update 'ui.use_verification_components'

Author: 1138-4EB

vunit/ui.py

@@ -1111,7 +1111,8 @@ def add_verification_components(self, location=None):
         :returns: a dict containing the 'third_party' location and the known/supported VCs.
         """
         self._builtins.add("verification_components")
-        return _read_vcs_cfg(location=location)
+        if location:
+            return _read_vcs_cfg(location=location)
 
     def use_verification_components(self, cfg, vc_list):
         """
@@ -1182,11 +1183,6 @@ def _traverse_vc_cfg(cfg, vc_list, func, task, depends=True):
     """
 
     """
-    wh_loc = cfg['third_party']
-    if not isdir(wh_loc):
-        print('Creating directory ' + wh_loc)
-        mkdir(wh_loc)
-
     for key in vc_list:
         if key not in cfg:
             print('VC <' + key + '> not defined. Please add it to the configuration first.')
@@ -1206,13 +1202,8 @@ def _add_vc(key, cfg, task, depends=True):
     item = cfg[key]
     loc = item['path'] if isabs(item['path']) else join(cfg['third_party'], item['path'])
     if not isdir(loc):
-        print('VC <' + key + '> not available locally.')
-        print(popen(' '.join([
-            'git',
-            'clone',
-            item['remote'],
-            loc
-        ])).read())
+        print('VC <%s> not available found. Please install it to %s' % (key, loc))
+        exit(1)
 
     vc_cfg_file = join(loc, 'vunit_cfg.json')
     if not isfile(vc_cfg_file):
@@ -1222,7 +1213,6 @@ def _add_vc(key, cfg, task, depends=True):
 
     if depends:
         for name, _ in vc_cfg['depends'].items():
-            # TODO Check 'val', which tells the minimum and/or maximum required version
             if name == 'VUnit':
                 continue
             _add_vc(name, cfg, task)