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/misc/liberasurecode/default.nix

@@ -0,0 +1,50 @@
+{ lib
+, stdenv
+, fetchFromGitHub
+, autoreconfHook
+, doxygen
+, installShellFiles
+, zlib
+}:
+
+stdenv.mkDerivation rec {
+  pname = "liberasurecode";
+  version = "1.6.3";
+
+  outputs = [ "out" "dev" "doc" ];
+
+  src = fetchFromGitHub {
+    owner = "openstack";
+    repo = pname;
+    rev = version;
+    sha256 = "sha256-HCp+FQ9nq4twk6FtfKhzT80wXXJbvG+clrDO2/9ATpU=";
+  };
+
+  postPatch = ''
+    substituteInPlace doc/doxygen.cfg.in \
+      --replace "GENERATE_MAN           = NO" "GENERATE_MAN           = YES"
+  '';
+
+  nativeBuildInputs = [ autoreconfHook doxygen installShellFiles ];
+
+  buildInputs = [ zlib ];
+
+  configureFlags = [ "--enable-doxygen" ];
+
+  postInstall = ''
+    # remove useless man pages about directories
+    rm doc/man/man*/_*
+    installManPage doc/man/man*/*
+
+    moveToOutput share/liberasurecode/ $doc
+  '';
+
+  checkTarget = "test";
+
+  meta = with lib; {
+    description = "Erasure Code API library written in C with pluggable Erasure Code backends";
+    homepage = "https://github.com/openstack/liberasurecode";
+    license = licenses.bsd2;
+    maintainers = teams.openstack.members;
+  };
+}