Merge branch 'features/yaml-spec' into features/optional-deps

var/spack/mock_packages/mpileaks/package.py

@@ -33,6 +33,9 @@ class Mpileaks(Package):
     version(2.2, 'foobarbaz')
     version(2.3, 'foobarbaz')
 
+    variant('debug', default=False, description='Debug variant')
+    variant('opt',   default=False, description='Optimized variant')
+
     depends_on("mpi")
     depends_on("callpath")
 

var/spack/packages/python/package.py

@@ -139,7 +139,9 @@ def write_easy_install_pth(self, exts):
 
 
     def activate(self, ext_pkg, **args):
-        args.update(ignore=self.python_ignore(ext_pkg, args))
+        ignore=self.python_ignore(ext_pkg, args)
+        args.update(ignore=ignore)
+
         super(Python, self).activate(ext_pkg, **args)
 
         exts = spack.install_layout.extension_map(self.spec)