guix/gnu/packages/glib.scm

;;; GNU Guix --- Functional package management for GNU
;;; Copyright © 2013, 2014, 2015, 2016, 2019, 2020 Ludovic Courtès <ludo@gnu.org>
;;; Copyright © 2013, 2015 Andreas Enge <andreas@enge.fr>
;;; Copyright © 2013 Nikita Karetnikov <nikita@karetnikov.org>
;;; Copyright © 2014, 2015, 2016, 2017, 2018, 2021 Mark H Weaver <mhw@netris.org>
;;; Copyright © 2016, 2020 Efraim Flashner <efraim@flashner.co.il>
;;; Copyright © 2016 Lukas Gradl <lgradl@openmailbox.org>
;;; Copyright © 2017, 2018, 2019 Ricardo Wurmus <rekado@elephly.net>
;;; Copyright © 2017 Petter <petter@mykolab.ch>
;;; Copyright © 2018, 2019 Tobias Geerinckx-Rice <me@tobias.gr>
;;; Copyright © 2018 Alex Vong <alexvong1995@gmail.com>
;;; Copyright © 2019, 2021 Maxim Cournoyer <maxim.cournoyer@gmail.com>
;;; Copyright © 2019 Giacomo Leidi <goodoldpaul@autistici.org>
;;; Copyright © 2019, 2020 Marius Bakke <mbakke@fastmail.com>
;;; Copyright © 2020 Nicolò Balzarotti <nicolo@nixo.xyz>
;;; Copyright © 2020 Arthur Margerit <ruhtra.mar@gmail.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 glib)
  #:use-module (gnu packages)
  #:use-module (gnu packages backup)
  #:use-module (gnu packages base)
  #:use-module (gnu packages bison)
  #:use-module (gnu packages check)
  #:use-module (gnu packages compression)
  #:use-module (gnu packages docbook)
  #:use-module (gnu packages documentation)
  #:use-module (gnu packages enlightenment)
  #:use-module (gnu packages file)
  #:use-module (gnu packages flex)
  #:use-module (gnu packages gettext)
  #:use-module (gnu packages gnome)
  #:use-module (gnu packages gperf)
  #:use-module (gnu packages gtk)
  #:use-module (gnu packages libffi)
  #:use-module (gnu packages linux)
  #:use-module (gnu packages m4)
  #:use-module (gnu packages nettle)
  #:use-module (gnu packages pcre)
  #:use-module (gnu packages package-management)
  #:use-module (gnu packages perl)
  #:use-module (gnu packages perl-check)
  #:use-module (gnu packages popt)
  #:use-module (gnu packages pkg-config)
  #:use-module (gnu packages python)
  #:use-module (gnu packages python-xyz)
  #:use-module (gnu packages selinux)
  #:use-module (gnu packages web)
  #:use-module (gnu packages xml)
  #:use-module (gnu packages xorg)
  #:use-module (guix build-system gnu)
  #:use-module (guix build-system cmake)
  #:use-module (guix build-system meson)
  #:use-module (guix build-system perl)
  #:use-module (guix build-system python)
  #:use-module (guix download)
  #:use-module ((guix licenses) #:prefix license:)
  #:use-module (guix packages)
  #:use-module (guix utils)
  #:use-module ((srfi srfi-1) #:hide (zip))

  ;; Export variables up-front to allow circular dependency with the 'xorg'
  ;; module.
  #:export (dbus
            glib
            gobject-introspection
            dbus-glib
            intltool
            itstool
            libsigc++
            glibmm
            telepathy-glib
            perl-net-dbus
            perl-net-dbus-glib))

(define dbus
  (package
    (name "dbus")
    (version "1.12.16")
    (source (origin
              (method url-fetch)
              (uri (string-append
                    "https://dbus.freedesktop.org/releases/dbus/dbus-"
                    version ".tar.gz"))
              (sha256
               (base32
                "107ckxaff1cv4q6kmfdi2fb1nlsv03312a7kf6lb4biglhpjv8jl"))
              (patches (search-patches "dbus-CVE-2020-12049.patch"
                                       "dbus-helper-search-path.patch"))))
    (build-system gnu-build-system)
    (arguments
     '(#:configure-flags
       (list
        ;; Install the system bus socket under /var.
        "--localstatedir=/var"

        ;; Install the session bus socket under /tmp.
        "--with-session-socket-dir=/tmp"

        ;; Build shared libraries only.
        "--disable-static"

        ;; Use /etc/dbus-1 for system-wide config.
        ;; Look for configuration file under
        ;; /etc/dbus-1.  This is notably required by
        ;; 'dbus-daemon-launch-helper', which looks for
        ;; the 'system.conf' file in that place,
        ;; regardless of what '--config-file' was
        ;; passed to 'dbus-daemon' on the command line;
        ;; see <https://bugs.freedesktop.org/show_bug.cgi?id=92458>.
        "--sysconfdir=/etc")
       #:phases
       (modify-phases %standard-phases
         (replace 'install
                  (lambda _
                    ;; Don't try to create /var and /etc.
                    (invoke "make"
                            "localstatedir=/tmp/dummy"
                            "sysconfdir=/tmp/dummy"
                            "install"))))))
    (native-inputs
     `(("pkg-config" ,pkg-config)
       ;; Dependencies to generate the doc.
       ("docbook-xml" ,docbook-xml-4.4)
       ("docbook-xsl" ,docbook-xsl)
       ("doxygen" ,doxygen)
       ("xmlto" ,xmlto)
       ("libxml2" ,libxml2)             ;for XML_CATALOG_FILES
       ("libxslt" ,libxslt)
       ("yelp-tools" ,yelp-tools)))
    (inputs
     `(("expat" ,expat)
       ;; Add a dependency on libx11 so that 'dbus-launch' has support for
       ;; '--autolaunch'.
       ("libx11" ,libx11)))
    (outputs '("out" "doc"))            ;22 MiB of HTML doc
    (home-page "https://www.freedesktop.org/wiki/Software/dbus/")
    (synopsis "Message bus for inter-process communication (IPC)")
    (description
     "D-Bus is a message bus system, a simple way for applications to
talk to one another.  In addition to interprocess communication, D-Bus
helps coordinate process lifecycle; it makes it simple and reliable to
code a \"single instance\" application or daemon, and to launch
applications and daemons on demand when their services are needed.

