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/clf/default.nix

@@ -0,0 +1,29 @@
+{ lib, buildPythonPackage, fetchPypi
+, docopt, requests, pygments }:
+
+buildPythonPackage rec {
+  pname = "clf";
+  version = "0.5.7";
+
+  src = fetchPypi {
+    inherit pname version;
+    sha256 = "abc919a1e99667f32fdde15dfb4bc527dbe22cf86a17acb78a449d7f2dfe937e";
+  };
+
+  patchPhase = ''
+    sed -i 's/==/>=/' requirements.txt
+  '';
+
+  propagatedBuildInputs = [ docopt requests pygments ];
+
+  # Error when running tests:
+  # No local packages or download links found for requests
+  doCheck = false;
+
+  meta = with lib; {
+    homepage = "https://github.com/ncrocfer/clf";
+    description = "Command line tool to search snippets on Commandlinefu.com";
+    license = licenses.mit;
+    maintainers = with maintainers; [ koral ];
+  };
+}