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/applications/science/electronics/flatcam/default.nix

@@ -0,0 +1,57 @@
+{ lib
+, python3Packages
+, fetchFromBitbucket
+, fetchpatch
+}:
+
+python3Packages.buildPythonApplication rec {
+  pname = "flatcam";
+  version = "8.5";
+
+  src = fetchFromBitbucket {
+    owner = "jpcgt";
+    repo = pname;
+    rev = "533afd6a1772857cb633c011b5e0a15b60b1e92e"; # 8.5 with Red Hat packaging.
+    sha256 = "199kiiml18k34z1zhk2hbhibphmnv0kb11kxiajq52alps0mjb3m";
+  };
+
+  propagatedBuildInputs = with python3Packages; [
+    matplotlib
+    numpy
+    packaging
+    pyqt4
+    Rtree
+    scipy
+    setuptools
+    shapely
+    simplejson
+    six
+    svg-path
+  ];
+
+  packaging_fix_pull_request_patch = fetchpatch {
+    name = "packaging_fix_pull_request.patch";
+    url = "https://bitbucket.org/trepetti/flatcam/commits/5591ed889d1f48a5190fe237b562cb932cb5876c/raw";
+    sha256 = "19rhjdrf1n1q29cgpcry6pl2kl90zq0d613hhkwdir9bhq5bkknp";
+  };
+
+  patches = [
+    packaging_fix_pull_request_patch
+    ./release.patch
+  ];
+
+  # Only non-GUI tests can be run deterministically in the Nix build environment.
+  checkPhase = ''
+    python -m unittest tests.test_excellon
+    python -m unittest tests.test_gerber_buffer
+    python -m unittest tests.test_paint
+    python -m unittest tests.test_pathconnect
+  '';
+
+  meta = with lib; {
+    description = "2-D post processing for PCB fabrication on CNC routers";
+    homepage = "https://bitbucket.org/jpcgt/flatcam";
+    license = licenses.mit;
+    maintainers = with maintainers; [ trepetti ];
+  };
+}