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/markdownsuperscript/default.nix

@@ -0,0 +1,31 @@
+{ lib, buildPythonPackage, fetchPypi, markdown,
+  pytest, pytest-runner, pytest-cov, coverage }:
+
+buildPythonPackage rec {
+  pname = "MarkdownSuperscript";
+  version = "2.1.1";
+
+  src = fetchPypi {
+    inherit pname version;
+    sha256 = "2c255b5959c1f5dd364ae80762bd0a568a0fcc9fd4e4a3d7e7b192e88adf8900";
+  };
+
+  propagatedBuildInputs = [ markdown ];
+
+  postPatch = ''
+    # remove version bounds for Markdown dependency
+    sed 's/\["Markdown.*"\]/["Markdown"]/' -i setup.py
+
+    # remove version bounds for test dependencies
+    sed 's/=.*//' -i requirements/*.txt
+  '';
+
+  checkInputs = [ pytest pytest-runner pytest-cov coverage ];
+
+  meta = with lib; {
+    description = "An extension to the Python Markdown package enabling superscript text";
+    homepage = "https://github.com/jambonrose/markdown_superscript_extension";
+    license = licenses.bsd2;
+    broken = true; # unmaintained in nixpkgs, barely maintained in pypi, added 2020-11-29
+  };
+}