[bitbake-devel] [RFC PATCH 0/1] Save the initial environment

[Joshua Lock]

On Thu, 2011-07-21 at 22:22 +0100, Richard Purdie wrote:
> On Mon, 2011-07-18 at 15:33 -0700, Joshua Lock wrote:
> > Both Chris' terminal work and my reparse command will benefit from a saved
> > copy of the initial enviornment. The Python docs indicate that the os.environ
> > map is captured when the os module is first imported
> > http://docs.python.org/library/os.html#os.environ) so this patch adds a
> > variable to the bb namespace (bb.initial_environ) that is an early copy of
> > the environment.
> > 
> > I put the variable here so that a) it's easily accessible and b) we can take
> > the copy pretty early on.
> > 
> > Any thoughts on this? Note the RFC prefix. :-)
> 
> Sorry I didn't reply earlier.

No problem.

> I'd really this the environment storage to be something we do explicitly
> in bin/bitbake alongside:
> 
>     # Clear away any spurious environment variables. But don't wipe the
>     # environment totally. This is necessary to ensure the correct operation
>     # of the UIs (e.g. for DISPLAY, etc.)
>     bb.utils.clean_environment()
> 
> I'd suggest we create a copy there, then pass it into cooker and its
> cooker which actually stores the copy for future reference. We may then
> need to find a way to get to that at the metadata level and from the UIs
> but what shouldn't be too difficult.

Ah yes, that feels much nicer than doing it implicitly in the library.
Expect a v2 RFC shortly (probably in your inbox tomorrow morning ;-))

Thanks,
Joshua
-- 
Joshua Lock
        Yocto Project "Johannes Factotum"
        Intel Open Source Technology Centre