hook: have a generic hook for transaction opening We are adding generic hooking for all transactions. We do not really have any useful information to include when opening the transaction but this is a useful time to allow a hook anyway. We better let people abort transaction before they happen than after multiple seconds/minutes of processing.

     1

Testing that hghave does not crash when checking features

     2

     3

  $ "$TESTDIR/hghave" --test-features 2>/dev/null