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/version-management/git-and-tools/git-extras/default.nix

@@ -0,0 +1,42 @@
+{ lib, stdenv, fetchFromGitHub, unixtools, which }:
+
+stdenv.mkDerivation rec {
+  pname = "git-extras";
+  version = "6.4.0";
+
+  src = fetchFromGitHub {
+    owner = "tj";
+    repo = "git-extras";
+    rev = version;
+    sha256 = "sha256-Cn7IXMzgg0QIsNIHz+X14Gkmop0UbsSBlGlGkmg71ek=";
+  };
+
+  postPatch = ''
+    patchShebangs check_dependencies.sh
+  '';
+
+  nativeBuildInputs = [
+    unixtools.column
+    which
+  ];
+
+  dontBuild = true;
+
+  installFlags = [
+    "PREFIX=${placeholder "out"}"
+    "SYSCONFDIR=${placeholder "out"}/share"
+  ];
+
+  postInstall = ''
+    # bash completion is already handled by make install
+    install -D etc/git-extras-completion.zsh $out/share/zsh/site-functions/_git_extras
+  '';
+
+  meta = with lib; {
+    homepage = "https://github.com/tj/git-extras";
+    description = "GIT utilities -- repo summary, repl, changelog population, author commit percentages and more";
+    license = licenses.mit;
+    platforms = platforms.all;
+    maintainers = with maintainers; [ spwhitt cko SuperSandro2000 ];
+  };
+}