gnu/packages/ebook.scm

   1 ;;; GNU Guix --- Functional package management for GNU
   2 ;;; Copyright © 2015, 2016 Andreas Enge <andreas@enge.fr>
   3 ;;; Copyright © 2016, 2018 Efraim Flashner <efraim@flashner.co.il>
   4 ;;; Copyright © 2016, 2017 Alex Griffin <a@ajgrf.com>
   5 ;;; Copyright © 2017, 2019, 2020 Brendan Tildesley <mail@brendan.scot>
   6 ;;; Copyright © 2017 Roel Janssen <roel@gnu.org>
   7 ;;; Copyright © 2018, 2019 Tobias Geerinckx-Rice <me@tobias.gr>
   8 ;;; Copyright © 2020 Marius Bakke <mbakke@fastmail.com>
   9 ;;; Copyright © 2020 Vinicius Monego <monego@posteo.net>
  10 ;;;
  11 ;;; This file is part of GNU Guix.
  12 ;;;
  13 ;;; GNU Guix is free software; you can redistribute it and/or modify it
  14 ;;; under the terms of the GNU General Public License as published by
  15 ;;; the Free Software Foundation; either version 3 of the License, or (at
  16 ;;; your option) any later version.
  17 ;;;
  18 ;;; GNU Guix is distributed in the hope that it will be useful, but
  19 ;;; WITHOUT ANY WARRANTY; without even the implied warranty of
  20 ;;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  21 ;;; GNU General Public License for more details.
  22 ;;;
  23 ;;; You should have received a copy of the GNU General Public License
  24 ;;; along with GNU Guix.  If not, see <http://www.gnu.org/licenses/>.
  25
  26 (define-module (gnu packages ebook)
  27   #:use-module ((guix licenses) #:prefix license:)
  28   #:use-module (guix packages)
  29   #:use-module (guix download)
  30   #:use-module (guix utils)
  31   #:use-module (guix git-download)
  32   #:use-module (guix build-system gnu)
  33   #:use-module (guix build-system meson)
  34   #:use-module (guix build-system python)
  35   #:use-module (gnu packages)
  36   #:use-module (gnu packages compression)
  37   #:use-module (gnu packages curl)
  38   #:use-module (gnu packages databases)
  39   #:use-module (gnu packages file)
  40   #:use-module (gnu packages fonts)
  41   #:use-module (gnu packages fontutils)
  42   #:use-module (gnu packages freedesktop)
  43   #:use-module (gnu packages fribidi)
  44   #:use-module (gnu packages gcc)
  45   #:use-module (gnu packages gettext)
  46   #:use-module (gnu packages gtk)
  47   #:use-module (gnu packages gnome)
  48   #:use-module (gnu packages glib)
  49   #:use-module (gnu packages gstreamer)
  50   #:use-module (gnu packages icu4c)
  51   #:use-module (gnu packages image)
  52   #:use-module (gnu packages javascript)
  53   #:use-module (gnu packages libusb)
  54   #:use-module (gnu packages libreoffice)
  55   #:use-module (gnu packages music)
  56   #:use-module (gnu packages pdf)
  57   #:use-module (gnu packages pkg-config)
  58   #:use-module (gnu packages python)
  59   #:use-module (gnu packages python-web)
  60   #:use-module (gnu packages python-xyz)
  61   #:use-module (gnu packages qt)
  62   #:use-module (gnu packages serialization)
  63   #:use-module (gnu packages sqlite)
  64   #:use-module (gnu packages time)
  65   #:use-module (gnu packages tls)
  66   #:use-module (gnu packages web)
  67   #:use-module (gnu packages xml)
  68   #:use-module (gnu packages xorg)
  69   #:use-module (gnu packages wxwidgets))
  70
  71 (define-public chmlib
  72   (package
  73     (name "chmlib")
  74     (version "0.40")
  75     (source (origin
  76              (method url-fetch)
  77              (uri (string-append "http://www.jedrea.com/chmlib/chmlib-"
  78                                  version ".tar.bz2"))
  79              (sha256
  80                (base32
  81                 "18zzb4x3z0d7fjh1x5439bs62dmgsi4c1pg3qyr7h5gp1i5xcj9l"))
  82              (patches (search-patches "chmlib-inttypes.patch"))))
  83     (build-system gnu-build-system)
  84     (home-page "http://www.jedrea.com/chmlib/")
  85     (synopsis "Library for CHM files")
  86     (description "CHMLIB is a library for dealing with ITSS/CHM format files.")
