home-manager/helix/languages.nix

{
  pkgs,
  lib,
  ...
}: {
  programs.helix.languages = {
    language = [
      {
        name = "bash";
        auto-format = false;
        formatter = {
          command = "${pkgs.shfmt}/bin/shfmt";
          args = ["-i" "2"];
        };
      }
    ];
    language-server = {
      bash-language-server = {
        command = "${pkgs.nodePackages.bash-language-server}/bin/bash-language-server";
        args = ["start"];
      };

      clangd = {
        command = "${pkgs.clang-tools}/bin/clangd";
        clangd.fallbackFlags = ["-std=c++2b"];
      };

      nil = {
        command = lib.getExe pkgs.nil;
        config.nil.formatting.command = ["${lib.getExe pkgs.alejandra}" "-q"];
      };

      texlab = {
        command = "${pkgs.texlab}/bin/texlab";
        config.texlab.executable = "${pkgs.tectonic}/bin/tectonic";
        config.texlab.build.onSave = true;
        config.texlab.args = [
          "-X"
          "compile"
          "%f"
          "--keep-logs"
          "--keep-intermediates"
        ];
      };
    };
  };
}