11.stylix/modules/nixvim/nixvim.nix

{
  config,
  lib,
  options,
  ...
}:
let
  cfg = config.stylix.targets.nixvim;
  # Maps `stylix.targets.plugin` values to the appropriate nixvim configuration
  pluginConfigs = {
    "base16-nvim" = {
      inherit highlightOverride;

      colorschemes.base16 = {
        enable = true;

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

      plugins.mini = {
        enable = true;

        modules.base16.palette = {
          inherit (config.lib.stylix.colors.withHashtag)
            base00
            base01
            base02
            base03
            base04
            base05
            base06
            base07
            base08
            base09
            base0A
            base0B
            base0C
            base0D
            base0E
            base0F
            ;
        };
      };
    };
  };
  # Transparent is used a few times below
  transparent = {
    bg = "none";
    ctermbg = "none";
  };
  highlightOverride = {
    Normal = lib.mkIf cfg.transparentBackground.main transparent;
    NonText = lib.mkIf cfg.transparentBackground.main transparent;
    SignColumn = lib.mkIf cfg.transparentBackground.signColumn transparent;
    LineNr = lib.mkIf cfg.transparentBackground.numberLine transparent;
    LineNrAbove = lib.mkIf cfg.transparentBackground.numberLine transparent;
    LineNrBelow = lib.mkIf cfg.transparentBackground.numberLine transparent;
  };
in
{
  options.stylix.targets.nixvim = {
    enable = config.lib.stylix.mkEnableTarget "nixvim" true;
    plugin = lib.mkOption {
      type = lib.types.enum (builtins.attrNames pluginConfigs);
      default = "mini.base16";
      description = "Plugin used for the colorscheme";
    };
    transparentBackground = {
      main = lib.mkEnableOption "background transparency for the main NeoVim window";
      signColumn = lib.mkEnableOption "background transparency for the NeoVim sign column";
      numberLine = lib.mkEnableOption "background transparency for the NeoVim number/relativenumber column";
    };
  };

  imports = [
    (lib.mkRenamedOptionModuleWith {
      from = [
        "stylix"
        "targets"
        "nixvim"
        "transparent_bg"
        "main"
      ];
      sinceRelease = 2411;
      to = [
        "stylix"
        "targets"
        "nixvim"
        "transparentBackground"
        "main"
      ];
    })

    (lib.mkRenamedOptionModuleWith {
      from = [
        "stylix"
        "targets"
        "nixvim"
        "transparent_bg"
        "sign_column"
      ];
      sinceRelease = 2411;

      to = [
        "stylix"
        "targets"
        "nixvim"
        "transparentBackground"
        "signColumn"
      ];
    })
  ];

  config = lib.mkMerge [
    {
      lib.stylix.nixvim.config = pluginConfigs.${cfg.plugin};
    }
    (lib.mkIf (config.stylix.enable && cfg.enable && options.programs ? nixvim) (
      lib.optionalAttrs (options.programs ? nixvim) {
        programs.nixvim = config.lib.stylix.nixvim.config;
      }
    ))
  ];
}