;;; GNU Guix --- Functional package management for GNU
;;; Copyright © 2014 Eric Bavier <bavier@member.fsf.org>
;;; Copyright © 2015, 2016 Ricardo Wurmus <rekado@elephly.net>
;;; Copyright © 2015 Paul van der Walt <paul@denknerd.org>
;;; Copyright © 2016 Al McElrath <hello@yrns.org>
;;; Copyright © 2016 Efraim Flashner <efraim@flashner.co.il>
;;; Copyright © 2016 Leo Famulari <leo@famulari.name>
;;;
;;; This file is part of GNU Guix.
;;;
;;; GNU Guix is free software; you can redistribute it and/or modify it
;;; under the terms of the GNU General Public License as published by
;;; the Free Software Foundation; either version 3 of the License, or (at
;;; your option) any later version.
;;;
;;; GNU Guix is distributed in the hope that it will be useful, but
;;; WITHOUT ANY WARRANTY; without even the implied warranty of
;;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
;;; GNU General Public License for more details.
;;;
;;; You should have received a copy of the GNU General Public License
;;; along with GNU Guix.  If not, see <http://www.gnu.org/licenses/>.

(define-module (gnu packages music)
  #:use-module (guix utils)
  #:use-module (guix packages)
  #:use-module (guix download)
  #:use-module (guix git-download)
  #:use-module ((guix licenses) #:prefix license:)
  #:use-module (guix build-system gnu)
  #:use-module (guix build-system cmake)
  #:use-module (guix build-system python)
  #:use-module (guix build-system waf)
  #:use-module (gnu packages)
  #:use-module (gnu packages algebra)
  #:use-module (gnu packages audio)
  #:use-module (gnu packages autotools)
  #:use-module (gnu packages backup)
  #:use-module (gnu packages base) ;libbdf
  #:use-module (gnu packages bison)
  #:use-module (gnu packages boost)
  #:use-module (gnu packages cdrom)
  #:use-module (gnu packages code)
  #:use-module (gnu packages check)
  #:use-module (gnu packages compression)
  #:use-module (gnu packages curl)
  #:use-module (gnu packages docbook)
  #:use-module (gnu packages doxygen)
  #:use-module (gnu packages flex)
  #:use-module (gnu packages fltk)
  #:use-module (gnu packages fonts)
  #:use-module (gnu packages fontutils)
  #:use-module (gnu packages freedesktop)
  #:use-module (gnu packages gcc)
  #:use-module (gnu packages gnupg)
  #:use-module (gnu packages gettext)
  #:use-module (gnu packages ghostscript)
  #:use-module (gnu packages gl)
  #:use-module (gnu packages glib)
  #:use-module (gnu packages gnome)
  #:use-module (gnu packages gtk)
  #:use-module (gnu packages guile)
  #:use-module (gnu packages image)
  #:use-module (gnu packages imagemagick)
  #:use-module (gnu packages java)
  #:use-module (gnu packages linux) ; for alsa-utils
  #:use-module (gnu packages man)
  #:use-module (gnu packages mp3)
  #:use-module (gnu packages mpd)
  #:use-module (gnu packages ncurses)
  #:use-module (gnu packages netpbm)
  #:use-module (gnu packages pdf)
  #:use-module (gnu packages perl)
  #:use-module (gnu packages pkg-config)
  #:use-module (gnu packages pulseaudio) ;libsndfile
  #:use-module (gnu packages python)
  #:use-module (gnu packages qt)
  #:use-module (gnu packages rdf)
  #:use-module (gnu packages readline)
  #:use-module (gnu packages rsync)
  #:use-module (gnu packages tcl)
  #:use-module (gnu packages texinfo)
  #:use-module (gnu packages texlive)
  #:use-module (gnu packages video)
  #:use-module (gnu packages web)
  #:use-module (gnu packages xml)
  #:use-module (gnu packages xorg)
  #:use-module (gnu packages xiph)
  #:use-module (gnu packages zip)
  #:use-module ((srfi srfi-1) #:select (last)))

(define-public cmus
  (package
    (name "cmus")
    (version "2.7.1")
    (source (origin
              (method url-fetch)
              (uri (string-append
                    "https://github.com/" name "/" name "/archive/v"
                    version ".tar.gz"))
              (file-name (string-append name "-" version ".tar.gz"))
              (sha256
               (base32
                "0raixgjavkm7hxppzsc5zqbfbh2bhjcmbiplhnsxsmyj8flafyc1"))))
    (build-system gnu-build-system)
    (arguments
     `(#:tests? #f ; cmus does not include tests
       #:phases
       (modify-phases %standard-phases
         (replace
          'configure
          (lambda* (#:key outputs #:allow-other-keys)
            (let ((out (assoc-ref outputs "out")))

              ;; It's an idiosyncratic configure script that doesn't
              ;; understand --prefix=..; it wants prefix=.. instead.
              (zero?
               (system* "./configure"
                        (string-append "prefix=" out)))))))))
    ;; TODO: cmus optionally supports the following formats, which haven't yet
    ;; been added to Guix:
    ;;
    ;; - Roar, libroar
    ;;
    ;; - DISCID_LIBS, apparently different from cd-discid which is included in
    ;;   Guix.  See <http://sourceforge.net/projects/discid/>
    (native-inputs
     `(("pkg-config" ,pkg-config)))
    (inputs
     `(("alsa-lib" ,alsa-lib)
       ("ao" ,ao)
       ("ffmpeg" ,ffmpeg)
       ("flac" ,flac)
       ("jack" ,jack-1)
       ("libcddb" ,libcddb)
       ("libcdio-paranoia" ,libcdio-paranoia)
       ("libcue" ,libcue)
       ("libmad" ,libmad)
       ("libmodplug" ,libmodplug)
       ("libmpcdec" ,libmpcdec)
       ("libsamplerate" ,libsamplerate)
       ("libvorbis" ,libvorbis)
       ("ncurses" ,ncurses)
       ("opusfile" ,opusfile)
       ("pulseaudio" ,pulseaudio)
       ("wavpack" ,wavpack)))
     (home-page "https://cmus.github.io/")
     (synopsis "Small console music player")
     (description "Cmus is a small and fast console music player.  It supports
many input formats and provides a customisable Vi-style user interface.")
     (license license:gpl2+)))

