dconf2nix should invert special case for empty string lists

[johanbrandhorst]

The fix for nix-community/home-manager#769 introduced a special case for empty string lists when parsing the config. In short the following mapping happens:

[] -> @as []

See the logic here: nix-community/home-manager@5d054ab#diff-1afc90afe9ca8ef2ec31b8fcee765e03d38679506e051053848e4b14aed57bbaR22.

dconf2nix should invert this logic, so the following mapping happens:

@as [] -> []

Currently, this configuration value maps to

"@as []"

This mapping breaks keybindings which unset keys.

[johanbrandhorst]

Thanks for the quick turnaround 😄

[gvolpe]

No problems, you caught me at home with some time to kill :)

I cut a new release: https://github.com/gvolpe/dconf2nix/releases/tag/v0.0.8, should hit nixpkgs in a couple of days.