D-Bus supplies both a system daemon (for events such as \"new hardware
device added\" or \"printer queue changed\") and a
per-user-login-session daemon (for general IPC needs among user
applications).  Also, the message bus is built on top of a general
one-to-one message passing framework, which can be used by any two apps
to communicate directly (without going through the message bus
daemon).  Currently the communicating applications are on one computer,
or through unencrypted TCP/IP suitable for use behind a firewall with
shared NFS home directories.")
    (license license:gpl2+)))                     ; or Academic Free License 2.1

(define glib
  (package
   (name "glib")
   (version "2.62.6")
   (replacement glib/fixed)
   (source (origin
            (method url-fetch)
            (uri (string-append "mirror://gnome/sources/"
                                name "/" (string-take version 4) "/"
                                name "-" version ".tar.xz"))
            (sha256
             (base32
              "174bsmbmcvaw69ff9g60q5sx0fn23rkhqcwqz17h5s7sprps4kqh"))
            (patches (search-patches "glib-appinfo-watch.patch"
                                     "glib-tests-timer.patch"))
            (modules '((guix build utils)))
            (snippet
             '(begin
                (substitute* "tests/spawn-test.c"
                  (("/bin/sh") "sh"))
                #t))))
   (build-system meson-build-system)
   (outputs '("out"           ; everything
              "bin"))         ; glib-mkenums, gtester, etc.; depends on Python
   (propagated-inputs
    `(("pcre" ,pcre)  ; in the Requires.private field of glib-2.0.pc
      ("libffi" ,libffi) ; in the Requires.private field of gobject-2.0.pc
      ;; These are in the Requires.private field of gio-2.0.pc
      ("util-linux" ,util-linux "lib")  ;for libmount
      ("libselinux" ,libselinux)
      ("zlib" ,zlib)))
   (native-inputs
    `(("gettext" ,gettext-minimal)
      ("m4" ,m4) ; for installing m4 macros
      ("dbus" ,dbus)                              ; for GDBus tests
      ("pkg-config" ,pkg-config)
      ("python" ,python-wrapper)
      ("perl" ,perl)                              ; needed by GIO tests
      ("tzdata" ,tzdata-for-tests)))                  ; for tests/gdatetime.c
   (arguments
    `(#:disallowed-references (,tzdata-for-tests)
      #:phases
      (modify-phases %standard-phases
        (add-after 'unpack 'patch-dbus-launch-path
          (lambda* (#:key inputs #:allow-other-keys)
            (let ((dbus (assoc-ref inputs "dbus")))
              (substitute* "gio/gdbusaddress.c"
                (("command_line = g_strdup_printf \\(\"dbus-launch")
                 (string-append "command_line = g_strdup_printf (\""
                                dbus "/bin/dbus-launch")))
              #t)))
        (add-after 'unpack 'patch-gio-launch-desktop
          (lambda* (#:key outputs #:allow-other-keys)
            (let ((out (assoc-ref outputs "out")))
              ;; See also <https://gitlab.gnome.org/GNOME/glib/issues/1633>
              ;; for another future fix.
              (substitute* "gio/gdesktopappinfo.c"
               (("gio-launch-desktop")
                (string-append out "/libexec/gio-launch-desktop")))
              #t)))
        ;; TODO: Remove the conditional in the next core-updates cycle.
        ;; Needed to build glib on slower ARM nodes.
        ,@(if (string-prefix? "arm" (%current-system))
              `((add-after 'unpack 'increase-test-timeout
                  (lambda _
                    (substitute* "meson.build"
                      (("test_timeout = 60")
                       "test_timeout = 120")
                      (("test_timeout_slow = 120")
                       "test_timeout_slow = 180")))))
              '())
        (add-before 'build 'pre-build
          (lambda* (#:key inputs outputs #:allow-other-keys)
            ;; For tests/gdatetime.c.
            (setenv "TZDIR"
                    (string-append (assoc-ref inputs "tzdata")
                                   "/share/zoneinfo"))

            ;; Some tests want write access there.
            (setenv "HOME" (getcwd))
            (setenv "XDG_CACHE_HOME" (getcwd))
            #t))
        (add-after 'unpack 'disable-failing-tests
          (lambda _
            (let ((disable
                   (lambda (test-file test-paths)
                     (define pattern+procs
                       (map (lambda (test-path)
                              (cons
                               ;; XXX: only works for single line statements.
                               (format #f "g_test_add_func.*\"~a\".*" test-path)
                               (const "")))
                            test-paths))
                     (substitute test-file pattern+procs)))
                  (failing-tests
                   '(("glib/tests/thread.c"
                      (;; prlimit(2) returns ENOSYS on Linux 2.6.32-5-xen-amd64
                       ;; as found on hydra.gnu.org, and strace(1) doesn't
                       ;; recognize it.
                       "/thread/thread4"))

                     ;; This tries to find programs in FHS directories.
                     ("glib/tests/utils.c"
                      ("/utils/find-program"))

                     ;; This fails because "glib/tests/echo-script" cannot be
                     ;; found.
                     ("glib/tests/spawn-singlethread.c"
                      ("/gthread/spawn-script"))

                     ("glib/tests/timer.c"
                      (;; fails if compiler optimizations are enabled, which they
                       ;; are by default.
                       "/timer/stop"))

                     ("gio/tests/gapplication.c"
                      (;; XXX: proven to be unreliable.  See:
                       ;;  <https://bugs.debian.org/756273>
                       ;;  <http://bugs.gnu.org/18445>
                       "/gapplication/quit"

                       ;; XXX: fails randomly for unknown reason. See:
                       ;;  <https://lists.gnu.org/archive/html/guix-devel/2016-04/msg00215.html>
                       "/gapplication/local-actions"))

                     ("gio/tests/contenttype.c"
                      (;; XXX: requires shared-mime-info.
                       "/contenttype/guess"
                       "/contenttype/guess_svg_from_data"
                       "/contenttype/subtype"
                       "/contenttype/list"
                       "/contenttype/icon"
                       "/contenttype/symbolic-icon"
                       "/contenttype/tree"))

                     ("gio/tests/appinfo.c"
                      (;; XXX: requires update-desktop-database.
                       "/appinfo/associations"))

