[Nix-dev] selectVersion

[Michael Raskin]

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Nicolas Pierron wrote:
> If I understand the point of selectVersion, this was used to override
> the default version number when it is used with composedArgsAndFun.
> So if you need a non-default version, you can just specify which
> version you want.
> 
> look at ltrace to see an example on elfutils.

also selectVersion passes version to the file, so the least noticeable
place where version is used (derivation name) is updated automatically
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