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/libraries/libcork/default.nix

@@ -0,0 +1,45 @@
+{ stdenv
+, fetchFromGitHub
+, cmake
+, lib
+, pkg-config
+, check
+}:
+stdenv.mkDerivation rec {
+  pname = "libcork";
+  version = "1.0.0--rc3";
+
+  src = fetchFromGitHub {
+    owner = "dcreager";
+    repo = pname;
+    rev = version;
+    sha256 = "152gqnmr6wfmflf5l6447am4clmg3p69pvy3iw7yhaawjqa797sk";
+  };
+
+  # N.B. We need to create this file, otherwise it tries to use git to
+  # determine the package version, which we do not want.
+  #
+  # N.B. We disable tests by force, since their build is broken.
+  postPatch = ''
+    echo "${version}" > .version-stamp
+    echo "${version}" > .commit-stamp
+    sed -i '/add_subdirectory(tests)/d' ./CMakeLists.txt
+  '';
+
+  nativeBuildInputs = [ cmake pkg-config ];
+  buildInputs = [ check ];
+
+  doCheck = false;
+
+  postInstall = ''
+    ln -s $out/lib/libcork.so $out/lib/libcork.so.1
+  '';
+
+  meta = with lib; {
+    homepage = "https://github.com/dcreager/libcork";
+    description = "A simple, easily embeddable cross-platform C library";
+    license = licenses.bsd3;
+    platforms = platforms.unix;
+    maintainers = with maintainers; [ lovesegfault ];
+  };
+}