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/sympy/default.nix

@@ -0,0 +1,35 @@
+{ lib
+, buildPythonPackage
+, fetchPypi
+, glibcLocales
+, mpmath
+}:
+
+buildPythonPackage rec {
+  pname = "sympy";
+  version = "1.10.1";
+
+  src = fetchPypi {
+    inherit pname version;
+    sha256 = "sha256-WTnu/9+eFSFyYBRjYmwCKiwn51z2J43o1AHVDJ1YeHs=";
+  };
+
+  checkInputs = [ glibcLocales ];
+
+  propagatedBuildInputs = [ mpmath ];
+
+  # tests take ~1h
+  doCheck = false;
+  pythonImportsCheck = [ "sympy" ];
+
+  preCheck = ''
+    export LANG="en_US.UTF-8"
+  '';
+
+  meta = with lib; {
+    description = "A Python library for symbolic mathematics";
+    homepage    = "https://www.sympy.org/";
+    license     = licenses.bsd3;
+    maintainers = with maintainers; [ lovek323 ] ++ teams.sage.members;
+  };
+}