gnu: Add shotcut.

* gnu/packages/video.scm (shotcut): New variable.

Signed-off-by: Efraim Flashner <efraim@flashner.co.il>

gnu/packages/video.scm

@@ -86,6 +86,7 @@ (define-module (gnu packages video)
   #:use-module (guix build-system meson)
   #:use-module (guix build-system perl)
   #:use-module (guix build-system python)
+  #:use-module (guix build-system qt)
   #:use-module (guix build-system waf)
   #:use-module (guix build-system trivial)
   #:use-module (gnu packages)
@@ -4607,6 +4608,82 @@ (define-public openshot
 transitions, and effects and then export your film to many common formats.")
     (license license:gpl3+)))
 
+(define-public shotcut
+  (package
+    (name "shotcut")
+    (version "21.03.21")
+    (source
+     (origin
+       (method git-fetch)
+       (uri (git-reference
+             (url "https://github.com/mltframework/shotcut")
+             (commit (string-append "v" version))))
+       (file-name (git-file-name name version))
+       (sha256
+        (base32 "0jb488vynn0vmq22z51bg4hb4617732nva9rg52lzl89v5n8gmsi"))))
+    (build-system qt-build-system)
+    (arguments
+     `(#:tests? #f ;there are no tests
+       #:phases
+       (modify-phases %standard-phases
+         (replace 'configure
+           (lambda* (#:key outputs #:allow-other-keys)
+             (let* ((out (assoc-ref outputs "out")))
+               (invoke "qmake"
+                       (string-append "PREFIX=" out)
+                       "QMAKE_LRELEASE=lrelease"
+                       "QMAKE_LUPDATE=lupdate"
+                       "shotcut.pro"))))
+         (add-after 'install 'wrap-executable
+           (lambda* (#:key inputs outputs #:allow-other-keys)
+             (let* ((out (assoc-ref outputs "out"))
+                    (frei0r (assoc-ref inputs "frei0r-plugins"))
+                    (ffmpeg (assoc-ref inputs "ffmpeg"))
+                    (jack (assoc-ref inputs "jack"))
+                    (sdl2 (assoc-ref inputs "sdl2")))
+               (wrap-program (string-append out "/bin/shotcut")
+                 `("PATH" ":" prefix
+                   ,(list (string-append ffmpeg "/bin")))
+                 `("LD_LIBRARY_PATH" ":" prefix
+                   ,(list (string-append jack "/lib" ":" sdl2 "/lib")))
+                 `("FREI0R_PATH" ":" =
+                   (,(string-append frei0r "/lib/frei0r-1/")))
+                 `("MLT_PREFIX" ":" =
+                   (,(assoc-ref inputs "mlt")))))
+             #t)))))
+    (native-inputs
+     `(("pkg-config" ,pkg-config)
+       ("python" ,python-wrapper)
+       ("qttools" ,qttools)))
+    (inputs
+     `(("ffmpeg" ,ffmpeg)
+       ("frei0r-plugins" ,frei0r-plugins)
+       ("jack" ,jack-1)
+       ("ladspa" ,ladspa)
+       ("lame" ,lame)
+       ("libvpx" ,libvpx)
+       ("libx264" ,libx264)
+       ("mlt" ,mlt)
+       ("pulseaudio" ,pulseaudio)
+       ("qtbase" ,qtbase-5)
+       ("qtdeclarative" ,qtdeclarative)
+       ("qtgraphicaleffects" ,qtgraphicaleffects)
+       ("qtmultimedia" ,qtmultimedia)
+       ("qtquickcontrols" ,qtquickcontrols)
+       ("qtquickcontrols2" ,qtquickcontrols2)
+       ("qtsvg" ,qtsvg)
+       ("qtwebkit" ,qtwebkit)
+       ("qtwebsockets" ,qtwebsockets)
+       ("qtx11extras" ,qtx11extras)
+       ("sdl2" ,sdl2)))
+    (home-page "https://www.shotcut.org/")
+    (synopsis "Video editor built on the MLT framework")
+    (description
+     "Shotcut is a video editor built on the MLT framework.  Features include
+a wide range of formats through @code{ffmpeg}, 4k resolution support, webcam
+and audio capture, network stream playback, and many more.")
+    (license license:gpl3+)))
+
 (define-public dav1d
   (package
     (name "dav1d")