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/games/20kly/default.nix

@@ -0,0 +1,46 @@
+{ lib
+, fetchFromGitHub
+, python3Packages
+}:
+
+python3Packages.buildPythonApplication rec {
+  pname = "20kly";
+  version = "1.5.0";
+
+  format = "other";
+
+  src = fetchFromGitHub {
+    owner = "20kly";
+    repo = "20kly";
+    rev = "v${version}";
+    sha256 = "1zxsxg49a02k7zidx3kgk2maa0vv0n1f9wrl5vch07sq3ghvpphx";
+  };
+
+  patchPhase = ''
+    substituteInPlace lightyears \
+      --replace \
+        "LIGHTYEARS_DIR = \".\"" \
+        "LIGHTYEARS_DIR = \"$out/share\""
+  '';
+
+  propagatedBuildInputs = with python3Packages; [
+    pygame
+  ];
+
+  buildPhase = ''
+    python -O -m compileall .
+  '';
+
+  installPhase = ''
+    mkdir -p "$out/share"
+    cp -r data lib20k lightyears "$out/share"
+    install -Dm755 lightyears "$out/bin/lightyears"
+  '';
+
+  meta = with lib; {
+    description = "A steampunk-themed strategy game where you have to manage a steam supply network";
+    homepage = "http://jwhitham.org.uk/20kly/";
+    license = licenses.gpl2Only;
+    maintainers = with maintainers; [ fgaz ];
+  };
+}