Stylix + Nixvim/Neovim - Light themes always have a grey background

[dmarcoux]

Hi,

I'm setting up Stylix to style Neovim (configured via Nixvim) and for an unknown reason, Neovim always has a grey background whenever I set Stylix to use a light theme such as solarized-light.

Here's an example of how this looks in Neovim:

With solarized-light, the background should be a light beige, not grey. In my Neovim config, I have vim.opt.termguicolors = true and my terminal emulator is Alacritty. The only way to have the theme correctly render in Neovim is to disable the styling of Alacritty with stylix.targets.alacritty.enable = false;.

Did someone encounter this? How can I fix this issue?

[trueNAHO]

I'm setting up Stylix to style Neovim (configured via Nixvim) and for an unknown reason, Neovim always has a grey background whenever I set Stylix to use a light theme such as solarized-light.

[...]

With solarized-light, the background should be a light beige, not grey. In my Neovim config, I have vim.opt.termguicolors = true and my terminal emulator is Alacritty. The only way to have the theme correctly render in Neovim is to disable the styling of Alacritty with stylix.targets.alacritty.enable = false;.

Maybe the stylix.targets.nixvim.transparentBackground options resolve your issue:

stylix/modules/nixvim/nixvim.nix

Lines 10 to 13 in 5699ba9

	transparentBackground = {
	main = lib.mkEnableOption "background transparency for the main NeoVim window";
	signColumn = lib.mkEnableOption "background transparency for the NeoVim sign column";
	};

Currently, Neovim and Nixvim are styled through the base16 plugin:

stylix/modules/nixvim/nixvim.nix

Lines 44 to 52 in 5699ba9

	colorschemes.base16 = {
	colorscheme = {
	inherit (config.lib.stylix.colors.withHashtag)
	base00 base01 base02 base03 base04 base05 base06 base07
	base08 base09 base0A base0B base0C base0D base0E base0F;
	};
	enable = true;
	};

Alternatively, take a look at #536.

[dmarcoux]

I tried enabling and disabling stylix.targets.nixvim.transparentBackground, it didn't change anything in both cases.

Beside this, I applied the changes from the PR you linked (#536) and it works! The background is now using the expected color for my theme.