{
  lib,
  pkgs,
  config,
  ...
}: let
  cfg = config.youthlic.programs.helix;
  defaultLanguagesSettings = config.programs.helix.package.passthru.languages.language;
in {
  options = {
    youthlic.programs.helix = {
      enable = lib.mkEnableOption "helix";
      languageSettings = lib.mkOption {
        type = lib.types.attrsOf (lib.types.submodule ({...}: {
          freeformType = lib.types.anything;
          options = {
            language-servers = lib.mkOption {
              type = lib.types.listOf (lib.types.either lib.types.str lib.types.anything);
              default = ["typos-lsp"];
              example = ["rust-analyzer"];
              apply = lib.unique;
            };
          };
        }));
        default = lib.pipe defaultLanguagesSettings [
          (map (lang: lib.nameValuePair lang.name (lib.removeAttrs lang ["name"])))
          lib.listToAttrs
        ];
        apply = lib.mapAttrsToList (name: value: {inherit name;} // value);
      };
      extraPackages = lib.mkOption {
        type = lib.types.listOf lib.types.package;
        default = [];
        example = (
          with pkgs; [
            deno
          ]
        );
        description = ''
          extra packages for helix lsp and formatter
        '';
      };
    };
  };
  config = lib.mkMerge [
    (lib.mkIf cfg.enable {
      programs.helix = {
        enable = true;
        defaultEditor = true;
        extraPackages = cfg.extraPackages;
        settings = ./config.toml |> builtins.readFile |> builtins.fromTOML;
        languages =
          lib.recursiveUpdate
          {
            language-server = {
              neocmakelsp = {
                command = "neocmakelsp";
                args = [
                  "stdio"
                ];
              };
              fish-lsp = {
                command = "fish-lsp";
                args = [
                  "start"
                ];
              };
              ty = {
                command = "ty";
                args = [
                  "server"
                ];
              };
              typos-lsp = {
                command = "typos-lsp";
              };
            };
          }
          {language = cfg.languageSettings;};
      };
    })
    (lib.mkIf cfg.enable {
      youthlic.programs.helix.languageSettings = lib.pipe defaultLanguagesSettings [
        (map ({name, ...}: lib.nameValuePair name {language-servers = ["typos-lsp"];}))
        lib.listToAttrs
      ];
    })
    (lib.mkIf cfg.enable {
      youthlic.programs.helix.languageSettings =
        lib.recursiveUpdate
        (lib.pipe defaultLanguagesSettings [(map (lang: lib.nameValuePair lang.name (lib.removeAttrs lang ["name"]))) lib.listToAttrs])
        {
          cmake = {
            language-servers = [
              "neocmakelsp"
              "cmake-language-server"
            ];
          };
          kdl = {
            formatter = {
              command = "kdlfmt";
              args = [
                "format"
                "-"
              ];
            };
          };
          just = {
            formatter = {
              command = "just";
              args = [
                "--dump"
              ];
            };
          };
          nix = {
            formatter = {
              command = "alejandra";
            };
          };
          xml = {
            formatter = {
              command = "xmllint";
              args = [
                "--format"
                "-"
              ];
            };
          };
          typst = {
            formatter = {
              command = "typstyle";
            };
          };
          c = {
            formatter = {
              command = "clang-format";
            };
          };
          cpp = {
            formatter = {
              command = "clang-format";
            };
          };
          python = {
            formatter = {
              command = "ruff";
              args = [
                "format"
                "-s"
                "--line-length"
                "88"
                "-"
              ];
            };
            language-servers = [
              "pyright"
              "ruff"
              "ty"
            ];
          };
          go = {
            formatter = {
              command = "goimports";
            };
          };
          awk = {
            formatter = {
              command = "awk";
              timeout = 5;
              args = [
                "--file=/dev/stdin"
                "--pretty-print=/dev/stdout"
              ];
            };
          };
          fish = {
            language-servers = [
              "fish-lsp"
            ];
          };
          yaml = {
            formatter = {
              command = "deno";
              args = [
                "fmt"
                "-"
                "--ext"
                "yaml"
              ];
            };
          };
          html = {
            formatter = {
              command = "deno";
              args = [
                "fmt"
                "-"
                "--ext"
                "html"
              ];
            };
            language-servers = [
              "vscode-html-language-server"
            ];
          };
          css = {
            formatter = {
              command = "deno";
              args = [
                "fmt"
                "-"
                "--ext"
                "css"
              ];
            };
            language-servers = [
              "vscode-css-language-server"
            ];
          };
          toml = {
            formatter = {
              command = "taplo";
              args = [
                "fmt"
                "-"
              ];
            };
          };
          markdown = {
            formatter = {
              command = "deno";
              args = [
                "fmt"
                "-"
                "--ext"
                "md"
              ];
            };
          };
          json = {
            language-servers = [
              "vscode-json-language-server"
            ];
            formatter = {
              command = "deno";
              args = [
                "fmt"
                "-"
                "--ext"
                "json"
              ];
            };
          };
          jsonc = {
            language-servers = [
              "vscode-json-language-server"
            ];
            formatter = {
              command = "deno";
              args = [
                "fmt"
                "-"
                "--ext"
                "jsonc"
              ];
            };
          };
        };
    })
  ];
}