  87     (license license:lgpl2.1+)))
  88
  89 (define-public calibre
  90   (package
  91     (name "calibre")
  92     (version "4.18.0")
  93     (source
  94       (origin
  95         (method url-fetch)
  96         (uri (string-append "http://download.calibre-ebook.com/"
  97                             version "/calibre-"
  98                             version ".tar.xz"))
  99         (sha256
 100          (base32
 101           "0w9pcfvskjh4v00vjw3i6hzrafy863pgsmmqdx4lffip3p856brw"))
 102         (modules '((guix build utils)))
 103         (snippet
 104           '(begin
 105              ;; Unbundle python2-odfpy.
 106              (delete-file-recursively "src/odf")
 107              ;; Disable test that attempts to load it.
 108              (substitute* "setup/test.py"
 109                ((".*SRC, 'odf'.*")
 110                 ""))
 111
 112              ;; Remove unneeded resources.
 113              (delete-file "resources/viewer.js")
 114              (delete-file "resources/viewer.html")
 115              (delete-file "resources/mozilla-ca-certs.pem")
 116              (delete-file "resources/calibre-portable.bat")
 117              (delete-file "resources/calibre-portable.sh")
 118              #t))
 119         (patches (search-patches "calibre-no-updates-dialog.patch"
 120                                  "calibre-remove-test-sqlite.patch" ; TODO: fix test.
 121                                  "calibre-remove-test-unrar.patch"))))
 122     (build-system python-build-system)
 123     (native-inputs
 124      `(("pkg-config" ,pkg-config)
 125        ("qtbase" ,qtbase) ; for qmake
 126        ("python2-flake8" ,python2-flake8)
 127        ("xdg-utils" ,xdg-utils)))
 128     (inputs
 129      `(("chmlib" ,chmlib)
 130        ("fontconfig" ,fontconfig)
 131        ("font-liberation" ,font-liberation)
 132        ("glib" ,glib)
 133        ("hunspell" ,hunspell)
 134        ("hyphen" ,hyphen)
 135        ("icu4c" ,icu4c)
 136        ("js-mathjax" ,js-mathjax)
 137        ("libmtp" ,libmtp)
 138        ("libpng" ,libpng)
 139        ("libusb" ,libusb)
 140        ("openssl" ,openssl)
 141        ("optipng" ,optipng)
 142        ("podofo" ,podofo)
 143        ("poppler" ,poppler)
 144        ("python" ,python-2)
 145        ("python2-apsw" ,python2-apsw)
 146        ("python2-beautifulsoup4" ,python2-beautifulsoup4)
 147        ("python2-chardet" ,python2-chardet)
 148        ("python2-cssselect" ,python2-cssselect)
 149        ("python2-css-parser" ,python2-css-parser)
 150        ("python2-dateutil" ,python2-dateutil)
 151        ("python2-dbus" ,python2-dbus)
 152        ("python2-dnspython" ,python2-dnspython)
 153        ("python2-dukpy" ,python2-dukpy)
 154        ("python2-feedparser" ,python2-feedparser)
 155        ("python2-html2text" ,python2-html2text)
 156        ("python2-html5-parser" ,python2-html5-parser)
 157        ("python2-html5lib" ,python2-html5lib)
 158        ("python2-lxml" ,python2-lxml)
 159        ("python2-markdown" ,python2-markdown)
 160        ("python2-mechanize" ,python2-mechanize)
 161        ;; python2-msgpack is needed for the network content server to work.
 162        ("python2-msgpack" ,python2-msgpack)
 163        ("python2-netifaces" ,python2-netifaces)
 164        ("python2-odfpy" ,python2-odfpy)
 165        ("python2-pillow" ,python2-pillow)
 166        ("python2-psutil" ,python2-psutil)
 167        ("python2-pygments" ,python2-pygments)
 168        ("python2-pyqtwebengine" ,python2-pyqtwebengine)
 169        ("python2-pyqt" ,python2-pyqt)
 170        ("python2-sip" ,python2-sip)
 171        ("python2-regex" ,python2-regex)
 172        ("qtwebengine" ,qtwebengine)
 173        ("sqlite" ,sqlite)))
 174     (arguments
 175      `(#:python ,python-2
 176        ;; Calibre is using setuptools by itself, but the setup.py is not
 177        ;; compatible with the shim wrapper (taken from pip) we are using.
