[Yum] $releasever Issue

[seth vidal]

On Wed, 2011-03-09 at 16:36 -0500, Brian Long wrote:
> I'm playing with a tool called mrepo which allows one to automate the
> mounting of distro ISOs, download updates, and serve them via yum.  It
> was written before Spacewalk was available and in my limited testing
> seems to work well.
> 
> The only issue comes with the default directory structure and yum
> variable $releasever.  If I mount the RHEL 6 Server ISO, it defaults to
> rhel6s-x86_64/disc1 and RHEL 6 Workstation goes to rhel6w-x86_64/disc1.
>  I'd like to use $releasever for the "6" so I could add support for RHEL
> 5.x in the future, but yum doesn't like "$releasevers" (notice the
> trailing s) or ${releasever}s like bash.  Is there a way to get this
> working with $releasever or should I consider changing mrepo to use a
> different directory name to distinguish Server vs. Workstation?  I spend
> a few minutes trolling through yum's source code but couldn't see how
> the yum.conf was parsing releasever.
> 

it's in parser.py

it's
_KEYCRE = re.compile(r"\$(\w+)")


it's trying to grab the longest contiguous var name for the match

so it is sees $releasevers

not $releasever.

looks like we need a more clever match there.

-sv