Support XDG spec, or at least an environment variable to customize ~/.localhost path

[nogweii]

I'd prefer to limit the number of dotfiles in my $HOME, so I'd like to move ~/.localhost/ to a different path, possibly ~/.local/state/localhost/ or similar.

That could be done following the XDG standard ($XDG_STATE_HOME seems appropriate), or support a specific environment variable, like $LOCALHOST_AUTHORTIY_PATH.

What do you think?

[ioquatix]

I think it's a good idea and I think your suggestion to default to ~/.local/state/localhost is a good idea (or maybe localhost-ruby or something more specific if we think the current is too generic).

Do you want to open a PR?

[nogweii]

I can open a PR soon, yeah.

Is there a backwards compatibility concern? What should happen to users with an existing ~/.localhost directory? I see a few options:

1. Ignore it
2. Prefer it, if it exists
3. Move it to the new directory

[ioquatix]

I would suggest (3) makes the most sense to me.

Basically:

• If the new directory doesn't exist, and
• The old directory does exist, then
• Move the old directory to the new directory.