                     ("gio/tests/desktop-app-info.c"
                      (;; XXX: requires update-desktop-database.
                       "/desktop-app-info/delete"
                       "/desktop-app-info/default"
                       "/desktop-app-info/fallback"
                       "/desktop-app-info/lastused"
                       "/desktop-app-info/search"))

                     ("gio/tests/gdbus-peer.c"
                      (;; Requires /etc/machine-id.
                       "/gdbus/codegen-peer-to-peer"))

                     ("gio/tests/gdbus-address-get-session.c"
                      (;; Requires /etc/machine-id.
                       "/gdbus/x11-autolaunch"))

                     ("gio/tests/gsocketclient-slow.c"
                      (;; These tests tries to resolve "localhost", and fails.
                       "/socket-client/happy-eyeballs/slow"
                       "/socket-client/happy-eyeballs/cancellation/delayed"))

                     )))
              (for-each (lambda (x) (apply disable x)) failing-tests)
              #t)))
        (replace 'check
          (lambda _
            (setenv "MESON_TESTTHREADS"
                    (number->string (parallel-job-count)))
            ;; Do not run tests marked as "flaky".
            (invoke "meson" "test" "--no-suite" "flaky")))
        ;; TODO: meson does not permit the bindir to be outside of prefix.
        ;; See https://github.com/mesonbuild/meson/issues/2561
        ;; We can remove this once meson is patched.
        (add-after 'install 'move-executables
          (lambda* (#:key outputs #:allow-other-keys)
            (let ((out (assoc-ref outputs "out"))
                  (bin (assoc-ref outputs "bin")))
              (mkdir-p bin)
              (rename-file (string-append out "/bin")
                           (string-append bin "/bin"))
              ;; This one is an implementation detail of glib.
              ;; It is wrong that that's in "/bin" in the first place,
              ;; but that's what upstream is doing right now.
              ;; See <https://gitlab.gnome.org/GNOME/glib/issues/1633>.
              (mkdir (string-append out "/libexec"))
              (rename-file (string-append bin "/bin/gio-launch-desktop")
                           (string-append out "/libexec/gio-launch-desktop"))
              ;; Do not refer to "bindir", which points to "${prefix}/bin".
              ;; We don't patch "bindir" to point to "$bin/bin", because that
              ;; would create a reference cycle between the "out" and "bin"
              ;; outputs.
              (substitute* (list (string-append out "/lib/pkgconfig/gio-2.0.pc")
                                 (string-append out "/lib/pkgconfig/glib-2.0.pc"))
                (("bindir=\\$\\{prefix\\}/bin") "")
                (("=\\$\\{bindir\\}/") "="))
              #t))))))
      ;; TODO: see above for explanation.
      ;; #:configure-flags (list (string-append "--bindir="
      ;;                                        (assoc-ref %outputs "bin")
      ;;                                        "/bin"))

   (native-search-paths
    ;; This variable is not really "owned" by GLib, but several related
    ;; packages refer to it: gobject-introspection's tools use it as a search
    ;; path for .gir files, and it's also a search path for schemas produced
    ;; by 'glib-compile-schemas'.
    (list (search-path-specification
           (variable "XDG_DATA_DIRS")
           (files '("share")))
          ;; To load extra gio modules from glib-networking, etc.
          (search-path-specification
           (variable "GIO_EXTRA_MODULES")
           (files '("lib/gio/modules")))))
   (search-paths native-search-paths)
   (properties '((hidden? . #t)))

   (synopsis "Thread-safe general utility library; basis of GTK+ and GNOME")
   (description
    "GLib provides data structure handling for C, portability wrappers,
and interfaces for such runtime functionality as an event loop, threads,
dynamic loading, and an object system.")
   (home-page "https://developer.gnome.org/glib/")
   (license license:lgpl2.1+)))

(define glib/fixed
  (package
    (inherit glib)
    (source (origin
              (inherit (package-source glib))
              (patches
               (append (search-patches "glib-CVE-2021-27218.patch"
                                       "glib-CVE-2021-27219-01.patch"
                                       "glib-CVE-2021-27219-02.patch"
                                       "glib-CVE-2021-27219-03.patch"
                                       "glib-CVE-2021-27219-04.patch"
                                       "glib-CVE-2021-27219-05.patch"
                                       "glib-CVE-2021-27219-06.patch"
                                       "glib-CVE-2021-27219-07.patch"
                                       "glib-CVE-2021-27219-08.patch"
                                       "glib-CVE-2021-27219-09.patch"
                                       "glib-CVE-2021-27219-10.patch"
                                       "glib-CVE-2021-27219-11.patch"
                                       "glib-CVE-2021-27219-12.patch"
                                       "glib-CVE-2021-27219-13.patch"
                                       "glib-CVE-2021-27219-14.patch"
                                       "glib-CVE-2021-27219-15.patch"
                                       "glib-CVE-2021-27219-16.patch"
                                       "glib-CVE-2021-27219-17.patch"
                                       "glib-CVE-2021-27219-18.patch"
                                       "glib-CVE-2021-28153.patch")
                       (origin-patches (package-source glib))))))))

(define-public glib-with-documentation
  ;; glib's doc must be built in a separate package since it requires gtk-doc,
  ;; which in turn depends on glib.
  (package/inherit glib
    (properties (alist-delete 'hidden? (package-properties glib)))
    (outputs (cons "doc" (package-outputs glib))) ; 20 MiB of GTK-Doc reference
    (native-inputs
     `(("gtk-doc" ,gtk-doc)             ; for the doc
       ("docbook-xml" ,docbook-xml)
       ("libxml2" ,libxml2)
       ,@(package-native-inputs glib)))
    (arguments
     (substitute-keyword-arguments (package-arguments glib)
       ((#:configure-flags flags ''())
        `(cons "-Dgtk_doc=true" ,flags))
       ((#:phases phases)
        `(modify-phases ,phases
           (add-after 'install 'move-doc
             (lambda* (#:key outputs #:allow-other-keys)
               (let ((out (assoc-ref outputs "out"))
                     (doc (assoc-ref outputs "doc"))
                     (html (string-append "/share/gtk-doc")))
                 (copy-recursively (string-append out html)
                                   (string-append doc html))
                 (delete-file-recursively (string-append out html))
                 #t)))))))))

