bash login shell invocation in mock

[Clark Williams]

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Paul Howarth wrote:
> mock now uses a login shell for the build phase, invoking bash as:
> 
>   bash -l -c ...
> 
> It would be nice if this was changed to:
> 
>   bash --login -c ...
> 
> (twi lines need changing in backend.py)
> 
> This is because the --login long option pre-dates the -l short option in
> bash; the short version isn't understood in some really old
> distributions (like RHL7, don't ask!) and its use precludes use of mock
> in building packages for those releases. The long version seems to work
> everywhere.
> 
> Paul.
> 
>

done and pushed to git repo.

Clark

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