Arun Isaac <arunisaac@systemreboot.net> writes:

> Marius Bakke writes:
>
>> Thanks for this. I'm unable to download the new version with
>> `./pre-inst-env guix build mpop`;
>
> Not sure what the problem is. I was able to build mpop successfully on
> my system. But, I did download manually with `guix download'
> first. Perhaps the build used that downloaded source tarball.

Yes, if the hash already exists in the store, it will be used instead of
downloading.  This has caused some confusion before :-)