-f" "manpage" "doc/qutebrowser.1.asciidoc")
               (install-file "doc/qutebrowser.1"
                             (string-append out "/share/man/man1"))

               (for-each
                (lambda (i)
                  (let ((src  (format #f "icons/qutebrowser-~dx~d.png" i i))
                        (dest (format #f "~a/~dx~d/apps/qutebrowser.png"
                                      hicolor i i)))
                    (mkdir-p (dirname dest))
                    (copy-file src dest)))
                '(16 24 32 48 64 128 256 512))
               (install-file "icons/qutebrowser.svg"
                             (string-append hicolor "/scalable/apps"))

               (substitute* "qutebrowser.desktop"
                 (("Exec=qutebrowser")
                  (string-append "Exec=" out "/bin/qutebrowser")))
               (install-file "qutebrowser.desktop" app)
               #t))))))
    (home-page "https://qutebrowser.org/")
    (synopsis "Minimal, keyboard-focused, vim-like web browser")
    (description "qutebrowser is a keyboard-focused browser with a minimal
GUI.  It is based on PyQt5 and QtWebKit.")
    (license license:gpl3+)))