 178        #:use-setuptools? #f
 179        #:phases
 180        (modify-phases %standard-phases
 181          (add-after 'unpack 'patch-source
 182            (lambda _
 183              (substitute* "src/calibre/linux.py"
 184                ;; We can't use the uninstaller in Guix. Don't build it.
 185                (("self\\.create_uninstaller()") ""))
 186              #t))
 187          (add-after 'patch-source-shebangs 'patch-more-shebangs
 188            (lambda _
 189              ;; Patch various inline shebangs.
 190              (substitute* '("src/calibre/gui2/preferences/tweaks.py"
 191                             "src/calibre/gui2/dialogs/custom_recipes.py"
 192                             "setup/install.py"
 193                             "setup/linux-installer.sh")
 194                (("#!/usr/bin/env python")
 195                 (string-append "#!" (which "python")))
 196                (("#!/bin/sh")
 197                 (string-append "#!" (which "sh"))))
 198              #t))
 199          (add-after 'unpack 'dont-load-remote-icons
 200            (lambda _
 201              (substitute* "setup/plugins_mirror.py"
 202                (("href=\"//calibre-ebook.com/favicon.ico\"")
 203                 "href=\"favicon.ico\""))
 204              #t))
 205          (add-before 'build 'configure
 206           (lambda* (#:key inputs outputs #:allow-other-keys)
 207             (let ((podofo (assoc-ref inputs "podofo"))
 208                   (pyqt (assoc-ref inputs "python2-pyqt"))
 209                   (python-sip (assoc-ref inputs "python2-sip"))
 210                   (out (assoc-ref outputs "out")))
 211               (substitute* "setup/build_environment.py"
 212                 (("= get_sip_dir\\(\\)")
 213                  (string-append "= '" pyqt "/share/sip'")))
 214
 215               (substitute* "src/calibre/ebooks/pdf/pdftohtml.py"
 216                 (("PDFTOHTML = 'pdftohtml'")
 217                  (string-append "PDFTOHTML = \"" (assoc-ref inputs "poppler")
 218                                 "/bin/pdftohtml\"")))
 219
 220               ;; Calibre thinks we are installing desktop files into a home
 221               ;; directory, but here we butcher the script in to installing
 222               ;; to calibres /share directory.
 223               (setenv "XDG_DATA_HOME" (string-append out "/share"))
 224               (substitute* "src/calibre/linux.py"
 225                 (("'~/.local/share'") "''"))
 226
 227               ;; 'python setup.py rapydscript' uses QtWebEngine, which
 228               ;; needs to create temporary files in $HOME.
 229               (setenv "HOME" "/tmp")
 230
 231               ;; XXX: QtWebEngine will fail if no fonts are available.  This
 232               ;; can likely be removed when fontconfig has been patched to
 233               ;; include TrueType fonts by default.
 234               (symlink (string-append (assoc-ref inputs "font-liberation")
 235                                       "/share/fonts")
 236                        "/tmp/.fonts")
 237
 238               (setenv "SIP_BIN" (string-append python-sip "/bin/sip"))
 239               (setenv "PODOFO_INC_DIR" (string-append podofo "/include/podofo"))
 240               (setenv "PODOFO_LIB_DIR" (string-append podofo "/lib"))
 241               ;; This informs the tests we are a continuous integration
 242               ;; environment and thus have no networking.
 243               (setenv "CI" "true")
 244               ;; The Qt test complains about being unable to load all image plugins, and I
 245               ;; notice the available plugins list it shows lacks 'svg'. Adding qtsvg doesn't
 246               ;; fix it, so I'm not sure how to fix it.  TODO: Fix test and remove this.
 247               (setenv "SKIP_QT_BUILD_TEST" "true")
 248               #t)))
 249          (add-after 'build 'build-extra
 250            (lambda* (#:key inputs #:allow-other-keys)
 251              (invoke "python2" "setup.py" "mathjax""--system-mathjax"
 252                      "--path-to-mathjax" (string-append
 253                                           (assoc-ref inputs "js-mathjax")
 254                                           "/share/javascript/mathjax"))
 255              (invoke "python2" "setup.py" "rapydscript")
 256              #t))
 257          (add-after 'install 'install-man-pages
 258            (lambda* (#:key outputs #:allow-other-keys)
 259              (copy-recursively
 260               "man-pages"
 261               (string-append (assoc-ref outputs "out") "/share/man"))
 262              #t))
 263          ;; The font TTF files are used in some miscellaneous tests, so we
 264          ;; unbundle them here to avoid patching the tests.
