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/vispy/default.nix

@@ -0,0 +1,73 @@
+{ lib
+, stdenv
+, buildPythonPackage
+, substituteAll
+, fetchPypi
+, cython
+, fontconfig
+, freetype-py
+, hsluv
+, kiwisolver
+, libGL
+, numpy
+, setuptools-scm
+, setuptools-scm-git-archive
+}:
+
+buildPythonPackage rec {
+  pname = "vispy";
+  version = "0.10.0";
+
+  src = fetchPypi {
+    inherit pname version;
+    sha256 = "sha256-t2rW8+rK2/xJRM+4IR6ttuqEF6WQmT7OWqfKrAgs/8I=";
+  };
+
+  patches = [
+    (substituteAll {
+      src = ./library-paths.patch;
+      fontconfig = "${fontconfig.lib}/lib/libfontconfig${stdenv.hostPlatform.extensions.sharedLibrary}";
+      gl = "${libGL.out}/lib/libGL${stdenv.hostPlatform.extensions.sharedLibrary}";
+    })
+  ];
+
+  nativeBuildInputs = [
+    cython
+    setuptools-scm
+    setuptools-scm-git-archive
+  ];
+
+  buildInputs = [
+    libGL
+  ];
+
+  propagatedBuildInputs = [
+    fontconfig
+    freetype-py
+    hsluv
+    kiwisolver
+    numpy
+  ];
+
+  doCheck = false;  # otherwise runs OSX code on linux.
+
+  pythonImportsCheck = [
+    "vispy"
+    "vispy.color"
+    "vispy.geometry"
+    "vispy.gloo"
+    "vispy.glsl"
+    "vispy.io"
+    "vispy.plot"
+    "vispy.scene"
+    "vispy.util"
+    "vispy.visuals"
+  ];
+
+  meta = with lib; {
+    homepage = "https://vispy.org/index.html";
+    description = "Interactive scientific visualization in Python";
+    license = licenses.bsd3;
+    maintainers = with maintainers; [ goertzenator ];
+  };
+}

pkgs/development/python-modules/vispy/library-paths.patch

@@ -0,0 +1,39 @@
+diff --git a/vispy/ext/fontconfig.py b/vispy/ext/fontconfig.py
+index ff24662b..6a5079f0 100644
+--- a/vispy/ext/fontconfig.py
++++ b/vispy/ext/fontconfig.py
+@@ -7,10 +7,7 @@ from ..util.wrappers import run_subprocess
+ 
+ # Some code adapted from Pyglet
+ 
+-fc = util.find_library('fontconfig')
+-if fc is None:
+-    raise ImportError('fontconfig not found')
+-fontconfig = cdll.LoadLibrary(fc)
++fontconfig = cdll.LoadLibrary('@fontconfig@')
+ 
+ FC_FAMILY = 'family'.encode('ASCII')
+ FC_SIZE = 'size'.encode('ASCII')
+diff --git a/vispy/gloo/gl/gl2.py b/vispy/gloo/gl/gl2.py
+index d5bd9c38..63350e73 100644
+--- a/vispy/gloo/gl/gl2.py
++++ b/vispy/gloo/gl/gl2.py
+@@ -39,16 +39,8 @@ elif sys.platform.startswith('win'):
+         pass
+ else:
+     # Unix-ish
+-    if sys.platform.startswith('darwin'):
+-        _fname = ctypes.util.find_library('OpenGL')
+-    else:
+-        _fname = ctypes.util.find_library('GL')
+-    if not _fname:
+-        logger.warning('Could not load OpenGL library.')
+-        _lib = None
+-    else:
+-        # Load lib
+-        _lib = ctypes.cdll.LoadLibrary(_fname)
++    # Load lib
++    _lib = ctypes.cdll.LoadLibrary("@gl@")
+ 
+ 
+ def _have_context():