$ LANG=C sudo pacman -S spectrwm
Password: 
resolving dependencies...
warning: cannot resolve "profont", a dependency of "spectrwm" 
:: The following package cannot be upgraded due to unresolvable dependencies:
      spectrwm

Do you want to skip the above package for this upgrade? [y/N] N
error: failed to prepare transaction (unexpected error)

Possible solutions:

• blacklist spectrwm * modify spectrwm to not need this font * ask profont authors for relicensing