 265          (add-after 'install 'unbundle-font-liberation
 266            (lambda* (#:key inputs outputs #:allow-other-keys)
 267              (let ((font-dest (string-append (assoc-ref outputs "out")
 268                                              "/share/calibre/fonts/liberation"))
 269                    (font-src (string-append (assoc-ref inputs "font-liberation")
 270                                             "/share/fonts/truetype")))
 271                (delete-file-recursively font-dest)
 272                (symlink font-src font-dest))
 273              #t))
 274          ;; Make run-time dependencies available to the binaries.
 275          (add-after 'wrap 'wrap-program
 276            (lambda* (#:key inputs outputs #:allow-other-keys)
 277              (let ((out (assoc-ref outputs "out"))
 278                    (qtwebengine (assoc-ref inputs "qtwebengine")))
 279                (with-directory-excursion (string-append out "/bin")
 280                  (for-each
 281                   (lambda (binary)
 282                     (wrap-program binary
 283                       ;; Make QtWebEngineProcess available.
 284                       `("QTWEBENGINEPROCESS_PATH" ":" =
 285                         ,(list (string-append
 286                                 qtwebengine
 287                                 "/lib/qt5/libexec/QtWebEngineProcess")))))
 288                   ;; Wrap all the binaries shipping with the package, except
 289                   ;; for the wrappings created during the 'wrap standard
 290                   ;; phase.  This extends existing .calibre-real wrappers
 291                   ;; rather than create ..calibre-real-real-s.  For more
 292                   ;; information see: https://issues.guix.gnu.org/43249.
 293                   (find-files "." (lambda (file stat)
 294                                     (not (wrapper? file)))))))
 295              #t)))))
 296     (home-page "https://calibre-ebook.com/")
 297     (synopsis "E-book library management software")
 298     (description "Calibre is an e-book library manager.  It can view, convert
 299 and catalog e-books in most of the major e-book formats.  It can also talk
 300 to many e-book reader devices.  It can go out to the Internet and fetch
 301 metadata for books.  It can download newspapers and convert them into
 302 e-books for convenient reading.")
 303     ;; Calibre is largely GPL3+, but includes a number of components covered
 304     ;; by other licenses. See COPYRIGHT for more details.
 305     (license (list license:gpl3+
 306                    license:gpl2+
 307                    license:lgpl2.1+
 308                    license:lgpl2.1
 309                    license:bsd-3
 310                    license:expat
 311                    license:zpl2.1
 312                    license:asl2.0
 313                    license:public-domain
 314                    license:silofl1.1
 315                    license:cc-by-sa3.0))))
 316
 317 (define-public liblinebreak
 318   (package
 319     (name "liblinebreak")
 320     (version "2.1")
 321     (source (origin
 322               (method url-fetch)
 323               (uri (string-append "mirror://sourceforge/vimgadgets"
 324                                   "/liblinebreak/" version
 325                                   "/liblinebreak-" version ".tar.gz"))
 326               (sha256
 327                (base32
 328                 "1f36dbq7nc77lln1by2n1yl050g9dc63viawhs3gc3169mavm36x"))))
 329     (build-system gnu-build-system)
 330     (home-page "http://vimgadgets.sourceforge.net/liblinebreak/")
 331     (synopsis "Library for detecting where linebreaks are allowed in text")
 332     (description "@code{liblinebreak} is an implementation of the line
 333 breaking algorithm as described in Unicode 6.0.0 Standard Annex 14,
 334 Revision 26.  It breaks lines that contain Unicode characters.  It is
 335 designed to be used in a generic text renderer.")
