fish completions should be installed to /usr/share/fish/vendor-completions.d

[hanoii]

Description

I am installing the deb package manually ona debian trixie based image in a Dockerfile. fish (v4.7.1) completions were not working and I started wondering why.

I traced this back to fish-shell/fish-shell#12220 and https://fishshell.com/docs/current/relnotes.html#changes-to-self-installing-builds

Completions should now be installed to $PREFIX/share/fish/vendor_completions.d.

Version: 3.51.1
Operating system: Linux

[hanoii]

Note, is where the hombrew formulae installs it.