Base16 themes for home manager

This is a messy, personal set of scripts for managing colour schemes within hame manager. I am yet to share it because there are some unprincipled components likely to break (e.g. using sed to read yaml files), and because the build functions it introduces use sizable external dependencies.

I have found aspects of this very nice to use, and have tried to clean it up enough to be suitable for others to adapt. YMMV however.

Usage

N.b. this example roughly reflects my usage, but I haven't tried to use it directly, so there may be typos / bugs

{pkgs, lib, config, ...}:
{
  imports = [ ./base16.nix ];
  config = {

    # Choose your themee
    themes.base16 = {
      enable = true;
      scheme = "solarized";
      variant = "solarized-dark";

      # Add extra variables for inclusion in custom templates
      extraParams = {
        fontname = mkDefault  "Inconsolata LGC for Powerline";
        headerfontname = mkDefault  "Cabin";
        bodysize = mkDefault  "10";
        headersize = mkDefault  "12";
        xdpi= mkDefault ''
          Xft.hintstyle: hintfull
        '';
    };
    };

    # 1. Use pre-provided templates
    ###############################

    programs.bash.initExtra = ''
      source ${config.lib.base16.base16template "shell"}
    '';
    home.file.".vim/colors/mycolorscheme.vim".source =
      config.lib.base16.base16template "vim";

    # 2. Use your own templates
    ###########################

    home.file.".Xresources".source = config.lib.base16.template {
      src = ./examples/Xresources;
    };
    home.file.".xmonad/xmobarrc".source = config.lib.base16.template {
      src = ./examples/xmobarrc;
    };

    # 3. Template strings directly into other home-manager configuration
    ####################################################################

    services.dunst = {
        enable = true;
        settings = with config.lib.base16.theme;
            {
              global = {
                geometry         =  "600x1-800+-3";
                font             = "${headerfontname} ${headersize}";
                icon_path =
                  config.services.dunst.settings.global.icon_folders;
                alignment        = "right";
                frame_width      = 0;
                separator_height = 0;
                sort             = true;
              };
              urgency_low = {
                background = "#${base01-hex}";
                foreground = "#${base03-hex}";
              };
              urgency_normal = {
                background = "#${base01-hex}";
                foreground = "#${base05-hex}";
              };
              urgency_critical = {
                msg_urgency = "CRITICAL";
                background  = "#${base01-hex}";
                foreground  = "#${base08-hex}";
              };
        };
     };


  };
}

Reloading

Changing themes involves switching the theme definitoin and typing home-manager switch. There is no attempt in general to force programs to reload, and not all are able to reload their configs, although I have found that reloading xmonad and occasionally restarting applications has been enough.

You are unlikely to achieve a complet switch without logging out and logging back in again.

Todo

Provide better support for custom schemes (currently this assumes you'll want to use something in the base16 repositories, but there is no reason for this).

Updating Sources

cd into the directory in which the templates.yaml and schemes.yaml are located, and run update_sources.sh