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/python-modules/tbm-utils/default.nix

@@ -0,0 +1,37 @@
+{ lib
+, buildPythonPackage
+, fetchPypi
+, attrs
+, pendulum
+, pprintpp
+, wrapt
+}:
+
+buildPythonPackage rec {
+  pname = "tbm-utils";
+  version = "2.6.0";
+
+  src = fetchPypi {
+    inherit pname version;
+    sha256 = "1v7pb3yirkhzbv1z5i1qp74vl880f56zvzfj68p08b5jxv64hmr3";
+  };
+
+  propagatedBuildInputs = [ attrs pendulum pprintpp wrapt ];
+
+  # this versioning was done to prevent normal pip users from encountering
+  # issues with package failing to build from source, but nixpkgs is better
+  postPatch = ''
+    substituteInPlace setup.py \
+      --replace "'attrs>=18.2,<19.4'" "'attrs'"
+  '';
+
+  # No tests in archive.
+  doCheck = false;
+
+  meta = {
+    description = "A commonly-used set of utilities";
+    homepage = "https://github.com/thebigmunch/tbm-utils";
+    license = with lib.licenses; [ mit ];
+  };
+
+}