Switch devenv to use pkg packages

lib/naclports/source_package.py

Index: lib/naclports/source_package.py
diff --git a/lib/naclports/source_package.py b/lib/naclports/source_package.py
index ea356276fe6dc21de15ee553b89d5ba41e30cf1d..d0cd87a0931f42495271ed8bb3e6f534bc9383ba 100644
--- a/lib/naclports/source_package.py
+++ b/lib/naclports/source_package.py
@@ -216,6 +216,8 @@ class SourcePackage(package.Package):
 
   def InstallDeps(self, force, from_source=False):
     for dep in self.Dependencies():
+      if self.TOOLCHAIN_INSTALL == '0':
+        continue
       if not dep.IsAnyVersionInstalled() or force == 'all':
         dep.Install(True, force, from_source)
 
@@ -291,9 +293,7 @@ class SourcePackage(package.Package):
   def CreatePkgFile(self):
     """Create and pkg file for use with the FreeBSD pkg tool.
 
-    This step is designed to run after the build scripts and will
-    package up any files published by the PublishByArchForDevEnv
-    step.
+    Create a package from the result of the package's InstallStep.
     """
     install_dir = self.GetInstallLocation()
     if not os.path.exists(install_dir):
@@ -305,9 +305,7 @@ class SourcePackage(package.Package):
     abi_dir = os.path.join(paths.PUBLISH_ROOT, abi)
     pkg_file = os.path.join(abi_dir, '%s-%s.tbz' % (self.NAME,
       self.VERSION))
-
     util.Makedirs(abi_dir)
-
     deps = self.DEPENDS
     if self.config.toolchain != 'glibc':
         deps = []