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/compilers/gerbil/gerbil-support.nix

@@ -0,0 +1,76 @@
+{ pkgs, lib, gccStdenv, callPackage, fetchFromGitHub }:
+# See ../gambit/build.nix regarding gccStdenv
+
+rec {
+  # Gerbil libraries
+  gerbilPackages-unstable = {
+    gerbil-libp2p = callPackage ./gerbil-libp2p.nix { };
+    gerbil-utils = callPackage ./gerbil-utils.nix { };
+    gerbil-crypto = callPackage ./gerbil-crypto.nix { };
+    gerbil-poo = callPackage ./gerbil-poo.nix { };
+    gerbil-persist = callPackage ./gerbil-persist.nix { };
+    gerbil-ethereum = callPackage ./gerbil-ethereum.nix { };
+    smug-gerbil = callPackage ./smug-gerbil.nix { };
+  };
+
+  # Use this function in any package that uses Gerbil libraries, to define the GERBIL_LOADPATH.
+  gerbilLoadPath =
+    gerbilInputs : builtins.concatStringsSep ":" (map (x : x + "/gerbil/lib") gerbilInputs);
+
+  # Use this function to create a Gerbil library. See gerbil-utils as an example.
+  gerbilPackage = {
+    pname, version, src, meta, gerbil-package,
+    git-version ? "", version-path ? "",
+    gerbil ? pkgs.gerbil-unstable,
+    gambit-params ? pkgs.gambit-support.stable-params,
+    gerbilInputs ? [],
+    buildInputs ? [],
+    buildScript ? "./build.ss",
+    softwareName ? ""} :
+    let buildInputs_ = buildInputs; in
+    gccStdenv.mkDerivation rec {
+      inherit src meta pname version;
+      passthru = { inherit gerbil-package version-path ;};
+      buildInputs = [ gerbil ] ++ gerbilInputs ++ buildInputs_;
+      postPatch = ''
+        set -e ;
+        if [ -n "${version-path}.ss" ] ; then
+          echo -e '(import :clan/versioning${builtins.concatStringsSep ""
+                     (map (x : lib.optionalString (x.passthru.version-path != "")
+                               " :${x.passthru.gerbil-package}/${x.passthru.version-path}")
+                          gerbilInputs)
+                     })\n(register-software "${softwareName}" "v${git-version}")\n' > "${passthru.version-path}.ss"
+        fi
+        patchShebangs . ;
+      '';
+
+      postConfigure = ''
+        export GERBIL_BUILD_CORES=$NIX_BUILD_CORES
+        export GERBIL_PATH=$PWD/.build
+        export GERBIL_LOADPATH=${gerbilLoadPath gerbilInputs}
+        ${pkgs.gambit-support.export-gambopt gambit-params}
+      '';
+
+      buildPhase = ''
+        runHook preBuild
+        ${buildScript}
+        runHook postBuild
+      '';
+
+      installPhase = ''
+        runHook preInstall
+        mkdir -p $out/gerbil/lib
+        cp -fa .build/lib $out/gerbil/
+        bins=(.build/bin/*)
+        if [ 0 -lt ''${#bins} ] ; then
+          cp -fa .build/bin $out/gerbil/
+          mkdir $out/bin
+          cd $out/bin
+          ln -s ../gerbil/bin/* .
+        fi
+        runHook postInstall
+      '';
+
+      dontFixup = true;
+    };
+}