(define-public hydrogen
  (package
    (name "hydrogen")
    (version "0.9.6.1")
    (source (origin
              (method url-fetch)
              (uri (string-append
                    "https://github.com/hydrogen-music/hydrogen/archive/"
                    version ".tar.gz"))
              (sha256
               (base32
                "0vxnaqfmcv7hhk0cj67imdcqngspnck7f0wfmvhfgfqa7x1xznll"))))
    (build-system cmake-build-system)
    (arguments
    `(#:test-target "tests"))
    (native-inputs
     `(("cppunit" ,cppunit)
       ("pkg-config" ,pkg-config)))
    (inputs
     `(("alsa-lib" ,alsa-lib)
       ("jack" ,jack-1)
       ;; ("ladspa" ,ladspa) ; cannot find during configure
       ("lash" ,lash)
       ("libarchive" ,libarchive)
       ("libsndfile" ,libsndfile)
       ("libtar" ,libtar)
       ("lrdf" ,lrdf)
       ("qt" ,qt-4)
       ("zlib" ,zlib)))
    (home-page "http://www.hydrogen-music.org")
    (synopsis "Drum machine")
    (description
     "Hydrogen is an advanced drum machine for GNU/Linux.  Its main goal is to
enable professional yet simple and intuitive pattern-based drum programming.")
    (license license:gpl2+)))

(define-public klick
  (package
    (name "klick")
    (version "0.12.2")
    (source (origin
              (method url-fetch)
              (uri (string-append "http://das.nasophon.de/download/klick-"
                                  version ".tar.gz"))
              (sha256
               (base32
                "0hmcaywnwzjci3pp4xpvbijnnwvibz7gf9xzcdjbdca910y5728j"))))
    (build-system gnu-build-system)
    (arguments
     `(#:tests? #f ;no "check" target
       #:phases
       ;; TODO: Add scons-build-system and use it here.
       (modify-phases %standard-phases
         (delete 'configure)
         (replace 'build
                  (lambda* (#:key inputs outputs #:allow-other-keys)
                    (let ((out (assoc-ref outputs "out")))
                      (mkdir-p out)
                      (zero? (system* "scons" (string-append "PREFIX=" out))))))
         (replace 'install (lambda _ (zero? (system* "scons" "install")))))))
    (inputs
     `(("boost" ,boost)
       ("jack" ,jack-1)
       ("libsndfile" ,libsndfile)
       ("libsamplerate" ,libsamplerate)
       ("liblo" ,liblo)
       ("rubberband" ,rubberband)))
    (native-inputs
     `(("scons" ,scons)
       ("python" ,python-2)
       ("pkg-config" ,pkg-config)))
    (home-page "http://das.nasophon.de/klick/")
    (synopsis "Metronome for JACK")
    (description
     "klick is an advanced command-line based metronome for JACK.  It allows
you to define complex tempo maps for entire songs or performances.")
    (license license:gpl2+)))

(define-public gtklick
  (package
    (name "gtklick")
    (version "0.6.4")
    (source (origin
              (method url-fetch)
              (uri (string-append "http://das.nasophon.de/download/gtklick-"
                                  version ".tar.gz"))
              (sha256
               (base32
                "0dq1km6njnzsqdqyf6wzir9g733z0mc9vmxfg2383k3c2a2di6bp"))))
    (build-system python-build-system)
    (arguments
     `(#:tests? #f ; no tests
       #:python ,python-2
       #:phases
       (modify-phases %standard-phases
         (add-before 'build 'add-sitedirs
           ;; .pth files are not automatically interpreted unless the
           ;; directories containing them are added as "sites".  The directories
           ;; are then added to those in the PYTHONPATH.  This is required for
           ;; the operation of pygtk.
           (lambda _
             (substitute* "gtklick/gtklick.py"
               (("import pygtk")
                "import pygtk, site, sys
for path in [path for path in sys.path if 'site-packages' in path]: site.addsitedir(path)"))))
         (add-after 'unpack 'inject-store-path-to-klick
           (lambda* (#:key inputs #:allow-other-keys)
             (substitute* "gtklick/klick_backend.py"
               (("KLICK_PATH = 'klick'")
                (string-append "KLICK_PATH = '"
                               (assoc-ref inputs "klick")
                               "/bin/klick'")))
             #t)))))
    (inputs
     `(("klick" ,klick)
       ("python2-pyliblo" ,python2-pyliblo)
       ("python2-pygtk" ,python2-pygtk)))
    (native-inputs
     `(("gettext" ,gnu-gettext)))
    (home-page "http://das.nasophon.de/gtklick/")
    (synopsis "Simple metronome with an easy-to-use graphical interface")
    (description
     "Gtklick is a simple metronome with an easy-to-use graphical user
interface.  It is implemented as a frontend to @code{klick}.")
    (license license:gpl2+)))

(define-public lilypond
  (package
    (name "lilypond")
    (version "2.19.33")
    (source (origin
              (method url-fetch)
              (uri (string-append
                    "http://download.linuxaudio.org/lilypond/sources/v"
                    (version-major+minor version) "/"
                    name "-" version ".tar.gz"))
              (sha256
               (base32
                "0s4vbbfy4xwq4da4kmlnndalmcyx2jaz7y8praah2146qbnr90xh"))))
    (build-system gnu-build-system)
    (arguments
     `(#:tests? #f ; out-test/collated-files.html fails
       #:out-of-source? #t
       #:make-flags '("conf=www") ;to generate images for info manuals
       #:configure-flags
       (list "CONFIGURATION=www"
             (string-append "--with-texgyre-dir="
                            (assoc-ref %build-inputs "font-tex-gyre")
                            "/share/fonts/opentype/"))
       #:phases
       (modify-phases %standard-phases
         (add-after 'unpack 'fix-path-references
          (lambda _
            (substitute* "scm/backend-library.scm"
              (("\\(search-executable '\\(\"gs\"\\)\\)")
               (string-append "\"" (which "gs") "\""))
              (("\"/bin/sh\"")
               (string-append "\"" (which "sh") "\"")))
            #t))
         (add-before 'configure 'prepare-configuration
          (lambda _
            (substitute* "configure"
              (("SHELL=/bin/sh") "SHELL=sh"))
            (setenv "out" "www")
            (setenv "conf" "www")
            #t))
         (add-after 'install 'install-info
           (lambda _
             (zero? (system* "make"
                             "-j" (number->string (parallel-job-count))
                             "conf=www" "install-info")))))))
    (inputs
     `(("guile" ,guile-1.8)
       ("font-dejavu" ,font-dejavu)
       ("font-tex-gyre" ,font-tex-gyre)
       ("fontconfig" ,fontconfig)
       ("freetype" ,freetype)
       ("ghostscript" ,ghostscript)
       ("pango" ,pango)
       ("python" ,python-2)))
    (native-inputs
     `(("bison" ,bison)
       ("perl" ,perl)
       ("flex" ,flex)
       ("fontforge" ,fontforge)
       ("dblatex" ,dblatex)
       ("gettext" ,gnu-gettext)
       ("imagemagick" ,imagemagick)
       ("netpbm" ,netpbm) ;for pngtopnm
       ("texlive" ,texlive) ;metafont and metapost
       ("texinfo" ,texinfo)
       ("texi2html" ,texi2html)
       ("rsync" ,rsync)
       ("pkg-config" ,pkg-config)
       ("zip" ,zip)))
    (home-page "http://www.lilypond.org/")
    (synopsis "Music typesetting")
    (description
     "GNU LilyPond is a music typesetter, which produces high-quality sheet
music.  Music is input in a text file containing control sequences which are
interpreted by LilyPond to produce the final document.  It is extendable with
Guile.")
    (license license:gpl3+)

