Written here, @svanderburg said that Nix try to comply as close as possible with standard (well, with FHS). Whilst, it is failed to fully comply with FHS, why we don't try to comply with XDG Base Directory Spec, which more make sense to users?

Nix programs create three directories at my $HOME. Honestly, it looks very bad for me (by far no complaints on the Internet sadly).

I wanted to create a patch for this if granted.

Best,
Abdillah