;;; TODO: Merge into glib as a 'static' output on core-updates.
(define-public glib-static
  (hidden-package
   (package
     (inherit glib)
     (name "glib-static")
     (outputs '("out"))
     (arguments
      (substitute-keyword-arguments (package-arguments glib)
        ((#:configure-flags flags ''())
         `(cons* "--default-library=static"
                 "-Dselinux=disabled"
                 "-Dman=false"
                 "-Dgtk_doc=false"
                 "-Dinternal_pcre=false"
                 ,flags))
        ((#:phases phases)
         `(modify-phases ,phases
            (delete 'move-executables)
            (replace 'install
              ;; Only install the static libraries.
              (lambda* (#:key outputs #:allow-other-keys)
                (let* ((out (assoc-ref outputs "out"))
                       (lib (string-append out "/lib")))
                  (for-each (lambda (f)
                              (install-file f lib))
                            (find-files "." "\\.a$"))))))))))))

(define gobject-introspection
  (package
    (name "gobject-introspection")
    (version "1.62.0")
    (source
     (origin
       (method url-fetch)
       (uri
        (string-append "mirror://gnome/sources/"
                       "gobject-introspection/" (version-major+minor version)
                       "/gobject-introspection-" version ".tar.xz"))
       (sha256
        (base32 "18lhglg9v6y83lhqzyifc1z0wrlawzrhzzxx0a3h1g7xaz97xvmi"))
       (patches
        (search-patches
         "gobject-introspection-cc.patch"
         "gobject-introspection-girepository.patch"
         "gobject-introspection-absolute-shlib-path.patch"))))
    (build-system meson-build-system)
    (arguments
     `(#:phases
       (modify-phases %standard-phases
         (add-after 'unpack 'do-not-use-/usr/bin/env
           (lambda _
             (substitute* "tools/g-ir-tool-template.in"
               (("#!@PYTHON_CMD@")
                (string-append "#!" (which "python3"))))
             #t)))))
    (native-inputs
     `(("glib" ,glib "bin")
       ("pkg-config" ,pkg-config)))
    (inputs
     `(("bison" ,bison)
       ("flex" ,flex)
       ("glib" ,glib)
       ("python" ,python-wrapper)
       ("zlib" ,zlib)))
    (propagated-inputs
     `(;; In practice, GIR users will need libffi when using
       ;; gobject-introspection.
       ("libffi" ,libffi)))
    (native-search-paths
     (list
      (search-path-specification
       (variable "GI_TYPELIB_PATH")
       (files '("lib/girepository-1.0")))))
    (search-paths native-search-paths)
    (synopsis "GObject introspection tools and libraries")
    (description "GObject introspection is a middleware layer between
C libraries (using GObject) and language bindings.  The C library can be scanned
at compile time and generate metadata files, in addition to the actual native
C library.  Then language bindings can read this metadata and automatically
provide bindings to call into the C library.")
    (home-page "https://wiki.gnome.org/Projects/GObjectIntrospection")
    (license
     (list
      ;; For library.
      license:lgpl2.0+
      ;; For tools.
      license:gpl2+))))

(define intltool
  (package
    (name "intltool")
    (version "0.51.0")
    (source (origin
             (method url-fetch)
             (uri (string-append "https://launchpad.net/intltool/trunk/"
                                 version "/+download/intltool-"
                                 version ".tar.gz"))
             (patches (search-patches "intltool-perl-compatibility.patch"))
             (sha256
              (base32
               "1karx4sb7bnm2j67q0q74hspkfn6lqprpy5r99vkn5bb36a4viv7"))))
    (build-system gnu-build-system)
    (inputs
     `(("file" ,file)))
    (propagated-inputs
     `(;; Propagate gettext because users expect it to be there, and so does
       ;; the `intltool-update' script.
       ("gettext" ,gettext-minimal)

       ("perl-xml-parser" ,perl-xml-parser)
       ("perl" ,perl)))
    (arguments
     `(#:phases
       (modify-phases %standard-phases
         (add-after 'unpack 'patch-file-references
           (lambda* (#:key inputs #:allow-other-keys)
             (let ((file (assoc-ref inputs "file")))
               (substitute* "intltool-update.in"
                 (("`file") (string-append "`" file "/bin/file")))
               #t))))))
    (home-page "https://launchpad.net/intltool/+download")
    (synopsis "Tools to centralise translations of different file formats")
    (description
     "Intltool is a set of tools to centralise translations of many different
file formats using GNU gettext-compatible PO files.

The intltool collection can be used to do these things:

    Extract translatable strings from various source files (.xml.in,
    glade, .desktop.in, .server.in, .oaf.in).

    Collect the extracted strings together with messages from traditional
    source files (.c, .h) in po/$(PACKAGE).pot.

    Merge back the translations from .po files into .xml, .desktop and
    oaf files.  This merge step will happen at build resp. installation time.")
    (license license:gpl2+)))

(define itstool
  (package
    (name "itstool")
    (version "2.0.6")
    (source (origin
             (method url-fetch)
             (uri (string-append "http://files.itstool.org/itstool/itstool-"
                                 version ".tar.bz2"))
             (sha256
              (base32
               "1acjgf8zlyk7qckdk19iqaca4jcmywd7vxjbcs1mm6kaf8icqcv2"))))
    (build-system gnu-build-system)
    (inputs
     `(("libxml2" ,libxml2)
       ("python-libxml2" ,python-libxml2)
       ("python" ,python)))
    (arguments
     '(#:phases
       (modify-phases %standard-phases
         (add-after 'install 'wrap-program
           (lambda* (#:key outputs #:allow-other-keys)
             (let ((prog (string-append (assoc-ref outputs "out")
                                        "/bin/itstool")))
               (wrap-program prog
                 `("PYTHONPATH" = (,(getenv "PYTHONPATH"))))
               #t))))))
    (home-page "http://www.itstool.org")
    (synopsis "Tool to translate XML documents with PO files")
    (description
     "ITS Tool allows you to translate your XML documents with PO files, using
rules from the W3C Internationalization Tag Set (ITS) to determine what to
translate and how to separate it into PO file messages.

PO files are the standard translation format for GNU and other Unix-like
systems.  They present translatable information as discrete messages, allowing
each message to be translated independently.  In contrast to whole-page
translation, translating with a message-based format like PO means you can
easily track changes to the source document down to the paragraph.  When new
strings are added or existing strings are modified, you only need to update the
corresponding messages.

