Catppuccin Theme style follows System's Light/Dark Mode state

[sharry]

Has anyone figured out how to make the settings.vim.theme.style follows the system's Light/Dark mode.

In my case, I am on macOS 15.2, I am using "catppuccin" as my settings.vim.theme.name. I specifically want the style to be "mocha" in dark mode and "latte" in light mode.

[NotAShelf]

The "easiest" way would be to do this via home-manager's specializations. Alternatively, using raw lua, you can try to update Neovim's color scheme on generation switch by updating the colorscheme table.

[sharry]

Home Manager Specialisations seems good enough, Do you know how to activate a specialization when having home-manager as a nix-darwin module? the docs propose to run home-manager generations | head -1 to get the latest generation, which I can't do in my case.

[NotAShelf]

I'm not exactly sure, I have never used nix-darwin and have dropped home-manager some time ago.

Might be worth asking in some nix-darwin/home-manager related chatroom.

[e-v-o-l-v-e]

hello, really late but who knows, it might help someone.

I spent my evening trying to achieve something like that,

my first idea was to follow the terminal colors, like vim, but for some reason i could not achieve that (maybe skill issue, if not i would be great to have this possibility at some point ^^)

after spending far too much time on weird error and stupid ideas I managed to have something working : i use the -c argument when starting nvim.

I wrapped it up in a fish function (the same is probably possible in bash or zsh, or just alias) :

programs.fish.functions = {
  "nvim" = {
    argumentNames = [ "argv" ];
    body = ''
      if test $THEME = "light"
        command nvim -c "colorscheme tokyonight-day" $argv
      else 
        # the default is dark, so no need for special command here
        command nvim $argv
      end
    '';
  };
};

and it seems to work well for now

(my goal was to be able to change it without having to rebuild each time, as someone who change themes a lot it gets quicky annoying, especially when each minor change takes 30 seconds to evaluate 🤷)

edit : now I feel jaded, seeing how simple this solution finally was 😓

edit 2 : it is mentioned in the FAQ that you can still keep part of your config as lua in .config/nvim, would colors set there be taken into account at rebuild time or at launch time ? this could be the simple solution, to use more customized themes etc