[petsc-dev] Fwd: [petsc-maint #119133] petsc-dev configure crash

[Sean Farley]

> If the only issue is being able to get the BuildSystem revision associated
> with a pets-dev revision,
> How about adding a hook to BuildSystem that at each commit, writes the
> number of the revision into a file in the pets-dev repository and does a
> commit in the pets-dev repository? Then all that would be done is
>
> cd $PETSC_DIR
> hg up -r <petsc revision>
> cd config/BuildSystem
> hg up -r `cat $PETSC_DIR/BuildSystemVersion.txt`
> Which I am sure can be done automatically with a hook.
>
> It's not high tech, but it would work, right? Plus this could be done a
> posteriori for all past revisions of BuildSystem.

Actually, mercurial already implements this. They just call it 'subrepos'.