[Vala] Patching valac source for a Launchpad PPA

[Darren Warner <vala-list dazwin com>]

Apologies, this is a Launchpad question, but it is quite vala-specific.

I'm uploading a patched valac to my own launchpad PPA. The problem I'm 
coming across is that the timestamps of the generated/included .c files 
must be later than their corresponding .vala files, otherwise the build 
process tries to invoke valac, which of course is not there in a 
PPA/pbuilder environment.

I've tried not using quilt to maintain patches and simply made the 
changes to the source tree, but both .vala and .c files still get 
updated timestamps.

I'm thinking this must be a problem maintainers of vala packages have 
already come across and solved, so any help would be appreciated.

Thanks


-Darren