Merge pull request #543 from davidt/compiler-is_outdated

Fix paths given to compiler.is_outdated.

pipeline/compilers/__init__.py

@@ -31,16 +31,16 @@ class Compiler(object):
             for compiler in self.compilers:
                 compiler = compiler(verbose=self.verbose, storage=self.storage)
                 if compiler.match_file(input_path):
-                    output_path = compiler.output_path(input_path, compiler.output_extension)
                     try:
                         infile = self.storage.path(input_path)
                     except NotImplementedError:
                         infile = finders.find(input_path)
                     outfile = compiler.output_path(infile, compiler.output_extension)
-                    outdated = compiler.is_outdated(input_path, output_path)
+                    outdated = compiler.is_outdated(infile, outfile)
                     compiler.compile_file(infile, outfile,
                                           outdated=outdated, force=force)
-                    return output_path
+
+                    return compiler.output_path(input_path, compiler.output_extension)
             else:
                 return input_path