jas@kaka ~/src/guile-gnutls$ guix install texlive
The following package will be installed:
   texlive 20210325

The following derivation will be built:
  /gnu/store/gdccckih05l3ylcppp6dy8s1ibdis5br-texlive-texmf-20210325.drv

3475.8 MB will be downloaded
retrying download of '/gnu/store/4rv29ip0aa5729kmm41mx0n7kszfvlfd-texlive-texmf-20210325' with other substitute URLs...
 texlive-texmf-20210325  3.24GiB                                                                                                                                                                 5.9MiB/s 05:39 [##########        ]  60.2%guix substitute: error: failed to find alternative substitute for '/gnu/store/4rv29ip0aa5729kmm41mx0n7kszfvlfd-texlive-texmf-20210325'
substitution of /gnu/store/4rv29ip0aa5729kmm41mx0n7kszfvlfd-texlive-texmf-20210325 failed
guix install: error: some substitutes for the outputs of derivation `/gnu/store/rb2ysl9hfagxp6g9fsnzgwkja5z7xjyf-texlive-20210325.drv' failed (usually happens due to networking issues); try `--fallback' to build derivation from source
jas@kaka ~/src/guile-gnutls$