… while calling the 'throw' builtin
         at /var/lib/ofborg/checkout/repo/38dca4e3aa6bca43ea96d2fcc04e8229/builder/ofborg-core/pkgs/top-level/aliases.nix:1777:10:
         1776|   sloccount = throw "'sloccount' has been removed because it is unmaintained. Consider migrating to 'loccount'"; # added 2025-05-17
         1777|   slrn = throw "'slrn' has been removed because it is unmaintained upstream and broken."; # Added 2025-06-11
             |          ^
         1778|   slurm-llnl = slurm; # renamed July 2017

       error: 'slrn' has been removed because it is unmaintained upstream and broken.