    ;; On armhf and mips64el, building the documentation sometimes leads to
    ;; more than an hour of silence, so double the max silent time.
    (properties `((max-silent-time . 7200)))))

(define-public non-sequencer
  ;; The latest tagged release is three years old and uses a custom build
  ;; system, so we take the last commit affecting the "sequencer" directory.
  (let ((commit "1d9bd576"))
    (package
      (name "non-sequencer")
      (version (string-append "1.9.5-" commit))
      (source (origin
                (method git-fetch)
                (uri (git-reference
                      (url "git://git.tuxfamily.org/gitroot/non/non.git")
                      (commit commit)))
                (sha256
                 (base32
                  "0pkkw8q6d55j38xm7r4rwpdv1wy00a44h8c4wrn7vbgpq9nij46y"))
                (file-name (string-append name "-" version "-checkout"))))
      (build-system waf-build-system)
      (arguments
       `(#:tests? #f ;no "check" target
         #:configure-flags
         (list "--project=sequencer"
               ;; Disable the use of SSE unless on x86_64.
               ,@(if (not (string-prefix? "x86_64" (or (%current-target-system)
                                                       (%current-system))))
                     '("--disable-sse")
                     '()))
         #:phases
         (modify-phases %standard-phases
           (add-before
            'configure 'set-flags
            (lambda _
              ;; Compile with C++11, required by libsigc++.
              (setenv "CXXFLAGS" "-std=c++11")
              #t)))
         #:python ,python-2))
      (inputs
       `(("jack" ,jack-1)
         ("libsigc++" ,libsigc++)
         ("liblo" ,liblo)
         ("ntk" ,ntk)))
      (native-inputs
       `(("pkg-config" ,pkg-config)))
      (home-page "http://non.tuxfamily.org/wiki/Non%20Sequencer")
      (synopsis "Pattern-based MIDI sequencer")
      (description
       "The Non Sequencer is a powerful, lightweight, real-time,
pattern-based MIDI sequencer.  It utilizes the JACK Audio Connection Kit for
MIDI I/O and the NTK GUI toolkit for its user interface.  Everything in Non
Sequencer happens on-line, in real-time.  Music can be composed live, while the
transport is rolling.")
      (license license:gpl2+))))

(define-public solfege
  (package
    (name "solfege")
    (version "3.22.2")
    (source (origin
              (method url-fetch)
              (uri (string-append
                    "mirror://gnu/solfege/solfege-"
                    version ".tar.xz"))
              (sha256
               (base32
                "1w25rxdbj907nsx285k9nm480pvy12w3yknfh4n1dfv17cwy072i"))))
    (build-system gnu-build-system)
    (arguments
     `(#:tests? #f ; xmllint attempts to download DTD
       #:test-target "test"
       #:phases
       (alist-cons-after
        'unpack 'fix-configuration
        (lambda* (#:key inputs #:allow-other-keys)
          (substitute* "default.config"
            (("csound=csound")
             (string-append "csound="
                            (assoc-ref inputs "csound")
                            "/bin/csound"))
            (("/usr/bin/aplay")
             (string-append (assoc-ref inputs "aplay")
                            "/bin/aplay"))
            (("/usr/bin/timidity")
             (string-append (assoc-ref inputs "timidity")
                            "/bin/timidity"))
            (("/usr/bin/mpg123")
             (string-append (assoc-ref inputs "mpg123")
                            "/bin/mpg123"))
            (("/usr/bin/ogg123")
             (string-append (assoc-ref inputs "ogg123")
                            "/bin/ogg123"))))
        (alist-cons-before
         'build 'patch-python-shebangs
         (lambda _
           ;; Two python scripts begin with a Unicode BOM, so patch-shebang
           ;; has no effect.
           (substitute* '("solfege/parsetree.py"
                          "solfege/presetup.py")
             (("#!/usr/bin/python") (string-append "#!" (which "python")))))
         (alist-cons-before
          'build 'add-sitedirs
          ;; .pth files are not automatically interpreted unless the
          ;; directories containing them are added as "sites".  The directories
          ;; are then added to those in the PYTHONPATH.  This is required for
          ;; the operation of pygtk and pygobject.
          (lambda _
            (substitute* "run-solfege.py"
              (("import os")
               "import os, site
for path in [path for path in sys.path if 'site-packages' in path]: site.addsitedir(path)")))
          (alist-cons-before
           'build 'adjust-config-file-prefix
           (lambda* (#:key outputs #:allow-other-keys)
             (substitute* "run-solfege.py"
               (("prefix = os.path.*$")
                (string-append "prefix = " (assoc-ref outputs "out")))))
           (alist-cons-after
            'install 'wrap-program
            (lambda* (#:key inputs outputs #:allow-other-keys)
              ;; Make sure 'solfege' runs with the correct PYTHONPATH.  We
              ;; also need to modify GDK_PIXBUF_MODULE_FILE for SVG support.
              (let* ((out (assoc-ref outputs "out"))
                     (path (getenv "PYTHONPATH"))
                     (rsvg (assoc-ref inputs "librsvg"))
                     (pixbuf (find-files rsvg "^loaders\\.cache$")))
                (wrap-program (string-append out "/bin/solfege")
                  `("PYTHONPATH" ":" prefix (,path))
                  `("GDK_PIXBUF_MODULE_FILE" ":" prefix ,pixbuf))))
            %standard-phases)))))))
    (inputs
     `(("python" ,python-2)
       ("pygtk" ,python2-pygtk)
       ("gettext" ,gnu-gettext)
       ("gtk" ,gtk+)
       ("lilypond" ,lilypond)
       ("librsvg" ,librsvg) ; needed at runtime for icons
       ("libpng" ,libpng) ; needed at runtime for icons
       ;; players needed at runtime
       ("aplay" ,alsa-utils)
       ("csound" ,csound) ; optional, needed for some exercises
       ("mpg123" ,mpg123)
       ("ogg123" ,vorbis-tools)
       ("timidity" ,timidity++)))
    (native-inputs
     `(("pkg-config" ,pkg-config)
       ("txt2man" ,txt2man)
       ("libxml2" ,libxml2) ; for tests
       ("ghostscript" ,ghostscript)
       ("texinfo" ,texinfo)))
    (home-page "https://www.gnu.org/software/solfege/")
    (synopsis "Ear training")
    (description
     "GNU Solfege is a program for practicing musical ear-training.  With it,
you can practice your recognition of various musical intervals and chords.  It
features a statistics overview so you can monitor your progress across several
sessions.  Solfege is also designed to be extensible so you can easily write
your own lessons.")
    (license license:gpl3+)))

