inherit (lib) enabled const genAttrs mkIf;

  inherit (lib) enabled const genAttrs mkIf elem mapAttrs optionalAttrs attrValues;

  environment.shellAliases = {
    nvim = "echo 'no more neovim, use hx'";
    nv   = "echo 'no more neovim, use hx'";
    vim  = "echo 'no more vim, use hx'";
    v    = "echo 'no more vim, use hx'";
    h    = "hx";
    e    = "hx"; # editor
  };
  environment.systemPackages = mkIf config.isDesktop [
    # rust-analyzer is in modules/common/rust.nix
    # TypeScript etc.
    pkgs.deno

    # Nix
    pkgs.nixd
    # YAML
    pkgs.yaml-language-server
    # Svelte
    pkgs.svelte-language-server
    # Markdown
    pkgs.mdformat
  ];

      insert = "block";
      normal = "block";

    settings.editor.statusline.mode = {
      insert = "INSERT";
      normal = "NORMAL";
      select = "SELECT";
    };

    languages.language = [
      {
        name              = "rust";
        auto-format       = true;
      }
      {
        name              = "typescript";
        auto-format       = true;
        formatter.command = "deno";
        formatter.args    = [ "fmt" "--use-tabs" "--no-semicolons" "--indent-width" "4" "--unstable-component" "--ext" "ts" "-"];

    languages.language = let
      denoFmtLanguages = {
        astro = "astro";  css        = "css";
        html  = "html";   javascript = "js";
        json  = "json";   jsonc      = "jsonc";
        jsx   = "jsx";    markdown   = "md";
        scss  = "scss";   svelte     = "svelte";
        tsx   = "tsx";    typescript = "ts";
        vue   = "vue";    yaml       = "yaml";

      {
        name              = "svelte";

      |> mapAttrs (name: extension: {
        inherit name;

        formatter.args    = [ "fmt" "--use-tabs" "--no-semicolons" "--indent-width" "4" "--unstable-component" "--ext" "svelte" "-"];
      }

        formatter.args    = [ "fmt" "--use-tabs" "--no-semicolons" "--indent-width" "4" "--unstable-component" "--ext" extension "-" ];
      } // optionalAttrs (elem name [ "javascript" "jsx" "typescript" "tsx" ]) {
        language-servers = [ "deno" ];
      })
      |> attrValues;
    in denoFmtLanguages ++ [

        formatter.command = "taplo";

      # I can't get this working right now.
      # {
      #   name               = "rust";
      #   debugger.name      = "lldb-dap";
      #   debugger.transport = "stdio";
      #   debugger.command   = "lldb-dap";
      #   debugger.templates = [{
      #     name         = "binary";
      #     request      = "launch";
      #     args.program = "{0}";
      #     completion   = [{
      #       name       = "binary";
      #       completion = "filename";
      #     }];
      #   }];
      # }

  environment.shellAliases = {
    nvim = "echo 'no more neovim, use hx'";
    nv   = "echo 'no more neovim, use hx'";
    vim  = "echo 'no more vim, use hx'";
    v    = "echo 'no more vim, use hx'";
    h    = "hx";
    e    = "hx"; # editor
  };
  environment.systemPackages = mkIf config.isDesktop [
    # Rust
    # rust-analyzer is in modules/common/rust.nix
    pkgs.lldb
    # Assembler
    pkgs.asm-lsp
    # TypeScript etc.
    pkgs.deno
    # Nix
    pkgs.nixd
    pkgs.alejandra
    # YAML
    pkgs.yaml-language-server
    # JSON
    pkgs.vscode-json-languageserver
    # TOML
    pkgs.taplo
    # Svelte
    pkgs.svelte-language-server
    # Markdown
    pkgs.mdformat
    # Just
    pkgs.just-lsp
    pkgs.just-formatter
  ];