Comment by dzaima

You can 'apt install apl' for GNU APL. Most open-source array languages though either have very few users, and/or are moving quite fast and thus an apt-packaged version would likely be rather out-of-date quite basically always. Though, for example, nix has J, BQN, uiua, GNU APL, and Dyalog APL (based on quick searches), so the barrier to entry to apt also is presumably rather high.