 336     (license license:zlib)))
 337
 338 (define-public fbreader
 339   (package
 340     (name "fbreader")
 341     (version "0.99.6")
 342     (source (origin
 343               (method git-fetch)
 344               (uri (git-reference
 345                      (url "https://github.com/geometer/FBReader")
 346                      (commit (string-append version "-freebsdport"))))
 347               (file-name (git-file-name name version))
 348               (sha256
 349                (base32
 350                 "0c0s4silpax74kwfz3dfmzn4lkv6jsyb800vfak166vii0hvbv3d"))
 351               (patches (search-patches "fbreader-curl-7.62.patch"))))
 352     (build-system gnu-build-system)
 353     (inputs
 354      `(("curl" ,curl)
 355        ("expat" ,expat)
 356        ("fribidi" ,fribidi)
 357        ("glib" ,glib)
 358        ("gtk+-2" ,gtk+-2)
 359        ("libjpeg" ,libjpeg-turbo)
 360        ("liblinebreak" ,liblinebreak)
 361        ("libxft" ,libxft)
 362        ("sqlite" ,sqlite)
 363        ("zlib" ,zlib)))
 364     (native-inputs
 365      `(("gcc@5" ,gcc-5)
 366        ("pkg-config" ,pkg-config)))
 367     (arguments
 368      `(#:tests? #f ; No tests exist.
 369        #:make-flags `("CC=gcc" "TARGET_ARCH=desktop" "UI_TYPE=gtk"
 370                       "TARGET_STATUS=release"
 371                       ,(string-append "INSTALLDIR="
 372                                       (assoc-ref %outputs "out"))
 373                       ,(string-append "LDFLAGS=-Wl,-rpath="
 374                                       (assoc-ref %outputs "out") "/lib"))
 375        #:phases
 376        (modify-phases %standard-phases
 377          (add-after 'set-paths 'augment-CPLUS_INCLUDE_PATH
 378            (lambda* (#:key inputs #:allow-other-keys)
 379              ;; Hide the default GCC from CPLUS_INCLUDE_PATH to prevent a header
 380              ;; conflict with the GCC provided in native-inputs.
 381              (let ((gcc (assoc-ref inputs "gcc")))
 382                (setenv "CPLUS_INCLUDE_PATH"
 383                        (string-join
 384                         (delete (string-append gcc "/include/c++")
 385                                 (string-split (getenv "CPLUS_INCLUDE_PATH")
 386                                               #\:))
 387                         ":"))
 388                #t)))
 389          (delete 'configure)
 390          (add-after 'unpack 'fix-install-locations
 391            (lambda* (#:key outputs #:allow-other-keys)
 392              (let ((out (assoc-ref outputs "out")))
 393                (substitute* "fbreader/desktop/Makefile"
 394                  (("/usr") out))
 395                #t))))))
 396     (home-page "https://fbreader.org/")
 397     (synopsis "E-Book reader")
 398     (description "@code{fbreader} is an E-Book reader.  It supports the
 399 following formats:
 400
 401 @enumerate
 402 @item CHM
 403 @item Docbook
 404 @item FB2
 405 @item HTML
 406 @item OEB
 407 @item PDB
 408 @item RTF
 409 @item TCR
 410 @item TXT
 411 @item XHTML
 412 @end enumerate")
 413     (license license:gpl2+)))
 414
 415 (define-public cozy
 416   (package
 417     (name "cozy")
 418     (version "0.6.19")
 419     (source
 420      (origin
 421        (method git-fetch)
 422        (uri (git-reference
 423              (url "https://github.com/geigi/cozy")
 424              (commit version)))
 425        (file-name (git-file-name name version))
 426        (sha256
 427         (base32 "1f1qydjs8sz39yhlg9qdjf31vrsmdk2pxiimw4fzsy1k2zr5dr34"))))
 428     (build-system meson-build-system)
 429     (arguments
 430      `(#:glib-or-gtk? #t
 431        #:phases
 432        (modify-phases %standard-phases
 433          (add-after 'unpack 'patch-desktop-file
 434            (lambda _
 435              (substitute* "data/com.github.geigi.cozy.desktop.in"
 436                (("com.github.geigi.cozy") "cozy"))
 437              #t))
 438          (add-after 'install 'patch-executable-name
 439            (lambda* (#:key outputs #:allow-other-keys)
 440              (with-directory-excursion
 441                  (string-append (assoc-ref outputs "out") "/bin")
 442                (rename-file "com.github.geigi.cozy" "cozy"))
 443              #t))
