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/servers/web-apps/lemmy/ui.nix

@@ -0,0 +1,78 @@
+{ lib
+, mkYarnPackage
+, libsass
+, nodejs
+, python3
+, pkg-config
+, fetchFromGitHub
+, fetchYarnDeps
+}:
+
+let
+  pinData = lib.importJSON ./pin.json;
+
+  pkgConfig = {
+    node-sass = {
+      nativeBuildInputs = [ ];
+      buildInputs = [ libsass pkg-config python3 ];
+      postInstall = ''
+        LIBSASS_EXT=auto yarn --offline run build
+        rm build/config.gypi
+      '';
+    };
+  };
+
+  name = "lemmy-ui";
+  version = pinData.version;
+
+  src = fetchFromGitHub {
+    owner = "LemmyNet";
+    repo = name;
+    rev = version;
+    fetchSubmodules = true;
+    sha256 = pinData.uiSha256;
+  };
+in
+mkYarnPackage {
+
+  inherit src pkgConfig name version;
+
+  extraBuildInputs = [ libsass ];
+
+  packageJSON = ./package.json;
+  offlineCache = fetchYarnDeps {
+    yarnLock = src + "/yarn.lock";
+    sha256 = pinData.uiYarnDepsSha256;
+  };
+
+  yarnPreBuild = ''
+    export npm_config_nodedir=${nodejs}
+  '';
+
+  buildPhase = ''
+    # Yarn writes cache directories etc to $HOME.
+    export HOME=$PWD/yarn_home
+
+    ln -sf $PWD/node_modules $PWD/deps/lemmy-ui/
+
+    yarn --offline build:prod
+  '';
+
+  preInstall = ''
+    mkdir $out
+    cp -R ./deps/lemmy-ui/dist $out
+    cp -R ./node_modules $out
+  '';
+
+  distPhase = "true";
+
+  passthru.updateScript = ./update.sh;
+
+  meta = with lib; {
+    description = "Building a federated alternative to reddit in rust";
+    homepage = "https://join-lemmy.org/";
+    license = licenses.agpl3Only;
+    maintainers = with maintainers; [ happysalada billewanick ];
+    platforms = platforms.linux;
+  };
+}