Use root repository as a default complement for git repository

1 files changed, 14 insertions, 0 deletions

diff --git a/bpkg/rep-fetch.cxx b/bpkg/rep-fetch.cxx
index 029db1d..e78ae064 100644
--- a/bpkg/rep-fetch.cxx
+++ b/bpkg/rep-fetch.cxx
@@ -367,6 +367,7 @@ namespace bpkg
     case repository_type::git:  return rep_fetch_git  (co, conf, rl, iu);
     }
 
+    assert (false); // Can't be here.
     return rep_fetch_data ();
   }
 
@@ -500,6 +501,19 @@ namespace bpkg
       }
     }
 
+    // For git repositories that have neither prerequisites nor complements
+    // we use the root repository as the default complement.
+    //
+    // This supports the common use case where the user has a single-package
+    // git repository and doesn't want to bother with the repositories file.
+    // This way their package will still pick up its dependencies from the
+    // configuration, without regards from which repositories they came from.
+    //
+    if (rl.type () == repository_type::git &&
+        r->complements.empty ()            &&
+        r->prerequisites.empty ())
+      r->complements.insert (lazy_shared_ptr<repository> (db, root));
+
     // "Suspend" session while persisting packages to reduce memory
     // consumption.
     //