ITS Tool is designed to make XML documents translatable through PO files by
applying standard ITS rules, as well as extension rules specific to ITS Tool.
ITS also provides an industry standard way for authors to override translation
information in their documents, such as whether a particular element should be
translated.")
    (license license:gpl3+)))

(define dbus-glib
  (package
    (name "dbus-glib")
    (version "0.110")
    (source (origin
             (method url-fetch)
             (uri
              (string-append "https://dbus.freedesktop.org/releases/dbus-glib/dbus-glib-"
                             version ".tar.gz"))
             (sha256
              (base32
               "09g8swvc95bk1z6j8sw463p2v0dqmgm2zjfndf7i8sbcyq67dr3w"))))
    (build-system gnu-build-system)
    (propagated-inputs ; according to dbus-glib-1.pc
     `(("dbus" ,dbus)
       ("glib" ,glib)))
    (inputs
     `(("expat" ,expat)))
    (native-inputs
     `(("glib" ,glib "bin")
       ("pkg-config" ,pkg-config)))
    (home-page "https://dbus.freedesktop.org/doc/dbus-glib/")
    (synopsis "D-Bus GLib bindings")
    (description
     "GLib bindings for D-Bus.  The package is obsolete and superseded
by GDBus included in Glib.")
    (license license:gpl2)))                     ; or Academic Free License 2.1

(define libsigc++
  (package
    (name "libsigc++")
    (version "2.10.3")
    (source (origin
             (method url-fetch)
             (uri (string-append "mirror://gnome/sources/libsigc++/"
                                 (version-major+minor version) "/"
                                 name "-" version ".tar.xz"))
             (sha256
              (base32
               "11j7j1jv4z58d9s7jvl42fnqa1dzl4idgil9r45cjv1w673dys0b"))))
    (build-system gnu-build-system)
    (native-inputs `(("pkg-config" ,pkg-config)
                     ("m4" ,m4)))
    (home-page "https://libsigcplusplus.github.io/libsigcplusplus/")
    (synopsis "Type-safe callback system for standard C++")
    (description
     "Libsigc++ implements a type-safe callback system for standard C++.  It
allows you to define signals and to connect those signals to any callback
function, either global or a member function, regardless of whether it is
static or virtual.

It also contains adaptor classes for connection of dissimilar callbacks and
has an ease of use unmatched by other C++ callback libraries.")
    (license license:lgpl2.1+)))

(define glibmm
  (package
    (name "glibmm")
    (version "2.62.0")
    (source (origin
             (method url-fetch)
             (uri (string-append "mirror://gnome/sources/glibmm/"
                                 (version-major+minor version)
                                 "/glibmm-" version ".tar.xz"))
             (sha256
              (base32
               "1ziwx6r7k7wbvg4qq1rgrv8zninapgrmhn1hs6926a3krh9ryr9n"))))
    (build-system gnu-build-system)
    (arguments
     `(#:phases
       (modify-phases %standard-phases
         (add-before 'build 'pre-build
           (lambda _
             ;; This test uses /etc/fstab as an example file to read
             ;; from; choose a better example.
             (substitute* "tests/giomm_simple/main.cc"
               (("/etc/fstab")
                (string-append (getcwd)
                               "/tests/giomm_simple/main.cc")))

             ;; This test does a DNS lookup, and then expects to be able
             ;; to open a TLS session; just skip it.
             (substitute* "tests/giomm_tls_client/main.cc"
               (("Gio::init.*$")
                "return 77;\n"))
             #t)))))
    (native-inputs `(("pkg-config" ,pkg-config)
                     ("glib" ,glib "bin")))
    (propagated-inputs
     `(("libsigc++" ,libsigc++)
       ("glib" ,glib)))
    (home-page "https://gtkmm.org/")
    (synopsis "C++ interface to the GLib library")
    (description
     "Glibmm provides a C++ programming interface to the part of GLib that are
useful for C++.")
    (license license:lgpl2.1+)))

 (define-public glibmm-2.64
   (package
    (inherit glibmm)
    (name "glibmm")
    (version "2.64.2")
    (source
     (origin
       (method url-fetch)
       (uri
        (string-append "mirror://gnome/sources/glibmm/"
                       (version-major+minor version)
                       "/glibmm-" version ".tar.xz"))
       (sha256
        (base32 "1v6lp23fr2qh4zshcnm28sn29j3nzgsvcqj2nhmrnvamipjq4lm7"))))
     (propagated-inputs
      `(("libsigc++" ,libsigc++)
        ("glib" ,glib)))))

(define-public python2-pygobject-2
  (package
    (name "python2-pygobject")
    ;; This was the last version to declare the 2.0 platform number, i.e. its
    ;; pkg-config files were named pygobject-2.0.pc
    (version "2.28.7")
    (source
     (origin
       (method url-fetch)
       (uri (string-append "mirror://gnome/sources/pygobject/"
                           (version-major+minor version)
                           "/pygobject-" version ".tar.xz"))
       (sha256
        (base32
         "0nkam61rsn7y3wik3vw46wk5q2cjfh2iph57hl9m39rc8jijb7dv"))
       (patches (search-patches "python2-pygobject-2-deprecation.patch"))))
    (build-system gnu-build-system)
    (native-inputs
     `(("which" ,which)
       ("glib-bin" ,glib "bin")         ;for tests: glib-compile-schemas
       ("pkg-config" ,pkg-config)
       ("dbus" ,dbus)))                 ;for tests
    (inputs
     `(("python" ,python-2)
       ("glib"   ,glib)
       ("python2-pycairo" ,python2-pycairo)
       ("gobject-introspection" ,gobject-introspection)))
    (propagated-inputs
     `(("libffi" ,libffi)))             ;mentioned in pygobject-2.0.pc
    (arguments
     `(#:tests? #f                      ;segfaults during tests
       #:configure-flags '("LIBS=-lcairo-gobject")))
    (home-page "https://pypi.org/project/PyGObject/")
    (synopsis "Python bindings for GObject")
    (description
     "Python bindings for GLib, GObject, and GIO.")
    (license license:lgpl2.1+)))

(define-public python-pygobject
  (package
    (name "python-pygobject")
    (version "3.34.0")
    (source
     (origin
       (method url-fetch)
       (uri (string-append "mirror://gnome/sources/pygobject/"
                           (version-major+minor version)
                           "/pygobject-" version ".tar.xz"))
       (sha256
        (base32
         "06i7ynnbvgpz0gw09zsjbvhgcp5qz4yzdifw27qjwdazg2mckql7"))
       (modules '((guix build utils)))
       (snippet
        '(begin
           ;; We disable these tests in a snippet so that they are inherited
           ;; by the Python 2 variant which is built differently.
           (with-directory-excursion "tests"
             ;; FIXME: These tests require Gdk and/or Gtk 4.
             (for-each delete-file
                       '("test_atoms.py" "test_overrides_gtk.py"))
             #t)))))
    (build-system meson-build-system)
    (native-inputs
     `(("glib-bin" ,glib "bin")
       ("pkg-config" ,pkg-config)
       ("python-pytest" ,python-pytest)))
    (inputs
     `(("python" ,python)
       ("python-pycairo" ,python-pycairo)
       ("gobject-introspection" ,gobject-introspection)))
    (propagated-inputs
     ;; pygobject-3.0.pc refers to all these.
     `(("glib" ,glib)
       ("libffi" ,libffi)))
    ;; For finding typelib files, since gobject-introscpetion isn't propagated.
    (native-search-paths (package-native-search-paths gobject-introspection))
    (home-page "https://live.gnome.org/PyGObject")
    (synopsis "Python bindings for GObject")
    (description
     "Python bindings for GLib, GObject, and GIO.")
    (license license:lgpl2.1+)
    (properties `((python2-variant . ,(delay python2-pygobject))))))

(define-public python2-pygobject
  (let ((base (strip-python2-variant python-pygobject)))
    (package/inherit base
      (name "python2-pygobject")

      ;; Note: We use python-build-system here, because Meson only supports
      ;; Python 3, and needs PYTHONPATH etc set up correctly, which makes it
      ;; difficult to use for Python 2 projects.
      (build-system python-build-system)
      (arguments
       `(#:python ,python-2
         #:phases
         (modify-phases %standard-phases
           (add-after 'unpack 'delete-broken-tests
             (lambda _
               ;; FIXME: this test freezes and times out.
               (delete-file "tests/test_mainloop.py")
               ;; FIXME: this test fails with this kind of error:
               ;; AssertionError: <Handlers.SIG_IGN: 1> != <built-in function default_int_handler
               (delete-file "tests/test_ossig.py")
               #t)))))
      (inputs
       `(("python-pycairo" ,python2-pycairo)
         ("gobject-introspection" ,gobject-introspection)))
      (native-inputs
       `(("glib-bin" ,glib "bin")
         ("pkg-config" ,pkg-config)
         ("python-pytest" ,python2-pytest))))))

(define-public perl-glib
  (package
    (name "perl-glib")
    (version "1.3292")
    (source (origin
              (method url-fetch)
              (uri (string-append
                    "mirror://cpan/authors/id/X/XA/XAOC/Glib-"
                    version ".tar.gz"))
              (sha256
               (base32
                "1q5075d6v2g5sm675hyzrcpxsrh09z83crfci8b0wl3jwmnz0frg"))))
    (build-system perl-build-system)
    (native-inputs
     `(("perl-extutils-depends" ,perl-extutils-depends)
       ("perl-extutils-pkgconfig" ,perl-extutils-pkgconfig)))
    (inputs
     `(("glib" ,glib)))
    (home-page "https://metacpan.org/release/Glib")
    (synopsis "Perl wrappers for the GLib utility and Object libraries")
    (description "This module provides perl access to GLib and GLib's GObject
libraries.  GLib is a portability and utility library; GObject provides a
generic type system with inheritance and a powerful signal system.  Together
these libraries are used as the foundation for many of the libraries that make
up the Gnome environment, and are used in many unrelated projects.")
    (license license:lgpl2.1+)))

(define telepathy-glib
  (package
    (name "telepathy-glib")
    (version "0.24.1")
    (source
     (origin
      (method url-fetch)
       (uri
        (string-append
         "https://telepathy.freedesktop.org/releases/telepathy-glib/"
         "telepathy-glib-" version ".tar.gz"))
       (sha256
        (base32
         "1symyzbjmxvksn2ifdkk50lafjm2llf2sbmky062gq2pz3cg23cy"))
       (patches
        (list
         (search-patch "telepathy-glib-channel-memory-leak.patch")
         ;; Don't use the same test name for multiple tests.
         ;; <https://bugs.freedesktop.org/show_bug.cgi?id=92245>
         (origin
           (method url-fetch)
           (uri "https://bugs.freedesktop.org/attachment.cgi?id=118608")
           (file-name (string-append "telepathy-glib-duplicate-tests.patch"))
           (sha256
            (base32
             "0z261fwrszxb28ccg3hsg9rizig4s84zvwmx6y31a4pyv7bvs5w3")))))))
    (build-system gnu-build-system)
    (arguments
     '(#:configure-flags '("--enable-vala-bindings")

       ;; '../tools/glib-*.py' generate files but the target dependencies are
       ;; (presumably) not fully specified in the makefile, leading to
       ;; parallel build errors like:
       ;;
       ;;   EOFError: EOF read where object expected
       ;;   make[2]: *** [Makefile:1906: _gen/register-dbus-glib-marshallers-body.h] Error 1
       #:parallel-build? #f
       #:phases
       (modify-phases %standard-phases
         (add-after 'unpack 'disable-failing-tests
           (lambda _
             ;; None of the tests below are able to find the org.gtk.vfs.Daemon
             ;; service file provided by gvfs.
             (substitute* "tests/dbus/Makefile.in"
               (("test-contacts\\$\\(EXEEXT\\)") "")
               (("test-file-transfer-channel\\$\\(EXEEXT\\)") "")
               (("test-stream-tube\\$\\(EXEEXT\\)") ""))
             #t)))))
    (native-inputs
     `(("glib" ,glib "bin") ; uses glib-mkenums
       ("gobject-introspection" ,gobject-introspection)
       ("pkg-config" ,pkg-config)
       ("python" ,python-2)
       ("vala" ,vala)
       ("xsltproc" ,libxslt)))
    (propagated-inputs
     ;; There are all in the Requires.private field of telepathy-glib.pc.
     `(("dbus" ,dbus)
       ("dbus-glib" ,dbus-glib)
       ("glib" ,glib)))
    (home-page "https://telepathy.freedesktop.org/wiki/")
    (synopsis "GLib Real-time communications framework over D-Bus")
    (description "Telepathy is a flexible, modular communications framework
that enables real-time communication over D-Bus via pluggable protocol
backends.  Telepathy is a communications service that can be accessed by
many applications simultaneously.

