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/shells/fish/plugins/build-fish-plugin.nix

@@ -0,0 +1,73 @@
+{ stdenv, lib, writeScript, wrapFish }:
+
+attrs@{
+  pname,
+  version,
+  src,
+
+  name ? "fishplugin-${pname}-${version}",
+  unpackPhase ? "",
+  configurePhase ? ":",
+  buildPhase ? ":",
+  preInstall ? "",
+  postInstall ? "",
+
+  checkInputs ? [],
+  # plugin packages to add to the vendor paths of the test fish shell
+  checkPlugins ? [],
+  # vendor directories to add to the function path of the test fish shell
+  checkFunctionDirs ? [],
+  # test script to be executed in a fish shell
+  checkPhase ? "",
+  doCheck ? checkPhase != "",
+
+  ...
+}:
+
+let
+  # Do not pass attributes that are only relevant to buildFishPlugin to mkDerivation.
+  drvAttrs = builtins.removeAttrs attrs [
+    "checkPlugins"
+    "checkFunctionDirs"
+  ];
+in
+
+stdenv.mkDerivation (drvAttrs // {
+  inherit name;
+  inherit unpackPhase configurePhase buildPhase;
+
+  inherit preInstall postInstall;
+  installPhase = ''
+    runHook preInstall
+
+    (
+      install_vendor_files() {
+        source="$1"
+        target="$out/share/fish/vendor_$2.d"
+
+        [ -d $source ] || return 0
+        mkdir -p $target
+        cp -r $source/*.fish "$target/"
+      }
+
+      install_vendor_files completions completions
+      install_vendor_files functions functions
+      install_vendor_files conf conf
+      install_vendor_files conf.d conf
+    )
+
+    runHook postInstall
+  '';
+
+  inherit doCheck;
+
+  checkInputs = [ (wrapFish {
+    pluginPkgs = checkPlugins;
+    functionDirs = checkFunctionDirs;
+  }) ] ++ checkInputs;
+
+  checkPhase = ''
+    export HOME=$(mktemp -d)  # fish wants a writable home
+    fish "${writeScript "${name}-test" checkPhase}"
+  '';
+})