renoise: Add desktop item (#115606)

Co-authored-by: Sandro <sandro.jaeckel@gmail.com>

pkgs/applications/audio/renoise/default.nix

@@ -28,7 +28,7 @@ stdenv.mkDerivation rec {
         }
         else
           releasePath
-    else throw "Platform is not supported by Renoise";
+    else throw "Platform is not supported. Use instalation native to your platform https://www.renoise.com/";
 
   buildInputs = [ alsaLib libjack2 libX11 libXcursor libXext libXrandr ];
 
@@ -47,6 +47,14 @@ stdenv.mkDerivation rec {
 
     mkdir $out/bin
     ln -s $out/renoise $out/bin/renoise
+
+    # Desktop item
+    mkdir -p $out/share/applications
+    cp -r Installer/renoise.desktop $out/share/applications/renoise.desktop
+
+    # Desktop item icons
+    mkdir -p $out/share/icons/hicolor/{48x48,64x64,128x128}/apps
+    cp Installer/renoise-{48,64,128}.png $out/share/icons/hicolor/{48x48,64x64,128x128}/apps/renoise.png
   '';
 
   postFixup = ''
@@ -61,6 +69,9 @@ stdenv.mkDerivation rec {
         --set-rpath $out/lib \
         $path
     done
+
+    substituteInPlace $out/share/applications/renoise.desktop \
+      --replace Exec=renoise Exec=$out/bin/renoise
   '';
 
   meta = {