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/cram/default.nix

@@ -0,0 +1,32 @@
+{stdenv, lib, buildPythonPackage, fetchPypi, bash, which}:
+
+buildPythonPackage rec {
+  version = "0.7";
+  pname = "cram";
+
+  checkInputs = [ which ];
+
+  src = fetchPypi {
+    inherit pname version;
+    sha256 = "0bvz6fwdi55rkrz3f50zsy35gvvwhlppki2yml5bj5ffy9d499vx";
+  };
+
+  postPatch = ''
+    patchShebangs scripts/cram
+    substituteInPlace tests/test.t \
+      --replace "/bin/bash" "${bash}/bin/bash"
+  '';
+
+  checkPhase = ''
+    scripts/cram tests
+  '';
+
+  meta = {
+    description = "A simple testing framework for command line applications";
+    homepage = "https://bitheap.org/cram/";
+    license = lib.licenses.gpl2Plus;
+    maintainers = with lib.maintainers; [ jluttine ];
+    # Tests fail on i686: https://hydra.nixos.org/build/52896671/nixlog/4
+    broken = stdenv.isi686;
+  };
+}