(define-public powertabeditor
  (package
    (name "powertabeditor")
    (version "2.0.0-alpha8")
    (source (origin
              (method url-fetch)
              (uri (string-append
                    "https://github.com/powertab/powertabeditor/archive/"
                    version ".tar.gz"))
              (file-name (string-append name "-" version ".tar.gz"))
              (sha256
               (base32
                "0gaa2x209v3azql8ak3r1n9a9qbxjx2ssirvwdxwklv2lmfqkm82"))
              (modules '((guix build utils)))
              (snippet
               '(begin
                  ;; Remove bundled sources for external libraries
                  (delete-file-recursively "external")
                  (substitute* "CMakeLists.txt"
                    (("include_directories\\(\\$\\{PROJECT_SOURCE_DIR\\}/external/.*") "")
                    (("add_subdirectory\\(external\\)") ""))
                  (substitute* "test/CMakeLists.txt"
                    (("include_directories\\(\\$\\{PROJECT_SOURCE_DIR\\}/external/.*") ""))

                  ;; Add install target
                  (substitute* "source/CMakeLists.txt"
                    (("qt5_use_modules")
                     (string-append
                      "install(TARGETS powertabeditor "
                      "RUNTIME DESTINATION ${CMAKE_INSTALL_PREFIX}/bin)\n"
                      "install(FILES data/tunings.json DESTINATION "
                      "${CMAKE_INSTALL_PREFIX}/share/powertabeditor/)\n"
                      "qt5_use_modules")))
                  #t))))
    (build-system cmake-build-system)
    (arguments
     `(#:modules ((guix build cmake-build-system)
                  (guix build utils)
                  (ice-9 match))
       #:configure-flags
       ;; CMake appears to lose the RUNPATH for some reason, so it has to be
       ;; explicitly set with CMAKE_INSTALL_RPATH.
       (list "-DCMAKE_BUILD_WITH_INSTALL_RPATH=TRUE"
             "-DCMAKE_ENABLE_PRECOMPILED_HEADERS=OFF" ; if ON pte_tests cannot be built
             (string-append "-DCMAKE_INSTALL_RPATH="
                            (string-join (map (match-lambda
                                                ((name . directory)
                                                 (string-append directory "/lib")))
                                              %build-inputs) ";")))
       #:phases
       (modify-phases %standard-phases
         (replace
          'check
          (lambda _
            (zero? (system* "bin/pte_tests"
                            ;; Exclude this failing test
                            "~Formats/PowerTabOldImport/Directions"))))
         (add-before
          'configure 'fix-tests
          (lambda _
            ;; Tests cannot be built with precompiled headers
            (substitute* "test/CMakeLists.txt"
              (("cotire\\(pte_tests\\)") ""))
            #t))
         (add-before
          'configure 'remove-third-party-libs
          (lambda* (#:key inputs #:allow-other-keys)
            ;; Link with required static libraries, because we're not
            ;; using the bundled version of withershins.
            (substitute* '("source/CMakeLists.txt"
                           "test/CMakeLists.txt")
              (("target_link_libraries\\((powertabeditor|pte_tests)" _ target)
               (string-append "target_link_libraries(" target " "
                              (assoc-ref inputs "binutils")
                              "/lib/libbfd.a "
                              (assoc-ref inputs "libiberty")
                              "/lib/libiberty.a "
                              "dl")))
            #t)))))
    (inputs
     `(("boost" ,boost)
       ("alsa-lib" ,alsa-lib)
       ("qt" ,qt)
       ("withershins" ,withershins)
       ("libiberty" ,libiberty) ;for withershins
       ("binutils" ,binutils) ;for -lbfd and -liberty (for withershins)
       ("timidity" ,timidity++)
       ("pugixml" ,pugixml)
       ("rtmidi" ,rtmidi)
       ("rapidjson" ,rapidjson)
       ("zlib" ,zlib)))
    (native-inputs
     `(("catch" ,catch-framework)
       ("pkg-config" ,pkg-config)))
    (home-page "http://powertabs.net")
    (synopsis "Guitar tablature editor")
    (description
     "Power Tab Editor 2.0 is the successor to the famous original Power Tab
Editor.  It is compatible with Power Tab Editor 1.7 and Guitar Pro.")
    (license license:gpl3+)))

(define-public setbfree
  (package
    (name "setbfree")
    (version "0.8.0")
    (source (origin
              (method url-fetch)
              (uri
               (string-append
                "https://github.com/pantherb/setBfree/releases/download/v"
                version "/setbfree-" version ".tar.gz"))
              (sha256
               (base32
                "045bgp7qsigpbrhk7qvgvliwiy26sajifwn7f2jvk90ckfqnlw4b"))))
    (build-system gnu-build-system)
    (arguments
     `(#:tests? #f ; no "check" target
       #:make-flags
       (list (string-append "PREFIX=" (assoc-ref %outputs "out"))
             (string-append "FONTFILE="
                            (assoc-ref %build-inputs "font-bitstream-vera")
                            "/share/fonts/truetype/VeraBd.ttf")
             ;; Disable unsupported optimization flags on non-x86
             ,@(let ((system (or (%current-target-system)
                                 (%current-system))))
                 (if (or (string-prefix? "x86_64" system)
                         (string-prefix? "i686" system))
                     '()
                     '("OPTIMIZATIONS=-ffast-math -fomit-frame-pointer -O3"))))
       #:phases
       (modify-phases %standard-phases
         (add-before 'build 'set-CC-variable
                     (lambda _ (setenv "CC" "gcc") #t))
         (delete 'configure))))
    (inputs
     `(("jack" ,jack-1)
       ("lv2" ,lv2)
       ("zita-convolver" ,zita-convolver)
       ("glu" ,glu)
       ("ftgl" ,ftgl)
       ("font-bitstream-vera" ,font-bitstream-vera)))
    (native-inputs
     `(("help2man" ,help2man)
       ("pkg-config" ,pkg-config)))
    (home-page "http://setbfree.org")
    (synopsis "Tonewheel organ")
    (description
     "setBfree is a MIDI-controlled, software synthesizer designed to imitate
the sound and properties of the electromechanical organs and sound
modification devices that brought world-wide fame to the names and products of
Laurens Hammond and Don Leslie.")
    (license license:gpl2+)))

