nix-dotfiles/programs/kakoune.nix

{
  enable = true;
  defaultEditor = true;
  config = {
    colorScheme = "tomorrow-night";
    numberLines = {
      enable = true;
      highlightCursor = true;
    };
    hooks = [
      {
        # When the filetype=latex option is set in a buffer context (automatically), add a new hook to build the latex file on write
        name = "BufSetOption";
        option = "filetype=latex";
        commands = "hook buffer BufWritePost .* %{ texlab-build }";
      }
    ];
    keyMappings = [
        # Define usermode yank/copy and paste
        {
            key = "y";
            mode = "user";
            effect = "<a-|> wl-copy<ret>";
        }
        {
            key = "p";
            mode = "user";
            effect = "<a-!> wl-paste<ret>;d"; # ;d at the end since newline inserted
        }
        {
            key = "P";
            mode = "user";
            effect = "! wl-paste<ret>;d"; # ;d at the end since newline inserted
        }
    ];
  };
  extraConfig = ''
    # highlight trailing whitespace
    add-highlighter global/trailing-whitespace regex '\h+$' 0:Error

    # don't remove trailing indent
    set global disabled_hooks .*-trim-indent

    eval %sh{kak-lsp --kakoune -s $kak_session}
    lsp-enable
  '';
}