{ pkgs, ... }:
let
  indent = {
    tab-width = 2;
    unit = "  ";
  };
  auto-format = true;
in {
  programs.helix = with pkgs; {
    languages = {
      language = let prettier = nodePackages_latest.prettier;
      in [
        { # NIX LSP
          name = "nix";
          language-servers = [ "nixd" ];
          formatter.command = "${nixfmt-classic}/bin/nixfmt";
          indent = indent;
          inherit auto-format;
        }
        { # FISH LSP
          name = "fish";
          language-servers = [ "fish_indent" ];
          inherit auto-format;
          formatter.command = "${fish}/bin/fish_indent";
          indent = indent;
        }
        { # HTML
          name = "html";
          language-servers = [ "vscode-html-language-server" ];
          inherit auto-format;
          formatter = {
            command = "${prettier}/bin/prettier";
            args = [ "--use-tabs" "--parser" "html" ];
          };
        }
        { # JSON
          name = "json";
          language-servers = [ "vscode-json-language-server" ];
          inherit auto-format;
          formatter = {
            command = "${prettier}/bin/prettier";
            args = [ "--use-tabs" "--parser" "json" ];
          };
        }
        { # JSON
          name = "jsonc";
          language-servers = [ "vscode-json-language-server" ];
          inherit auto-format;
          formatter = {
            command = "${prettier}/bin/prettier";
            args = [ "--use-tabs" "--parser" "json" ];
          };
        }
        { # CSS
          name = "css";
          language-servers = [ "vscode-css-language-server" ];
          inherit auto-format;
          formatter = {
            command = "${prettier}/bin/prettier";
            args = [ "--use-tabs" "--parser" "css" ];
          };
        }
        { # MARKDOWN
          name = "markdown";
          language-servers = [ "marksman" ];
          inherit auto-format;
          formatter = {
            command = "${prettier}/bin/prettier";
            args = [ "--use-tabs" "--parser" "markdown" ];
          };
        }
        { # TYPESCRIP
          name = "typescript";
          language-servers = [ "typescript" ];
          inherit auto-format;
          formatter = {
            command = "${prettier}/bin/prettier";
            args = [ "--use-tabs" "--parser" "typescript" ];
          };
        }
      ];
      language-server = let vscode = vscode-langservers-extracted;
      in {
        nixd = { command = "${nixd}/bin/nixd"; };
        fish_indent = { command = "${fish}/bin/fish_indent"; };
        vscode-html-language-server = {
          command = "${vscode}/bin/vscode-html-language-server";
        };
        vscode-json-language-server = {
          command = "${vscode}/bin/vscode-json-language-server";
        };
        vscode-css-language-server = {
          command = "${vscode}/bin/vscode-css-language-server";
        };
        marksman = { command = "${marksman}/bin/marksman"; };
        typescript = {
          command =
            "${typescript-language-server}/bin/typescript-language-server";
        };
      };
    };
    extraPackages = with pkgs; [
      # OTHER LSP
      yaml-language-server
      lua-language-server
      taplo
    ];
  };
}