First implementation for hermes

overlays/openrgb/default.nix

@@ -0,0 +1,20 @@
+final: prev: {
+  openrgb = prev.openrgb.overrideAttrs (old: {
+    src = final.fetchFromGitLab {
+      owner = "CalcProgrammer1";
+      repo = "OpenRGB";
+      rev = "release_candidate_1.0rc2";
+      sha256 = "vdIA9i1ewcrfX5U7FkcRR+ISdH5uRi9fz9YU5IkPKJQ=";
+    };
+    patches = [
+      ./remove_systemd_service.patch
+    ];
+    postPatch = ''
+      patchShebangs scripts/build-udev-rules.sh
+      substituteInPlace scripts/build-udev-rules.sh \
+       --replace-fail /usr/bin/env "${final.coreutils}/bin/env"
+    '';
+
+    version = "1.0rc2";
+  });
+}

overlays/openrgb/remove_systemd_service.patch

@@ -0,0 +1,17 @@
+diff --git a/OpenRGB.pro b/OpenRGB.pro
+index df7082b6..0022e5fa 100644
+--- a/OpenRGB.pro
++++ b/OpenRGB.pro
+@@ -588,9 +588,9 @@ contains(QMAKE_PLATFORM, linux) {
+     icon.files+=qt/org.openrgb.OpenRGB.png
+     metainfo.path=$$PREFIX/share/metainfo/
+     metainfo.files+=qt/org.openrgb.OpenRGB.metainfo.xml
+-    systemd_service.path=/etc/systemd/system
+-    systemd_service.files+=qt/openrgb.service
+-    INSTALLS += target desktop icon metainfo udev_rules systemd_service
++    # systemd_service.path=/etc/systemd/system
++    # systemd_service.files+=qt/openrgb.service
++    INSTALLS += target desktop icon metainfo udev_rules # systemd_service
+ }
+ 
+ #-----------------------------------------------------------------------------------------------#