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/servers/sql/postgresql/ext/plr.nix

@@ -0,0 +1,31 @@
+{ lib, stdenv, fetchFromGitHub, pkg-config, R, postgresql }:
+
+stdenv.mkDerivation rec {
+  pname = "plr";
+  version = "8.4.5";
+
+  src = fetchFromGitHub {
+    owner = "postgres-plr";
+    repo = "plr";
+    rev = "REL${builtins.replaceStrings ["."] ["_"] version}";
+    sha256 = "sha256-G/V3I1JI6dWto/hK6lfOTBYEvbmkovvnvk2TwSQq4no=";
+  };
+
+  nativeBuildInputs = [ pkg-config ];
+  buildInputs = [ R postgresql ];
+  preBuild = ''
+    export USE_PGXS=1
+  '';
+  installPhase = ''
+    install -D plr.so -t $out/lib/
+    install -D {plr--*.sql,plr.control} -t $out/share/postgresql/extension
+  '';
+
+  meta = with lib; {
+    description = "PL/R - R Procedural Language for PostgreSQL";
+    homepage = "https://github.com/postgres-plr/plr";
+    maintainers = with maintainers; [ qoelet ];
+    platforms = postgresql.meta.platforms;
+    license = licenses.gpl2Only;
+  };
+}