Add patchmatrix

pkgs/default.nix

@@ -27,6 +27,8 @@ self: super:
 
   vim-samae = super.callPackage ./vim {};
 
+  patchmatrix-samae = super.callPackage ./patchmatrix {};
+
   reaper-samae = super.callPackage ./reaper {};
 
   mopidy-mpd-samae = super.callPackage ./mopidy-mpd {};

pkgs/patchmatrix/default.nix

@@ -0,0 +1,48 @@
+{ lib
+, stdenv
+, fetchFromGitHub
+, meson
+, ninja
+, pkg-config
+, glew
+, libjack2
+, lv2
+, libX11
+, libXext
+}:
+
+stdenv.mkDerivation rec {
+  pname = "patchmatrix";
+  version = "0.22.0";
+
+  src = fetchFromGitHub {
+    owner = "OpenMusicKontrollers";
+    repo = pname;
+    rev = version;
+    sha256 = "1hkbnrg518gmjd8xbsdd0bjp0qxvaq4d0svj3chmvpgdwsn53glr";
+  };
+
+  nativeBuildInputs = [
+    meson ninja pkg-config
+  ];
+
+  buildInputs = [
+    glew libjack2 lv2 libX11 libXext
+  ];
+
+  meta = with lib; {
+    homepage = "https://github.com/OpenMusicKontrollers/patchmatrix";
+    description = "A JACK patchbay in a flow matrix style";
+    longDescription = ''
+      A simple graphical JACK patchbay that tries to unite the best of both
+      worlds:
+      - Fast patching and uncluttered port representation of a matrix patchbay
+      - Excellent representation of signal flow of a flow canvas patchbay
+      It additionally features tightly embedded graphical mixer clients
+      automatable with JACK MIDI/OSC.
+    '';
+    license = licenses.artistic2;
+    maintainers = [ maintainers.jpotier ];
+    platforms = platforms.linux;
+  };
+}