[gentoo-catalyst] Re: Relative paths in spec files

[Charles Duffy]

Andrew Gaffney wrote:
> With catalyst, there are so many paths that could be the "root"
> (/var/tmp/catalyst, /etc/catalyst, some random dir where you store your
> specs, etc.) that it just doesn't work.

I'm not sure that's a problem in everyone's environment.

In my case, I want to be able to check my complete set of configuration 
for catalyst (spec files, overlays, linuxrc replacements, etc etc) into 
subversion and have it Just Work regardless of exactly where the user 
checks it out to. The key here is that because things are stored in 
subversion in a specific tree layout, I know with certainty what the 
relative paths look like on-disk, but I know nothing at all about the 
absolute path.

Now, I can do this by hand by checking .spec.in files into svn and 
preprocessing them, but that's ugly as sin; I'd much prefer to make 
catalyst/modules/parse_spec.py support environment variable substitution 
or somesuch, at least if `yall (agaffney, chris) would accept such a patch.

Would ${VARNAME} be acceptable to substitute in environment variables 
(with ${PWD} being special), or would this stomp on some other 
legitimate syntax?

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