[buildd-tools-devel] Bug#751732: Bug#751732: Bug#751732: sbuild-createchroot: No overlay configured by default

[Wookey]

+++ Johannes Schauer [2015-12-24 01:07 +0100]:
> Hi,

You've been a busy bee tonight!
 
> > I'd be happy for sbuild-createchroot to switch to tar by default;
> > please feel free to commit and upload such a change.
> 
> unfortunately the current synopsis of sbuild-createchroot is:
> 
> sbuild-createchroot [...] SUITE TARGET-DIRECTORY DEBIAN-MIRROR-URI
> 
> If tarball creation were to become the default, then the TARGET-DIRECTORY
> positional argument would become a tarball path instead. Would this not break
> backwards compatibility with users/scripts assuming that this argument is a
> directory? It is even assumed to be a directory when adding the
> --make-sbuild-tarball option.
> 
> So how about doing this instead:
> 
>  - promote the --make-sbuild-tarball option more in the EXAMPLES section of the
>    sbuild-createchroot man page as it is already done in the sbuild wiki page.
> 
>  - when creating a directory based schroot, add union-type=overlay option by
>    default
> 
> What do you think?

I think that would certianly be an improvement and agree that it would
avoid incompatible/confusing changes.

I'm not sure how much of a problem changing the meaning of that param
from dir to tarball-basename actually is in practice. Perhaps it would
still be worth it, to get a 'better' default. Doing it at t ime when
lots of sbuild things are changing anyway might make sense...

But I'm OK with taking the compatible route for now as that's easier
and won't break anything.

Wookey
-- 
Principal hats:  Linaro, Debian, Wookware, ARM
http://wookware.org/
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