contao/core — comment on commit 07750810f1d940e668a68f814e57858ea5c439a7
File: system/config/constants.php line 60
By fbender:

As long as this branch is not Beta, would you mind changing the BUILD constant to something like `pre` or `pre-beta1`? This should be done for all non-release versions (beta, RC or final) to differentiate trunk "builds" more easily form release builds.

The MooTools project sets its equivalent value to `%pre%` (AFAIK) and updates it to the latest commit ID on every release (and resets it immediately after the tag has been created and the files were released).

If you're concerned about ER compatibility, would you mind adding an extra check somewhere (might be enough to modify rep_base or rep_client) so that this isn't a problem?