Polono PL60

The Polono PL60 label printer does work on Arch Linux, but one undocumented fix is necessary.

Begin by installing the driver provided by Polono.

You should then be able to configure a printer in CUPS. But if you try to print and watch the CUPS /var/log/cups/error_log, you'll see a line like:

D [18/Apr/2022:14:54:09 -0400] [Job 245] POLONO_PL60:
  error while loading shared libraries:
    libcrypt.so.1: cannot open shared object file:
      No such file or directory

Following that hint, the fix is to symlink the latest version of /usr/lib/libcrypt.so from libcrypt.so.1. There could be some lib incompatibility there but it has worked fine for me.