Why option `xdg.enable` is required? about nix

[isabelroses]

We use xdg.configFile to set a large number of files, so we have the assertion that xdg.enable = true such that those links will work correctly. For example

nix/modules/home-manager/fcitx5.nix

Line 34 in d634461

xdg.configFile."fcitx5/conf/classicui.conf" = lib.mkIf cfg.apply ({

[stasjok]

My question was in what cases they don't work correctly if xdg.enable = false? I and home-manager itself also use xdg.configFile.filename regularly and it works just fine. Files are placed in default directories. Programs are loading them in default directories.

Only env variables are defined when xdg.enable = true: https://github.com/nix-community/home-manager/blob/e3ad5108f54177e6520535768ddbf1e6af54b59d/modules/misc/xdg.nix#L91-L117. Only thing I'm not sure is version older than 20.09. It's treated specially in the home-manager. Maybe this requirement has come from some very some versions?

[stasjok]

Wait, I found a couple of conditions like this in home-manager: https://github.com/nix-community/home-manager/blob/e3ad5108f54177e6520535768ddbf1e6af54b59d/modules/programs/lazygit.nix#L51.

So maybe it is required on Darwin. On Linux I think it's definitely not required.