Implement dependents check in drop command

Also, add support for commands to return program status.

1 files changed, 3 insertions, 1 deletions

diff --git a/bpkg/cfg-create.cxx b/bpkg/cfg-create.cxx
index bbb624c..c98dd28 100644
--- a/bpkg/cfg-create.cxx
+++ b/bpkg/cfg-create.cxx
@@ -18,7 +18,7 @@ using namespace butl;
 
 namespace bpkg
 {
-  void
+  int
   cfg_create (const cfg_create_options& o, cli::scanner& args)
   {
     tracer trace ("cfg_create");
@@ -130,5 +130,7 @@ namespace bpkg
       c.complete ().normalize ();
       text << "created new configuration in " << c;
     }
+
+    return 0;
   }
 }