(define-public bristol
  (package
    (name "bristol")
    (version "0.60.11")
    (source (origin
              (method url-fetch)
              (uri (string-append "mirror://sourceforge/bristol/bristol/"
                                  (version-major+minor version)
                                  "/bristol-" version ".tar.gz"))
              (sha256
               (base32
                "1fi2m4gmvxdi260821y09lxsimq82yv4k5bbgk3kyc3x1nyhn7vx"))))
    (build-system gnu-build-system)
    (arguments
     `(#:phases
       (modify-phases %standard-phases
         (add-after 'unpack 'remove-sse-flags
           (lambda* (#:key system #:allow-other-keys)
             (when (not (or (string-prefix? "x86_64" system)
                            (string-prefix? "i686" system)))
               (substitute* "bristol/Makefile.in"
                 (("-msse -mfpmath=sse") "")))
             #t)))))
    (inputs
     `(("alsa-lib" ,alsa-lib)
       ("jack" ,jack-1)
       ("liblo" ,liblo)
       ("libx11" ,libx11)))
    (native-inputs
     `(("pkg-config" ,pkg-config)))
    (home-page "http://bristol.sourceforge.net/")
    (synopsis "Synthesizer emulator")
    (description
     "Bristol is an emulation package for a number of different 'classic'
synthesizers including additive and subtractive and a few organs.  The
application consists of the engine, which is called bristol, and its own GUI
library called brighton that represents all the emulations.  There are
currently more than twenty different emulations; each does sound different
although the author maintains that the quality and accuracy of each emulation
is subjective.")
    (license license:gpl3+)))

(define-public tuxguitar
  (package
    (name "tuxguitar")
    (version "1.2")
    (source (origin
              (method url-fetch)
              (uri (string-append
                    "mirror://sourceforge/tuxguitar/TuxGuitar/TuxGuitar-"
                    version "/tuxguitar-src-" version ".tar.gz"))
              (sha256
               (base32
                "1g1yf2gd06fzdhqb8kb8dmdcmr602s9y24f01kyl4940wimgr944"))))
    (build-system gnu-build-system)
    (arguments
     `(#:make-flags (list (string-append "LDFLAGS=-Wl,-rpath="
                                         (assoc-ref %outputs "out") "/lib")
                          (string-append "PREFIX="
                                         (assoc-ref %outputs "out"))
                          (string-append "SWT_PATH="
                                         (assoc-ref %build-inputs "swt")
                                         "/share/java/swt.jar"))
       #:tests? #f ;no "check" target
       #:parallel-build? #f ;not supported
       #:phases
       (modify-phases %standard-phases
         (delete 'configure)
         (add-before 'build 'enter-dir-and-set-flags
          (lambda* (#:key inputs #:allow-other-keys)
            (chdir "TuxGuitar")
            (substitute* "GNUmakefile"
              (("GCJFLAGS\\+=(.*)" _ rest)
               (string-append "GCJFLAGS=-fsource=1.4 -fPIC " rest))
              (("PROPERTIES\\?=")
               (string-append "PROPERTIES?= -Dswt.library.path="
                              (assoc-ref inputs "swt") "/lib"))
              (("\\$\\(GCJ\\) -o") "$(GCJ) $(LDFLAGS) -o"))
            #t)))))
    (inputs
     `(("swt" ,swt)))
    (native-inputs
     `(("gcj" ,gcj)
       ("pkg-config" ,pkg-config)))
    (home-page "http://tuxguitar.com.ar")
    (synopsis "Multitrack tablature editor and player")
    (description
     "TuxGuitar is a guitar tablature editor with player support through midi.
It can display scores and multitrack tabs.  TuxGuitar provides various
additional features, including autoscrolling while playing, note duration
management, bend/slide/vibrato/hammer-on/pull-off effects, support for
tuplets, time signature management, tempo management, gp3/gp4/gp5 import and
export.")
    (license license:lgpl2.1+)))

(define-public pd
  (package
    (name "pd")
    (version "0.45.4")
    (source (origin
              (method url-fetch)
              (uri
               (string-append "mirror://sourceforge/pure-data/pure-data/"
                              version "/pd-" (version-major+minor version)
                              "-" (last (string-split version #\.))
                              ".src.tar.gz"))
              (sha256
               (base32
                "1ls2ap5yi2zxvmr247621g4jx0hhfds4j5704a050bn2n3l0va2p"))))
    (build-system gnu-build-system)
    (arguments
     `(#:tests? #f ; no "check" target
       #:phases
       (modify-phases %standard-phases
         (add-before
          'configure 'fix-wish-path
          (lambda _
            (substitute* "src/s_inter.c"
              (("  wish ") (string-append "  " (which "wish8.6") " ")))
            (substitute* "tcl/pd-gui.tcl"
              (("exec wish ") (string-append "exec " (which "wish8.6") " ")))
            #t))
         (add-after
          'unpack 'autoconf
          (lambda _ (zero? (system* "autoreconf" "-vfi")))))))
    (native-inputs
     `(("autoconf" ,autoconf)
       ("automake" ,automake)
       ("libtool" ,libtool)
       ("gettext" ,gnu-gettext)
       ("pkg-config" ,pkg-config)))
    (inputs
     `(("tk" ,tk)
       ("alsa-lib" ,alsa-lib)
       ("jack" ,jack-1)))
    (home-page "http://puredata.info")
    (synopsis "Visual programming language for artistic performances")
    (description
     "Pure Data (aka Pd) is a visual programming language.  Pd enables
musicians, visual artists, performers, researchers, and developers to create
software graphically, without writing lines of code.  Pd is used to process
and generate sound, video, 2D/3D graphics, and interface sensors, input
devices, and MIDI.  Pd can easily work over local and remote networks to
integrate wearable technology, motor systems, lighting rigs, and other
equipment.  Pd is suitable for learning basic multimedia processing and visual
programming methods as well as for realizing complex systems for large-scale
projects.")
    (license license:bsd-3)))