 444          (add-after 'wrap 'wrap-libs
 445            (lambda* (#:key outputs #:allow-other-keys)
 446              (let* ((out               (assoc-ref outputs "out"))
 447                     (pylib             (string-append
 448                                         out "/lib/python"
 449                                         ,(version-major+minor
 450                                           (package-version python))
 451                                         "/site-packages"))
 452                     (gi-typelib-path   (getenv "GI_TYPELIB_PATH"))
 453                     (gst-plugin-path   (getenv "GST_PLUGIN_SYSTEM_PATH"))
 454                     (libmagic-path     (string-append
 455                                         (assoc-ref %build-inputs "file")
 456                                         "/lib"))
 457                     (python-path     (getenv "PYTHONPATH")))
 458                (wrap-program (string-append out "/bin/cozy")
 459                  `("LD_LIBRARY_PATH" ":" prefix (,libmagic-path))
 460                  `("GI_TYPELIB_PATH" ":" prefix (,gi-typelib-path))
 461                  `("GST_PLUGIN_SYSTEM_PATH" ":" prefix (,gst-plugin-path))
 462                  `("PYTHONPATH" ":" prefix (,python-path ,pylib))))
 463              #t)))))
 464     (native-inputs
 465      `(("desktop-file-utils" ,desktop-file-utils)
 466        ("gettext" ,gettext-minimal)
 467        ("glib:bin" ,glib "bin")
 468        ("gobject-introspection" ,gobject-introspection)
 469        ("gtk+:bin" ,gtk+ "bin")
 470        ("pkg-config" ,pkg-config)
 471        ("python" ,python-wrapper)))
 472     (inputs
 473      `(("file" ,file)
 474        ("gsettings-desktop-schemas" ,gsettings-desktop-schemas)
 475        ("gst-libav" ,gst-libav)
 476        ("gst-plugins-bad" ,gst-plugins-bad)
 477        ("gst-plugins-good" ,gst-plugins-good)
 478        ("gst-plugins-ugly" ,gst-plugins-ugly)
 479        ("gtk+" ,gtk+)
 480        ("python-apsw" ,python-apsw)
 481        ("python-distro" ,python-distro)
 482        ("python-gst" ,python-gst)
 483        ("python-mutagen" ,python-mutagen)
 484        ("python-peewee" ,python-peewee)
 485        ("python-pycairo" ,python-pycairo)
 486        ("python-pygobject" ,python-pygobject)
 487        ("python-pytz" ,python-pytz)
 488        ("python-requests" ,python-requests)))
 489     (home-page "https://cozy.geigi.de/")
 490     (synopsis "Modern audiobook player using GTK+")
 491     (description
 492      "Cozy is a modern audiobook player written in GTK+.
 493
 494 Some of the current features:
 495
 496 @itemize
 497 @item Import your audiobooks into Cozy to browse them comfortably
 498 @item Sort your audio books by author, reader & name
 499 @item Remembers your playback position
 500 @item Sleep timer
 501 @item Playback speed control
 502 @item Search your library
 503 @item Offline mode
 504 @item Add multiple storage locations
 505 @item Drag & Drop to import new audio books
 506 @item Support for DRM free mp3, m4a (aac, ALAC, …), flac, ogg, opus, wav files
 507 @item Mpris integration (Media keys & playback info for desktop environment)
 508 @end itemize")
 509     ;; TODO: Unbundle python-inject.
 510     (license (list license:gpl3+ ;cozy
 511                    license:asl2.0)))) ;python-inject (bundled dependency)
 512
 513 (define-public xchm
 514   (package
 515     (name "xchm")
 516     (version "1.31")
 517     (source (origin
 518               (method url-fetch)
 519               (uri (string-append "https://github.com/rzvncj/xCHM"
 520                                   "/releases/download/"
 521                                   version "/xchm-" version ".tar.gz"))
 522               (sha256
 523                (base32
 524                 "0aw6bysqiwbw75n3ad229ihlmh7chqs1wlxm0398z3lfp2y6n7qf"))))
 525     (build-system gnu-build-system)
 526     (inputs
 527      `(("wxwidgets" ,wxwidgets)
 528        ("chmlib" ,chmlib)))
 529     (native-inputs
 530      `(("pkg-config" ,pkg-config)))
 531     (home-page "https://github.com/rzvncj/xCHM")
 532     (synopsis "CHM file viewer")
 533     (description "xCHM is a graphical CHM file viewer.  It is a frontend to
 534 the CHM library CHMLIB.")
 535     (license license:gpl2+)))