This package provides the library for GLib applications.")
    (license license:lgpl2.1+)))

(define-public dbus-c++
  (package
    (name "dbus-c++")
    (version "0.9.0")
    (source (origin
              (method url-fetch)
              (uri
               (string-append
                "mirror://sourceforge/dbus-cplusplus/dbus-c%2B%2B/"
                version "/libdbus-c%2B%2B-" version ".tar.gz"))
              (file-name (string-append name "-" version ".tar.gz"))
              (patches (search-patches "dbus-c++-gcc-compat.patch"
                                       "dbus-c++-threading-mutex.patch"))
              (sha256
               (base32
                "0qafmy2i6dzx4n1dqp6pygyy6gjljnb7hwjcj2z11c1wgclsq4dw"))))
    (build-system gnu-build-system)
    (propagated-inputs
     `(("dbus" ,dbus)))                      ;mentioned in the pkg-config file
    (inputs
     `(("efl" ,efl)
       ("expat" ,expat)
       ("glib" ,glib)))
    (native-inputs
     `(("pkg-config" ,pkg-config)))
    (arguments
     `(;; The 'configure' machinery fails to detect that it needs -lpthread.
       #:configure-flags (list "LDFLAGS=-lpthread")
       #:phases
       (modify-phases %standard-phases
         (add-before 'configure 'add-missing-header
           (lambda _
             (substitute* "include/dbus-c++/eventloop-integration.h"
               (("#include <errno.h>")
                "#include <errno.h>\n#include <unistd.h>"))
             #t)))))
    (synopsis "D-Bus API for C++")
    (description "This package provides D-Bus client API bindings for the C++
programming language.  It also provides the @command{dbusxx-xml2cpp} and
@command{dbusxx-introspect} commands.")
    (home-page "https://sourceforge.net/projects/dbus-cplusplus/")
    (license license:lgpl2.1+)))

(define-public dbus-cxx
  (package
    (name "dbus-cxx")
    (version "0.12.0")
    (source (origin
              (method url-fetch)
              (uri (string-append "mirror://sourceforge/dbus-cxx/dbus-cxx/"
                                  version "/dbus-cxx-" version ".tar.gz"))
              (sha256
               (base32
                "1acsgpkd9v7b9jdc79ijmh9dbdfrzgkwkaff518i3zpk7y6g5mzw"))))
    (build-system cmake-build-system)
    (arguments
     `(#:configure-flags '("-DENABLE_TESTS=ON"
                           "-DENABLE_TOOLS=ON"
                           "-DENABLE_GLIBMM=ON")))
    (inputs `(("dbus" ,dbus)
              ("libsigc++" ,libsigc++)
              ("glibmm" ,glibmm)
              ("python" ,python)
              ("popt" ,popt)
              ("expat" ,expat)))
    (native-inputs `(("pkg-config" ,pkg-config)
                     ("m4" ,m4)))
    (synopsis "C++ wrapper for dbus")
    (description "Dbus-cxx is a C++ wrapper for dbus.\n
It exposes the C API to allow direct manipulation and
relies on sigc++ to provide an Oriented Object interface.\n
This package provide 2 utils:
@enumerate
@item @command{dbus-cxx-xml2cpp} to generate proxy and adapter
@item @command{dbus-cxx-introspect} to introspect a dbus interface
@end enumerate

Some codes examples can be find at:
@url{https://dbus-cxx.github.io/examples.html}")
    (home-page "https://dbus-cxx.github.io/")
    (license license:gpl3)))

(define-public appstream-glib
  (package
    (name "appstream-glib")
    (version "0.7.18")
    (source (origin
              (method url-fetch)
              (uri (string-append "https://people.freedesktop.org/~hughsient/"
                                  "appstream-glib/releases/"
                                  "appstream-glib-" version ".tar.xz"))
              (sha256
               (base32
                "00j0kkgf224nzmrha72g8pd72mymhph7vaisj35i4ffy7cpd47na"))))
    (build-system meson-build-system)
    (native-inputs
     `(("gettext" ,gettext-minimal)
       ("gsettings" ,gsettings-desktop-schemas) ; for ‘org.gnome.system.proxy’
       ("glib:bin" ,glib "bin")         ; for glib-compile-resources
       ("pkg-config" ,pkg-config)))
    (propagated-inputs
     `(("gcab" ,gcab) ; for .pc file
       ("gdk-pixbuf" ,gdk-pixbuf) ; for .pc file
       ("libuuid" ,util-linux "lib"))) ; for .pc file
    (inputs
     `(("glib" ,glib)
       ("gperf" ,gperf)
       ("gtk+" ,gtk+)
       ("json-glib" ,json-glib)
       ("libarchive" ,libarchive)
       ("libsoup" ,libsoup)))
    (arguments
     `(#:configure-flags
       (list "-Ddep11=false"
             "-Dintrospection=false"    ; avoid g-ir-scanner dependency
             "-Drpm=false"
             "-Dstemmer=false")
       #:phases
       (modify-phases %standard-phases
         (add-after 'unpack 'patch-tests
           (lambda _
             (substitute* "libappstream-glib/as-self-test.c"
               (("g_test_add_func.*as_test_store_local_appdata_func);") ""))
             #t)))))
    (home-page "https://github.com/hughsie/appstream-glib")
    (synopsis "Library for reading and writing AppStream metadata")
    (description "This library provides objects and helper methods to help
reading and writing @uref{https://www.freedesktop.org/wiki/Distributions/AppStream,AppStream}
metadata.")
    (license license:lgpl2.1+)))