(define-public frescobaldi
  (package
    (name "frescobaldi")
    (version "2.18.1")
    (source (origin
              (method url-fetch)
              (uri (string-append
                    "https://github.com/wbsoft/frescobaldi/releases/download/v"
                    version "/frescobaldi-" version ".tar.gz"))
              (sha256
               (base32
                "1hflc6gck6dn17czc2ldai5j0ynfg3df8lqcggdry06qxsdbnns7"))))
    (build-system python-build-system)
    (inputs
     `(("lilypond" ,lilypond)
       ("python-pyqt-4" ,python-pyqt-4)
       ("python-ly" ,python-ly)
       ("poppler" ,poppler)
       ("python-poppler-qt4" ,python-poppler-qt4)
       ("python-sip" ,python-sip)))
    (home-page "http://www.frescobaldi.org/")
    (synopsis "LilyPond sheet music text editor")
    (description
     "Frescobaldi is a LilyPond sheet music text editor with syntax
highlighting and automatic completion.  Among other things, it can render
scores next to the source, can capture input from MIDI or read MusicXML and
ABC files, has a MIDI player for proof-listening, and includes a documentation
browser.")
    (license license:gpl2+)))

(define-public drumstick
  (package
    (name "drumstick")
    (version "1.0.2")
    (source (origin
              (method url-fetch)
              (uri (string-append "mirror://sourceforge/drumstick/"
                                  version "/drumstick-" version ".tar.bz2"))
              (sha256
               (base32
                "0l47gy9yywrc860db5g3wdqg8yc8qdb2lqq6wvw1dfim5j0vbail"))))
    (build-system cmake-build-system)
    (arguments
     `(#:tests? #f  ; no test target
       #:configure-flags '("-DLIB_SUFFIX=")
       #:phases
       (modify-phases %standard-phases
         (add-before 'configure 'fix-docbook
           (lambda* (#:key inputs #:allow-other-keys)
             (substitute* "cmake_admin/CreateManpages.cmake"
               (("http://docbook.sourceforge.net/release/xsl/current/manpages/docbook.xsl")
                (string-append (assoc-ref inputs "docbook-xsl")
                               "/xml/xsl/docbook-xsl-"
                               ,(package-version docbook-xsl)
                               "/manpages/docbook.xsl")))
             #t)))))
    (inputs
     `(("qt" ,qt)
       ("alsa-lib" ,alsa-lib)
       ("fluidsynth" ,fluidsynth)))
    (native-inputs
     `(("pkg-config" ,pkg-config)
       ("libxslt" ,libxslt) ;for xsltproc
       ("docbook-xsl" ,docbook-xsl)
       ("doxygen" ,doxygen)))
    (home-page "http://drumstick.sourceforge.net/")
    (synopsis "C++ MIDI library")
    (description
     "Drumstick is a set of MIDI libraries using C++/Qt5 idioms and style.  It
includes a C++ wrapper around the ALSA library sequencer interface.  A
complementary library provides classes for processing SMF (Standard MIDI
files: .MID/.KAR), Cakewalk (.WRK), and Overture (.OVE) file formats.  A
multiplatform realtime MIDI I/O library is also provided with various output
backends, including ALSA, OSS, Network and FluidSynth.")
    (license license:gpl2+)))

(define-public vmpk
  (package
    (name "vmpk")
    (version "0.6.2a")
    (source (origin
              (method url-fetch)
              (uri (string-append "mirror://sourceforge/vmpk/vmpk/"
                                  (string-drop-right version 1)
                                  "/vmpk-" version ".tar.bz2"))
              (sha256
               (base32
                "0259iikvxnfdiifrh02g8xgcxikrkca4nhd3an8xzx0bd6bk8ifi"))))
    (build-system cmake-build-system)
    (arguments
     `(#:tests? #f  ; no test target
       #:phases
       (modify-phases %standard-phases
         (add-before 'configure 'fix-docbook
           (lambda* (#:key inputs #:allow-other-keys)
             (substitute* "cmake_admin/CreateManpages.cmake"
               (("http://docbook.sourceforge.net/release/xsl/current/manpages/docbook.xsl")
                (string-append (assoc-ref inputs "docbook-xsl")
                               "/xml/xsl/docbook-xsl-"
                               ,(package-version docbook-xsl)
                               "/manpages/docbook.xsl")))
             #t)))))
    (inputs
     `(("drumstick" ,drumstick)
       ("qt" ,qt)))
    (native-inputs
     `(("libxslt" ,libxslt) ;for xsltproc
       ("docbook-xsl" ,docbook-xsl)
       ("pkg-config" ,pkg-config)))
    (home-page "http://vmpk.sourceforge.net")
    (synopsis "Virtual MIDI piano keyboard")
    (description
     "Virtual MIDI Piano Keyboard is a MIDI events generator and receiver.  It
doesn't produce any sound by itself, but can be used to drive a MIDI
synthesizer (either hardware or software, internal or external).  You can use
the computer's keyboard to play MIDI notes, and also the mouse.  You can use
the Virtual MIDI Piano Keyboard to display the played MIDI notes from another
instrument or MIDI file player.")
    (license license:gpl3+)))

(define-public zynaddsubfx
  (package
    (name "zynaddsubfx")
    (version "2.5.3")
    (source (origin
              (method url-fetch)
              (uri (string-append
                    "mirror://sourceforge/zynaddsubfx/zynaddsubfx/"
                    version "/zynaddsubfx-" version ".tar.bz2"))
              (sha256
               (base32
                "04da54p19p7f5wm6vm7abbjbsil1qf7n5f4adj01jm6b0wqigvgb"))))
    (build-system cmake-build-system)
    (arguments
     `(#:phases
       (modify-phases %standard-phases
         ;; Move SSE compiler optimization flags from generic target to
         ;; athlon64 and core2 targets, because otherwise the build would fail
         ;; on non-Intel machines.
         (add-after 'unpack 'remove-sse-flags-from-generic-target
          (lambda _
            (substitute* "src/CMakeLists.txt"
              (("-msse -msse2 -mfpmath=sse") "")
              (("-march=(athlon64|core2)" flag)
               (string-append flag " -msse -msse2 -mfpmath=sse")))
            #t)))))
    (inputs
     `(("liblo" ,liblo)
       ("ntk" ,ntk)
       ("alsa-lib" ,alsa-lib)
       ("jack" ,jack-1)
       ("fftw" ,fftw)
       ("minixml" ,minixml)
       ("libxpm" ,libxpm)
       ("zlib" ,zlib)))
    (native-inputs
     `(("pkg-config" ,pkg-config)))
    (home-page "http://zynaddsubfx.sf.net/")
    (synopsis "Software synthesizer")
    (description
     "ZynAddSubFX is a feature heavy realtime software synthesizer.  It offers
three synthesizer engines, multitimbral and polyphonic synths, microtonal
capabilities, custom envelopes, effects, etc.")
    (license license:gpl2)))

