modules/lsp: enable servers."*" by default

modules/lsp/default.nix

@@ -93,6 +93,8 @@ in
             type = types.submodule (
               lib.modules.importApply ./server-base.nix {
                 displayName = "all servers";
+                enable.name = "the `*` server config";
+                enable.default = true;
                 settings.extraDescription = ''
                   Will be merged by neovim using the behaviour of [`vim.tbl_deep_extend()`](https://neovim.io/doc/user/lua.html#vim.tbl_deep_extend()).
                 '';
@@ -123,15 +125,12 @@ in
       '';
       default = { };
       example = {
-        "*" = {
-          enable = true;
-          settings = {
+        "*".settings = {
           root_markers = [ ".git" ];
           capabilities.textDocument.semanticTokens = {
             multilineTokenSupport = true;
           };
         };
-        };
         luals.enable = true;
         clangd = {
           enable = true;

modules/lsp/server-base.nix

@@ -2,6 +2,7 @@
 {
   displayName ? "the language server",
   settings ? null,
+  enable ? null,
 }:
 { lib, ... }:
 let
@@ -9,7 +10,12 @@ let
 in
 {
   options = {
-    enable = lib.mkEnableOption displayName;
+    enable = lib.mkOption rec {
+      type = types.bool;
+      description = "Whether to enable ${enable.name or displayName}. ${enable.extraDescription or ""}";
+      default = enable.default or false;
+      example = enable.example or (!default);
+    };
 
     settings = lib.mkOption {
       type = with types; attrsOf anything;

tests/test-sources/modules/lsp.nix

@@ -1,16 +1,13 @@
 {
   example = {
     lsp.servers = {
-      "*" = {
-        enable = true;
-        settings = {
+      "*".settings = {
         enable = true;
         root_markers = [ ".git" ];
         capabilities.textDocument.semanticTokens = {
           multilineTokenSupport = true;
         };
       };
-      };
       luals.enable = true;
       clangd = {
         enable = true;