(define perl-net-dbus
  (package
    (name "perl-net-dbus")
    (version "1.1.0")
    (source
     (origin
       (method url-fetch)
       (uri (string-append "mirror://cpan/authors/id/D/DA/DANBERR/Net-DBus-"
                           version ".tar.gz"))
       (sha256
        (base32
         "0sg2w147b9r9ykfzjs7y9qxry73xkjnhnk4qf95kfv79p5nnk4c3"))))
    (build-system perl-build-system)
    (native-inputs
     `(("pkg-config" ,pkg-config)
       ("perl-test-pod" ,perl-test-pod)
       ("perl-test-pod-coverage" ,perl-test-pod-coverage)))
    (inputs
     `(("dbus" ,dbus)))
    (propagated-inputs
     `(("perl-xml-twig" ,perl-xml-twig)))
    (home-page "https://metacpan.org/release/Net-DBus")
    (synopsis "Extension for the DBus bindings")
    (description "@code{Net::DBus} provides a Perl XS API to the DBus
inter-application messaging system.  The Perl API covers the core base level
of the DBus APIs, not concerning itself yet with the GLib or QT wrappers.")
    (license license:perl-license)))

(define perl-net-dbus-glib
  (package
    (name "perl-net-dbus-glib")
    (version "0.33.0")
    (source
     (origin
       (method url-fetch)
       (uri (string-append "mirror://cpan/authors/id/D/DA/DANBERR/"
                           "Net-DBus-GLib-" version ".tar.gz"))
       (sha256
        (base32
         "1z4mbv8z0rad604xahijpg5szzi8qak07hbahh230z4jf96fkxvj"))))
    (build-system perl-build-system)
    (native-inputs
     `(("pkg-config" ,pkg-config)))
    (inputs
     `(("dbus-glib" ,dbus-glib)))
    (home-page "https://metacpan.org/release/Net-DBus-GLib")
    (synopsis "Perl extension for the DBus GLib bindings")
    (description "This package provides an extension to the @code{Net::DBus}
module allowing integration with the GLib mainloop.  To integrate with the
main loop, simply get a connection to the bus via the methods in
@code{Net::DBus::GLib} rather than the usual @code{Net::DBus} module.  Every
other API remains the same.")
    (license license:gpl2+)))

(define-public template-glib
  (package
    (name "template-glib")
    (version "3.34.0")
    (source (origin
              (method url-fetch)
              (uri (string-append "mirror://gnome/sources/" name "/"
                                  (version-major+minor version) "/"
                                  name "-" version ".tar.xz"))
              (sha256
               (base32
                "1z9xkin5fyfh071ma9y045jcw83hgx33dfbjraw6cxk0qdmfysr1"))))
    (build-system meson-build-system)
    (arguments
     `(#:configure-flags '("-D" "enable_gtk_doc=true")))
    (inputs
     `(("gettext" ,gettext-minimal)
       ("glib" ,glib)
       ("gobject-introspection" ,gobject-introspection)))
    (native-inputs
     `(("bison" ,bison)
       ("flex" ,flex)
       ("glib:bin" ,glib "bin") ;; For glib-mkenums
       ("gtk-doc" ,gtk-doc/stable)
       ("pkg-config" ,pkg-config)
       ("vala" ,vala)))
    (home-page "https://gitlab.gnome.org/GNOME/template-glib")
    (synopsis "Library for template expansion")
    (description
     "Template-GLib is a library to help you generate text based on a template and
user defined state.  Template-GLib does not use a language runtime, so it is
safe to use from any GObject-Introspectable language.

Template-GLib allows you to access properties on GObjects as well as call
simple methods via GObject-Introspection.")
    (license license:lgpl2.1+)))

(define-public xdg-dbus-proxy
  (package
    (name "xdg-dbus-proxy")
    (version "0.1.2")
    (source (origin
              (method url-fetch)
              (uri (string-append "https://github.com/flatpak/xdg-dbus-proxy"
                                  "/releases/download/" version
                                  "/xdg-dbus-proxy-" version ".tar.xz"))
              (sha256
               (base32
                "03sj1h0c2l08xa8phw013fnxr4fgav7l2mkjhzf9xk3dykwxcj8p"))))
    (build-system gnu-build-system)
    (native-inputs
     `(("pkg-config" ,pkg-config)

       ;; For tests.
       ("dbus" ,dbus)

       ;; These are required to build the manual.
       ("docbook-xml" ,docbook-xml-4.3)
       ("docbook-xsl" ,docbook-xsl)
       ("libxml2" ,libxml2)
       ("xsltproc" ,libxslt)))
    (inputs
     `(("glib" ,glib)))
    (home-page "https://github.com/flatpak/xdg-dbus-proxy")
    (synopsis "D-Bus connection proxy")
    (description
     "xdg-dbus-proxy is a filtering proxy for D-Bus connections.  It can be
used to create D-Bus sockets inside a Linux container that forwards requests
to the host system, optionally with filters applied.")
    (license license:lgpl2.1+)))

(define-public dbus-test-runner
  (package
    (name "dbus-test-runner")
    (version "19.04.0")
    (source (origin
              (method url-fetch)
              (uri (string-append
                    "https://launchpad.net/dbus-test-runner/"
                    (version-major+minor version) "/" version
                    "/+download/dbus-test-runner-" version ".tar.gz"))
              (sha256
               (base32
                "0xnbay58xn0hav208mdsg8dd176w57dcpw1q2k0g5fh9v7xk4nk4"))))
    (build-system gnu-build-system)
    (arguments
     `(#:phases
       (modify-phases %standard-phases
         (add-before 'configure 'fix-test-paths
           ;; add missing space
           (lambda* (#:key outputs #:allow-other-keys)
             (substitute* "Makefile.in"
               (("#!/bin/bash") (string-append "#!" (which "bash"))))
             (substitute* "tests/Makefile.in"
               (("/bin/sh") (which "sh"))
               (("#!/bin/bash") (string-append "#!" (which "bash")))
               (("echo cat") (string-append "echo " (which "cat")))
               (("/bin/true") (which "true")))
             #t)))))
    (inputs
     `(("gtk+" ,gtk+)
       ("glib" ,glib)
       ("dbus-glib" ,dbus-glib)))
    (native-inputs
     `(("glib:bin" ,glib "bin")
       ("intltool" ,intltool)
       ("pkg-config" ,pkg-config)
       ;; following used for tests
       ("python" ,python)
       ("python-dbusmock" ,python-dbusmock)
       ("xvfb" ,xorg-server-for-tests)))
    (home-page "https://launchpad.net/dbus-test-runner")
    (synopsis "Run a executables under a new DBus session for testing")
    (description "A small little utility to run a couple of executables under a
new DBus session for testing.")
    (license license:gpl3)))