In the wmf-config repository, we currently keep two inlined copies of source code we actually maintain elsewhere:
- in /lib, a copy of excimer-ui-client from https://gerrit.wikimedia.org/g/performance/excimer-ui-client
- in /src/Profiler.php, a copy of ArcLamp.php client, from https://gerrit.wikimedia.org/g/performance/arc-lamp
In order to simplify ownership and maintenance of these, I suggest we consider linking these direclty somehow. Perhaps we could use two git-submodule references for this?