spectral: init at 2018-09-24

* needs at least qtgraphicaleffects not mentioned in docs
* doesn't want to use our libqmatrixclient, so let it use bundled
* took a few runs (or perhaps just patience with one) to populate,
  when my profile icon appeared it seemed ready-- then click it
  to see list of rooms and such.

pkgs/applications/networking/instant-messengers/spectral/default.nix

@@ -0,0 +1,33 @@
+{ stdenv, fetchgit
+, pkgconfig
+, qmake, qtbase, qtquickcontrols2, qtmultimedia
+, libpulseaudio
+# Not mentioned but seems needed
+, qtgraphicaleffects
+# Unsure but needed by similar
+, qtdeclarative, qtsvg
+}:
+
+stdenv.mkDerivation rec {
+  name = "spectral-${version}";
+  version = "2018-09-24";
+
+  src = fetchgit {
+    url = "https://gitlab.com/b0/spectral.git";
+    rev = "c9d1d6887722860a52b597a0f74d0ce39c8622e1";
+    sha256 = "1ym8jlqls4lcq5rd81vxw1dni79fc6ph00ip8nsydl6i16fngl4c";
+    fetchSubmodules = true;
+  };
+
+  nativeBuildInputs = [ pkgconfig qmake ];
+  buildInputs = [ qtbase qtquickcontrols2 qtmultimedia qtgraphicaleffects qtdeclarative qtsvg ]
+    ++ stdenv.lib.optional stdenv.hostPlatform.isLinux libpulseaudio;
+
+  meta = with stdenv.lib; {
+    description = "A glossy client for Matrix, written in QtQuick Controls 2 and C++";
+    homepage = https://gitlab.com/b0/spectral;
+    license = licenses.gpl3;
+    platforms = with platforms; linux ++ darwin;
+    maintainers = with maintainers; [ dtzWill ];
+  };
+}

pkgs/top-level/all-packages.nix

@@ -16989,6 +16989,8 @@ with pkgs;
 
   spectrwm = callPackage ../applications/window-managers/spectrwm { };
 
+  spectral = qt5.callPackage ../applications/networking/instant-messengers/spectral { };
+
   super-productivity = callPackage ../applications/networking/super-productivity { };
 
   wlc = callPackage ../development/libraries/wlc { };