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/tools/graphics/escrotum/default.nix

@@ -0,0 +1,48 @@
+{ lib, python3Packages, fetchFromGitHub
+, gtk3
+, pango
+, gobject-introspection
+, wrapGAppsHook
+}:
+
+with python3Packages; buildPythonApplication {
+  pname = "escrotum";
+  version = "unstable-2020-12-07";
+
+  src = fetchFromGitHub {
+    owner  = "Roger";
+    repo   = "escrotum";
+    rev    = "a41d0f11bb6af4f08e724b8ccddf8513d905c0d1";
+    sha256 = "sha256-z0AyTbOEE60j/883X17mxgoaVlryNtn0dfEB0C18G2s=";
+  };
+
+  buildInputs = [
+    gtk3
+    pango
+  ];
+
+  nativeBuildInputs = [
+    gobject-introspection
+    wrapGAppsHook
+  ];
+
+  propagatedBuildInputs = [ pygobject3 xcffib pycairo numpy ];
+
+  # Cannot find pango without strictDeps = false
+  strictDeps = false;
+
+  outputs = [ "out" "man" ];
+
+  postInstall = ''
+    mkdir -p $man/share/man/man1
+    cp man/escrotum.1 $man/share/man/man1/
+  '';
+
+  meta = with lib; {
+    homepage = "https://github.com/Roger/escrotum";
+    description = "Linux screen capture using pygtk, inspired by scrot";
+    platforms = platforms.linux;
+    maintainers = with maintainers; [ rasendubi ];
+    license = licenses.gpl3;
+  };
+}