Removed slow mirror.

Solve issues with tagging.

Update copyright.

Add extra version check in build step.

Merge branch 'master' of github.com:metacall/guix

Remove test for guix version temporally.

Downgrade guix version to 1.3.0.

Removing logs from build workflow.

Delete travis workflow.

Update copyright and remove glibc locales, now it is embedded into guix.