uboot: (firmwareOdroidC2/C4) don't invoke patch tool, use patches = [] instead

https://github.com/NixOS/nixpkgs/blob/master/pkgs/stdenv/generic/setup.sh#L948
this can do it nicely.

Signed-off-by: Anton Arapov <anton@deadbeef.mx>

pkgs/applications/audio/plexamp/default.nix

@@ -0,0 +1,41 @@
+{ lib, fetchurl, appimageTools, pkgs }:
+
+let
+  pname = "plexamp";
+  version = "4.2.1";
+
+  src = fetchurl {
+    url = "https://plexamp.plex.tv/plexamp.plex.tv/desktop/Plexamp-${version}.AppImage";
+    name="${pname}-${version}.AppImage";
+    sha512 = "S2/T+T24X6D0oTbGPMp2BVfWTvzsUCWS1xsigLT/vFr12PlZgPfOWgo987W3YE30WJJDdybLqnkTl+uhNndC+A==";
+  };
+
+  appimageContents = appimageTools.extractType2 {
+    inherit pname version src;
+  };
+in appimageTools.wrapType2 {
+  inherit pname version src;
+
+  multiPkgs = null; # no 32bit needed
+  extraPkgs = pkgs: appimageTools.defaultFhsEnvArgs.multiPkgs pkgs ++ [ pkgs.bash ];
+
+  extraInstallCommands = ''
+    ln -s $out/bin/${pname}-${version} $out/bin/${pname}
+    install -m 444 -D ${appimageContents}/plexamp.desktop $out/share/applications/plexamp.desktop
+    install -m 444 -D ${appimageContents}/plexamp.png \
+      $out/share/icons/hicolor/512x512/apps/plexamp.png
+    substituteInPlace $out/share/applications/${pname}.desktop \
+      --replace 'Exec=AppRun' 'Exec=${pname}'
+  '';
+
+  passthru.updateScript = ./update-plexamp.sh;
+
+  meta = with lib; {
+    description = "A beautiful Plex music player for audiophiles, curators, and hipsters";
+    homepage = "https://plexamp.com/";
+    changelog = "https://forums.plex.tv/t/plexamp-release-notes/221280/44";
+    license = licenses.unfree;
+    maintainers = with maintainers; [ killercup synthetica ];
+    platforms = [ "x86_64-linux" ];
+  };
+}