My NixOS setup for Helix

README.md

Helix setup for NixOS

The following files provide my setup for Helix on NixOS. I find it to be a nice experience (for me) when compared to the alternatives

default.nix

_: {
  imports = [ ../language-servers ];

# programs.helix = {
#   enable = true;
#   settings = {
#     theme = "autumn_night_transparent";
#     editor.cursor-shape = {
#       normal = "block";
#       insert = "bar";
#       select = "underline";
#     };
#   };
#   languages.language = [{
#     name = "nix";
#     auto-format = true;
#     formatter.command = "${pkgs.nixfmt}/bin/nixfmt";
#   }];
#   themes = {
#     autumn_night_transparent = {
#       "inherits" = "autumn_night";
#       "ui.background" = { };
#     };
#   };
# };

  programs.helix = {
    enable = true;
    settings = {
      theme = "tokyonight_storm";
      editor = {
        line-number = "relative";
        cursorline = true;
        scrolloff = 5;
        color-modes = true;
        idle-timeout = 1;
        true-color = true;
        # rainbow-brackets = true;
        bufferline = "always";
        rulers = [ 100 ];
        popup-border = "all";
        soft-wrap.enable = true;
        completion-replace = true;

        # sticky-context = {
        #   enable = true;
        #   indicator = false;
        # };

        lsp = {
          display-messages = true;
          display-inlay-hints = true;
        };

        # inline-diagnostics = {
        #   cursor-line = "hint";
        #   other-lines = "error";
        # };

        whitespace.render = "all";
        whitespace.characters = {
          space = "·";
          nbsp = "⍽";
          tab = "→";
          newline = "⤶";
        };

        gutters = [ "diagnostics" "line-numbers" "spacer" "diff" ];
        statusline = {
          separator = "of";
          left = [
            "mode"
            "selections"
            "file-type"
            "register"
            "spinner"
            "diagnostics"
          ];
          center = [ "file-name" ];
          right = [
            "file-encoding"
            "file-line-ending"
            "position-percentage"
            "spacer"
            "separator"
            "total-line-numbers"
          ];
          mode = {
            normal = "NORMAL";
            insert = "INSERT";
            select = "SELECT";
          };
        };
        indent-guides = {
          render = true;
          rainbow-option = "normal";
        };
      };

      keys.normal = {
        "X" = "extend_line_above";
        "C-q" = ":bc";
        "C-d" = [ "half_page_down" "align_view_center" ];
        "C-u" = [ "half_page_up" "align_view_center" ];
      };

      keys.normal."\\" = { "t" = [ ":vs ~/todo.md" ]; };
    };
  };
}

language-servers.nix

# rename and place at language-servers/default.nix
{ pkgs, system, ... }: {
  home.packages = with pkgs; [
    # Formatting
    alejandra

    # Debugging stuff
    lldb

    # Language servers
    clang-tools # C-Style
    # cmake-language-server # Cmake, pray to never need to use it
    gopls # Go
    nil # Nix
    rust-analyzer # Rust
    texlab # LaTeX
    zls # Zig
    # elixir_ls # Elixir
    # clojure-lsp # Clojure

    # haskellPackages.haskell-language-server # Haskell

    nodePackages.typescript-language-server # Typescript
    nodePackages.vim-language-server # Vim
    nodePackages.yaml-language-server # YAML / JSON

    luajitPackages.lua-lsp # Lua
    python313Packages.python-lsp-server
    nil
    gopls
    nodePackages.typescript-language-server
    nodePackages.prettier
    nodePackages.bash-language-server
    shfmt
    gleam

  #  helix-gpt # Copilot
  ];
  #  ++ (if system == "x86_64-linux" then [ols] else []); # Odin!

  # xdg.configFile."zls.json".text = builtins.toJSON {
  #   "$schema" =
  #     "https://raw.githubusercontent.com/zigtools/zls/master/schema.json";
  #   enable_ast_check_diagnostics = true;
  #   enable_autofix = true;
  #   enable_import_embedfile_argument_completions = true;
  #   enable_inlay_hints = true;
  #   inlay_hints_hide_redundant_param_names = true;
  #   inlay_hints_hide_redundant_param_names_last_token = true;
  #   enable_semantic_tokens = true;
  #   enable_snippets = true;
  #   max_detail_length = 104857;
  #   operator_completions = true;
  #   use_comptime_interpreter = true;
  #   warn_style = true;
  #   include_at_in_builtins = true;
  #   zig_exe_path = "${pkgs.zigpkgs.master.outPath}/bin/zig";
  # };
}