Configuration not evaluated when invoking fish with -c

[eaigner]

I tried to evaluate env like this

env -i /usr/local/bin/fish -l -i -c env

The env -i prefix is required for this test to prevent inheriting my local environment.

This should output the environment of a fresh fish interactive login shell, however, it doesn't seem fish evaluates any configuration at all.

Any user PATHs configured in config.fish or fish_variables do not show up in the PATH= line of the output.

System:

fish, version 3.1.2
macOS Big Sur 11.1 (20C69)

[faho]

Fish always reads config.fish, even in non-interactive and non-login shells.

Your problem is that env -i also erases $HOME, so fish won't find config.fish, so try

env -i HOME=$HOME /usr/local/bin/fish -l -i -c env

[eaigner]

You sir, are correct!

[faho]

On second look, we already try to figure out $HOME and $USER, but we do it a bit too late - after determining the config path.

Simply doing that earlier means this can be worked around - not that I recommend starting fish with an unset $HOME.