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/development/tools/documentation/gi-docgen/default.nix

@@ -0,0 +1,54 @@
+{ lib
+, fetchFromGitLab
+, meson
+, ninja
+, python3
+}:
+
+python3.pkgs.buildPythonApplication rec {
+  pname = "gi-docgen";
+  version = "2022.1";
+
+  format = "other";
+
+  src = fetchFromGitLab {
+    domain = "gitlab.gnome.org";
+    owner = "GNOME";
+    repo = pname;
+    rev = version;
+    sha256 = "35pL/2TQRVgPfAcfOGCLlSP1LIh4r95mFC+UoXQEEHo=";
+  };
+
+  depsBuildBuild = [
+    python3
+  ];
+
+  nativeBuildInputs = [
+    meson
+    ninja
+  ];
+
+  pythonPath = with python3.pkgs; [
+    jinja2
+    markdown
+    markupsafe
+    pygments
+    toml
+    typogrify
+  ];
+
+  doCheck = false; # no tests
+
+  postFixup = ''
+    # Do not propagate Python
+    substituteInPlace $out/nix-support/propagated-build-inputs \
+      --replace "${python3}" ""
+  '';
+
+  meta = with lib; {
+    description = "Documentation generator for GObject-based libraries";
+    homepage = "https://gitlab.gnome.org/GNOME/gi-docgen";
+    license = licenses.asl20; # OR GPL-3.0-or-later
+    maintainers = teams.gnome.members;
+  };
+}