Fixed issue with building modules added by URL

Signed-off-by: Ole Herman Schumacher Elgesem <[email protected]>

cfbs/commands.py

@@ -623,7 +623,10 @@ def _download_dependencies(
         if not os.path.exists(module_dir):
             if url.endswith(SUPPORTED_ARCHIVES):
                 fetch_archive(url, commit)
-            elif "index" in module or ignore_versions:
+            # a couple of cases where there will not be an archive available:
+            # - using an alternate index (index property in module data)
+            # - added by URL instead of name (no version property in module data)
+            elif "index" in module or "url" in module or ignore_versions:
                 sh("git clone %s %s" % (url, commit_dir))
                 sh("(cd %s && git checkout %s)" % (commit_dir, commit))
             else: