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/kaldi-active-grammar/default.nix

@@ -0,0 +1,69 @@
+{ lib
+, buildPythonPackage
+, fetchFromGitHub
+, scikit-build
+, cmake
+, ush
+, requests
+, six
+, numpy
+, cffi
+, openfst
+, substituteAll
+, callPackage
+}:
+
+#
+# Maintainer note: only in-tree dependant is `dragonfly`, try to
+# update the two alongside eachother.
+#
+
+let
+  kaldi = callPackage ./fork.nix { };
+in
+buildPythonPackage rec {
+  pname = "kaldi-active-grammar";
+  version = "3.1.0";
+
+  src = fetchFromGitHub {
+    owner = "daanzu";
+    repo = pname;
+    rev = "v${version}";
+    sha256 = "0lilk6yjzcy31avy2z36bl9lr60gzwhmyqwqn8akq11qc3mbffsk";
+  };
+
+  KALDI_BRANCH = "foo";
+  KALDIAG_SETUP_RAW = "1";
+
+  patches = [
+    # Makes sure scikit-build doesn't try to build the dependencies for us
+    ./0001-stub.patch
+    # Uses the dependencies' binaries from $PATH instead of a specific directory
+    ./0002-exec-path.patch
+    # Makes it dynamically link to the correct Kaldi library
+    (substituteAll {
+      src = ./0003-ffi-path.patch;
+      kaldiFork = "${kaldi}/lib";
+    })
+  ];
+
+  # scikit-build puts us in the wrong folder. That is bad.
+  preBuild = ''
+    cd ..
+  '';
+
+  buildInputs = [ openfst kaldi ];
+  nativeBuildInputs = [ scikit-build cmake ];
+  propagatedBuildInputs = [ ush requests numpy cffi six ];
+
+  doCheck = false;  # no tests exist
+
+  meta = with lib; {
+    description = "Python Kaldi speech recognition";
+    homepage = "https://github.com/daanzu/kaldi-active-grammar";
+    license = licenses.agpl3Plus;
+    maintainers = with maintainers; [ ckie ];
+    # Other platforms are supported upstream.
+    platforms = platforms.linux;
+  };
+}