Whoops. Missed some references

buildozer/target.py

@@ -1,6 +1,6 @@
 from sys import exit
 import os
-
+from os.path import join
 
 def no_config(f):
     f.__no_config = True
@@ -244,11 +244,9 @@ class Target(object):
         :Returns:
             fully qualified path to updated git repo
         """
-        if platform is None:
-            raise Exception("platform is a required keyword argument")
         cmd = self.buildozer.cmd
         install_dir = join(self.buildozer.platform_dir, repo)
-        custom_dir, clone_url, clone_branch = self.path_or_git_url(repo, platform=platform, **kwargs)
+        custom_dir, clone_url, clone_branch = self.path_or_git_url(repo, **kwargs)
         if not self.buildozer.file_exists(install_dir):
             if custom_dir:
                 cmd('mkdir -p "{}"'.format(install_dir))