(define-public yoshimi
  (package
    (name "yoshimi")
    (version "1.3.8.2")
    (source (origin
              (method url-fetch)
              (uri (string-append "mirror://sourceforge/yoshimi/"
                                  (version-major+minor version)
                                  "/yoshimi-" version ".tar.bz2"))
              (sha256
               (base32
                "0wl4ln6v1nkkx56kfah23chyrhga2vi93i82g0s200c4s4184xr8"))))
    (build-system cmake-build-system)
    (arguments
     `(#:tests? #f ; there are no tests
       #:configure-flags
       (list (string-append "-DCMAKE_INSTALL_DATAROOTDIR="
                            (assoc-ref %outputs "out") "/share"))
       #:phases
       (modify-phases %standard-phases
         (add-before 'configure 'enter-dir
           (lambda _ (chdir "src") #t))
         ;; Move SSE compiler optimization flags from generic target to
         ;; athlon64 and core2 targets, because otherwise the build would fail
         ;; on non-Intel machines.
         (add-after 'unpack 'remove-sse-flags-from-generic-target
          (lambda _
            (substitute* "src/CMakeLists.txt"
              (("-msse -msse2 -mfpmath=sse") "")
              (("-march=(athlon64|core2)" flag)
               (string-append flag " -msse -msse2 -mfpmath=sse")))
            #t)))))
    (inputs
     `(("boost" ,boost)
       ("fftwf" ,fftwf)
       ("alsa-lib" ,alsa-lib)
       ("jack" ,jack-1)
       ("fontconfig" ,fontconfig)
       ("minixml" ,minixml)
       ("mesa" ,mesa)
       ("fltk" ,fltk)
       ("lv2" ,lv2)
       ("readline" ,readline)
       ("ncurses" ,ncurses)
       ("cairo" ,cairo)
       ("zlib" ,zlib)))
    (native-inputs
     `(("pkg-config" ,pkg-config)))
    (home-page "http://yoshimi.sourceforge.net/")
    (synopsis "Multi-paradigm software synthesizer")
    (description
     "Yoshimi is a fork of ZynAddSubFX, a feature heavy realtime software
synthesizer.  It offers three synthesizer engines, multitimbral and polyphonic
synths, microtonal capabilities, custom envelopes, effects, etc.  Yoshimi
improves on support for JACK features, such as JACK MIDI.")
    (license license:gpl2)))

(define-public cursynth
  (package
    (name "cursynth")
    (version "1.5")
    (source
     (origin
      (method url-fetch)
      (uri (string-append "mirror://gnu/cursynth/cursynth-"
                          version ".tar.gz"))
      (sha256
       (base32 "1dhphsya41rv8z6yqcv9l6fwbslsds4zh1y56zizi39nd996d40v"))
      (patches (list (search-patch "cursynth-wave-rand.patch")))))
    (build-system gnu-build-system)
    (native-inputs `(("pkg-config" ,pkg-config)))
    ;; TODO: See https://github.com/iyoko/cursynth/issues/4 which currently
    ;; prevents us from using pulseaudio
    (inputs `(("ncurses" ,ncurses)
              ("alsa" ,alsa-lib)))
    (home-page "http://www.gnu.org/software/cursynth")
    (synopsis "Polyphonic and MIDI subtractive music synthesizer using curses")
    (description "GNU cursynth is a polyphonic synthesizer that runs
graphically in the terminal.  It is built on a full-featured subtractive
synthesis engine.  Notes and parameter changes may be entered via MIDI or the
computer's keyboard.")
    (license license:gpl3+)))

(define-public qtractor
  (package
    (name "qtractor")
    (version "0.7.3")
    (source (origin
              (method url-fetch)
              (uri (string-append "http://downloads.sourceforge.net/qtractor/"
                                  "qtractor-" version ".tar.gz"))
              (sha256
               (base32
                "1vy4297myyqk0k58nzybgvgklckhngpdcnmp98k0rq98dirclbl7"))))
    (build-system gnu-build-system)
    (arguments `(#:tests? #f)) ; no "check" target
    (inputs
     `(("qt" ,qt)
       ("alsa-lib" ,alsa-lib)
       ("jack" ,jack-1)
       ("libsndfile" ,libsndfile)
       ("ladspa" ,ladspa)
       ("lv2" ,lv2)
       ("lilv" ,lilv)
       ("suil" ,suil)
       ("libsamplerate" ,libsamplerate)
       ("libvorbis" ,libvorbis)
       ("libmad" ,libmad)
       ("rubberband" ,rubberband)
       ("liblo" ,liblo)
       ("zlib" ,zlib)))
    (native-inputs
     `(("pkg-config" ,pkg-config)))
    (home-page "http://qtractor.sourceforge.net/")
    (synopsis "Audio/MIDI multi-track sequencer")
    (description
     "Qtractor is an Audio/MIDI multi-track sequencer application.  It uses
JACK for audio and ALSA sequencer for MIDI as multimedia infrastructures and
follows a traditional multi-track tape recorder control paradigm.")
    (license license:gpl2+)))

(define-public pianobar
  (package
    (name "pianobar")
    (version "2015.11.22")
    (source (origin
              (method url-fetch)
              (uri (string-append "https://github.com/PromyLOPh/"
                                  name "/archive/" version ".tar.gz"))
              (file-name (string-append name "-" version ".tar.gz"))
              (sha256
               (base32
                "022df19bhxqvkhy0qy21xahba5s1fm17b13y0p9p9dnf2yl44wfv"))))
    (build-system gnu-build-system)
    (arguments
     `(#:tests? #f ; no tests
       #:make-flags (list "CC=gcc" "CFLAGS=-std=c99"
                          (string-append "PREFIX=" %output))
       #:phases (modify-phases %standard-phases
                  (delete 'configure))))
    (inputs
     `(("ao" ,ao)
       ("curl" ,curl)
       ("libgcrypt" ,libgcrypt)
       ("json-c" ,json-c)
       ("ffmpeg" ,ffmpeg)))
    (native-inputs
     `(("pkg-config" ,pkg-config)))
    (home-page "http://6xq.net/projects/pianobar/")
    (synopsis "Console-based pandora.com player")
    (description "pianobar is a console-based music player for the
personalized online radio pandora.com.  It has configurable keys for playing
and managing stations, can be controlled remotely via fifo, and can run
event-based scripts for scrobbling, notifications, etc.")
    (license license:expat)))

