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/interpreters/perl/wrapper.nix

@@ -0,0 +1,52 @@
+{ lib, perl, buildEnv, makeWrapper
+, extraLibs ? []
+, extraOutputsToInstall ? []
+, postBuild ? ""
+, ignoreCollisions ? false
+, requiredPerlModules
+}:
+
+# Create a perl executable that knows about additional packages.
+let
+  env = let
+    paths = requiredPerlModules (extraLibs ++ [ perl ] );
+  in buildEnv {
+    name = "${perl.name}-env";
+
+    inherit paths;
+    inherit ignoreCollisions;
+    extraOutputsToInstall = [ "out" ] ++ extraOutputsToInstall;
+
+    nativeBuildInputs = [ makeWrapper ];
+
+    # we create wrapper for the binaries in the different packages
+    postBuild = ''
+      if [ -L "$out/bin" ]; then
+          unlink "$out/bin"
+      fi
+      mkdir -p "$out/bin"
+
+      # take every binary from perl packages and put them into the env
+      for path in ${lib.concatStringsSep " " paths}; do
+        if [ -d "$path/bin" ]; then
+          cd "$path/bin"
+          for prg in *; do
+            if [ -f "$prg" ]; then
+              rm -f "$out/bin/$prg"
+              if [ -x "$prg" ]; then
+                makeWrapper "$path/bin/$prg" "$out/bin/$prg" --suffix PERL5LIB ':' "$out/${perl.libPrefix}"
+              fi
+            fi
+          done
+        fi
+      done
+    '' + postBuild;
+
+    meta = perl.meta // { outputsToInstall = ["out"]; }; # remove "man" from meta.outputsToInstall. pkgs.buildEnv produces no "man", it puts everything to "out"
+
+    passthru = perl.passthru // {
+      interpreter = "${env}/bin/perl";
+      inherit perl;
+    };
+  };
+in env