nodejs: fix Darwin build

- Add no-xcode patch back into node v5. Reverts some of
  5cb1e43fd6
- Fix patch to apply correctly
- Remove pkg-libpath patch from v4

pkgs/development/web/nodejs/no-xcode.patch

@@ -1,5 +1,5 @@
 diff --git a/tools/gyp/pylib/gyp/xcode_emulation.py b/tools/gyp/pylib/gyp/xcode_emulation.py
-index c002b11..eeb0400 100644
+index 407ead0..8bf64e7 100644
 --- a/tools/gyp/pylib/gyp/xcode_emulation.py
 +++ b/tools/gyp/pylib/gyp/xcode_emulation.py
 @@ -446,10 +446,16 @@ class XcodeSettings(object):
@@ -55,15 +55,3 @@ index c002b11..eeb0400 100644
  
      is_extension = self._IsIosAppExtension() or self._IsIosWatchKitExtension()
      if sdk_root and is_extension:
-@@ -1032,7 +1040,10 @@ class XcodeSettings(object):
-     sdk_root = self._SdkPath(config_name)
-     if not sdk_root:
-       sdk_root = ''
--    return l.replace('$(SDKROOT)', sdk_root)
-+    if self._SdkPath():
-+      return l.replace('$(SDKROOT)', sdk_root)
-+    else:
-+      return l
- 
-   def AdjustLibraries(self, libraries, config_name=None):
-     """Transforms entries like 'Cocoa.framework' in libraries into entries like

pkgs/development/web/nodejs/pkg-libpath.patch

@@ -1,13 +0,0 @@
-diff --git a/configure b/configure
-index d199975..66d903b 100755
---- a/configure
-+++ b/configure
-@@ -734,7 +734,7 @@ def configure_library(lib, output):
-     # libpath needs to be provided ahead libraries
-     if pkg_libpath:
-       output['libraries'] += (
--          filter(None, map(str.strip, pkg_cflags.split('-L'))))
-+          pkg_libpath.split())
- 
-     default_libs = getattr(options, shared_lib + '_libname')
-     default_libs = map('-l{0}'.format, default_libs.split(','))

pkgs/development/web/nodejs/v4.nix

@@ -41,7 +41,7 @@ in stdenv.mkDerivation {
     sed -i 's/raise.*No Xcode or CLT version detected.*/version = "7.0.0"/' tools/gyp/pylib/gyp/xcode_emulation.py
   '';
 
-  patches = stdenv.lib.optionals stdenv.isDarwin [ ./no-xcode.patch ./pkg-libpath.patch ];
+  patches = stdenv.lib.optionals stdenv.isDarwin [ ./no-xcode.patch ];
 
   postFixup = ''
     sed -i 's/raise.*No Xcode or CLT version detected.*/version = "7.0.0"/' $out/lib/node_modules/npm/node_modules/node-gyp/gyp/pylib/gyp/xcode_emulation.py

pkgs/development/web/nodejs/v5.nix

@@ -38,8 +38,11 @@ in stdenv.mkDerivation {
   dontDisableStatic = true;
   prePatch = ''
     patchShebangs .
+    sed -i 's/raise.*No Xcode or CLT version detected.*/version = "7.0.0"/' tools/gyp/pylib/gyp/xcode_emulation.py
   '';
 
+  patches = stdenv.lib.optionals stdenv.isDarwin [ ./no-xcode.patch ];
+
   buildInputs = [ python which zlib libuv openssl python ]
     ++ optionals stdenv.isLinux [ utillinux http-parser ]
     ++ optionals stdenv.isDarwin [ pkgconfig openssl libtool ];