(define-public python-mutagen
  (package
    (name "python-mutagen")
    (version "1.31")
    (source (origin
              (method url-fetch)
              (uri (pypi-uri "mutagen" version))
              (sha256
               (base32
                "16fnnhspniac2i7qswxafawsh2x2a803hmc6bn9k1zl5fxq1380a"))))
    (build-system python-build-system)
    (home-page "https://bitbucket.org/lazka/mutagen")
    (synopsis "Read and write audio tags.")
    (description "Mutagen is a Python module to handle audio metadata.  It
supports ASF, FLAC, M4A, Monkey’s Audio, MP3, Musepack, Ogg FLAC, Ogg Speex, Ogg
Theora, Ogg Vorbis, True Audio, WavPack and OptimFROG audio files.  All versions
of ID3v2 are supported, and all standard ID3v2.4 frames are parsed.  It can read
Xing headers to accurately calculate the bitrate and length of MP3s.  ID3 and
APEv2 tags can be edited regardless of audio format.  It can also manipulate Ogg
streams on an individual packet/page level.")
    (license license:gpl2))) ; "later version" never mentioned

(define-public python2-mutagen
  (package-with-python2 python-mutagen))

(define-public python-musicbrainzngs
  (package
    (name "python-musicbrainzngs")
    (version "0.5")
    (source (origin
              (method url-fetch)
              (uri (pypi-uri "musicbrainzngs" version))
              (sha256
               (base32
                "12f48llmdf5rkiqxcb70k2k1dmhm8byq0ifazvlrca8dfnmqh4r8"))))
    (build-system python-build-system)
    (home-page "https://python-musicbrainzngs.readthedocs.org/")
    (synopsis "Python bindings for MusicBrainz NGS webservice")
    (description "Musicbrainzngs implements Python bindings of the MusicBrainz
web service.  This library can be used to retrieve music metadata from the
MusicBrainz database.")
    ;; 'musicbrainzngs/compat.py' is ISC licensed.
    (license (list license:bsd-2 license:isc))))

(define-public python2-musicbrainzngs
  (package-with-python2 python-musicbrainzngs))

(define-public python-pyechonest
  (package
    (name "python-pyechonest")
    (version "9.0.0")
    (source (origin
              (method url-fetch)
              (uri (pypi-uri "pyechonest" version))
              (sha256
               (base32
                "1584nira3rkiman9dm81kdshihmkj21s8navndz2l8spnjwb790x"))))
    (build-system python-build-system)
    (home-page "https://github.com/echonest/pyechonest")
    (synopsis "Python interface to The Echo Nest APIs.")
    (description "Pyechonest is an open source Python library for the Echo Nest
API. With Pyechonest you have Python access to the entire set of API methods
including:

@enumerate
@item artist - search for artists by name, description, or attribute, and get
back detailed information about any artist including audio, similar artists,
blogs, familiarity, hotttnesss, news, reviews, urls and video.
@item song - search songs by artist, title, description, or attribute (tempo,
duration, etc) and get detailed information back about each song, such as
hotttnesss, audio_summary, or tracks.
@item track - upload a track to the Echo Nest and receive summary information
about the track including key, duration, mode, tempo, time signature along with
detailed track info including timbre, pitch, rhythm and loudness information.
@end enumerate\n")
    (license license:bsd-3)
    (properties `((python2-variant . ,(delay python2-pyechonest))))))

(define-public python2-pyechonest
  (package (inherit (package-with-python2
                     (strip-python2-variant python-pyechonest)))
    (native-inputs `(("python2-setuptools" ,python2-setuptools)))))

(define-public python-pylast
  (package
    (name "python-pylast")
    (version "1.5.1")
    (source (origin
              (method url-fetch)
              (uri (pypi-uri "pylast" version))
              (sha256
               (base32
                "10znd9xr1vs2ix519jkz3ccm90zciaddcdr2w2wrrh2jyy3bc59a"))))
    (build-system python-build-system)
    (native-inputs
     `(("python-coverage" ,python-coverage)
       ("python-mock" ,python-mock)
       ("python-pep8" ,python-pep8)
       ("python-pytest" ,python-pytest)
       ("python-pyflakes" ,python-pyflakes)
       ("python-pyyaml" ,python-pyyaml)))
    (propagated-inputs
     `(("python-six" ,python-six)))
    (home-page "https://github.com/pylast/pylast")
    (synopsis "A Python interface to Last.fm and Libre.fm")
    (description "A Python interface to Last.fm and other API-compatible
websites such as Libre.fm.")
    (license license:asl2.0)
    (properties `((python2-variant . ,(delay python2-pylast))))))

(define-public python2-pylast
  (let ((pylast (package-with-python2
                 (strip-python2-variant python-pylast))))
    (package (inherit pylast)
      (native-inputs
       `(("python2-setuptools" ,python2-setuptools)
         ,@(package-native-inputs pylast))))))

(define-public beets
  (package
    (name "beets")
    (version "1.3.17")
    (source (origin
              (method url-fetch)
              (uri (pypi-uri name version))
              (sha256
               (base32
                "0yg7sp18sdpszkinhb0bi6yinbn316jy1baxrwiw0m4byrj3rr6c"))))
    (build-system python-build-system)
    (arguments
     `(#:python ,python-2 ; only Python 2 is supported
       #:phases
       (modify-phases %standard-phases
         (add-after 'unpack 'set-HOME
           (lambda _ (setenv "HOME" (string-append (getcwd) "/tmp")))))))
    (native-inputs
     `(("python2-beautifulsoup4" ,python2-beautifulsoup4)
       ("python2-flask" ,python2-flask)
       ("python2-setuptools" ,python2-setuptools)
       ("python2-mock" ,python2-mock)
       ("python2-mpd2" ,python2-mpd2)
       ("python2-pathlib" ,python2-pathlib)
       ("python2-pyxdg" ,python2-pyxdg)
       ("python2-pyechonest" ,python2-pyechonest)
       ("python2-pylast" ,python2-pylast)
       ("python2-rarfile" ,python2-rarfile)
       ("python2-responses" ,python2-responses)))
    ;; TODO: Install optional plugins and dependencies.
    (propagated-inputs
     `(("python2-enum34" ,python2-enum34)
       ("python2-jellyfish" ,python2-jellyfish)
       ("python2-munkres" ,python2-munkres)
       ("python2-musicbrainzngs" ,python2-musicbrainzngs)
       ("python2-mutagen" ,python2-mutagen)
       ("python2-pyyaml" ,python2-pyyaml)
       ("python2-unidecode" ,python2-unidecode)))
    (home-page "http://beets.io")
    (synopsis "Music organizer")
    (description "The purpose of beets is to get your music collection right
once and for all. It catalogs your collection, automatically improving its
metadata as it goes using the MusicBrainz database. Then it provides a variety
of tools for manipulating and accessing your music.")
    (license license:expat)))