Hello,

The man page version in Guix 0.12.0 tarball[0] is outdated. When running

    $ man guix

the name of the man page is

    guix - manual page for guix 0.11.0

I think it was forgotten to be updated during the 0.12.0 release.

[0]: https://alpha.gnu.org/gnu/guix/guix-0.12.0.tar.gz

Cheers,
Alex