Not sure if this is the correct venue for this comment, and apologies if it's already been mentioned, but why wouldn't mksh [1] provide ksh?
This would alleviate some AUR dependency weirdness, specifically with the oracle-sqldeveloper [2] package, which currently forces an install of ksh [3], even though it'll work just fine with mksh. -rb [1] https://www.archlinux.org/packages/community/x86_64/mksh/ [2] https://aur.archlinux.org/packages/oracle-sqldeveloper/ [3] https://aur.archlinux.org/packages/ksh/
