diff --git a/plugins/languages/rust/rust-tools.nix b/plugins/languages/rust/rust-tools.nix
index 3b1bbd6e..b73ea5e4 100644
--- a/plugins/languages/rust/rust-tools.nix
+++ b/plugins/languages/rust/rust-tools.nix
@@ -123,7 +123,7 @@ in
         standalone file support
         setting it to false may improve startup time
       '';
-    }; # // (import ../../lsp/language-servers/rust-analyzer-config.nix lib pkgs);
+    } // (import ../../lsp/language-servers/rust-analyzer-config.nix lib helpers);
   };
   config = mkIf cfg.enable {
     extraPlugins = with pkgs.vimPlugins; [
diff --git a/plugins/languages/rust/rustaceanvim/settings-options.nix b/plugins/languages/rust/rustaceanvim/settings-options.nix
index 45fe0b30..b135ca46 100644
--- a/plugins/languages/rust/rustaceanvim/settings-options.nix
+++ b/plugins/languages/rust/rustaceanvim/settings-options.nix
@@ -257,8 +257,7 @@ with lib;
     settings =
       helpers.mkNullOrStrLuaFnOr
         (types.submodule {
-          # options = import ../../../lsp/language-servers/rust-analyzer-config.nix lib pkgs;
-          options = { };
+          options = import ../../../lsp/language-servers/rust-analyzer-config.nix lib helpers;
           freeformType = with types; attrsOf anything;
         })
         ''
diff --git a/plugins/lsp/language-servers/default.nix b/plugins/lsp/language-servers/default.nix
index 693bf7f2..ec15c618 100644
--- a/plugins/lsp/language-servers/default.nix
+++ b/plugins/lsp/language-servers/default.nix
@@ -488,7 +488,7 @@ let
       description = "rust-analyzer for Rust";
       serverName = "rust_analyzer";
 
-      # settingsOptions = import ./rust-analyzer-config.nix lib pkgs;
+      settingsOptions = import ./rust-analyzer-config.nix lib helpers;
       settings = cfg: { rust-analyzer = cfg; };
     }
     {
diff --git a/plugins/lsp/language-servers/rust-analyzer-config.nix b/plugins/lsp/language-servers/rust-analyzer-config.nix
index 80f2f61b..17362cc4 100644
--- a/plugins/lsp/language-servers/rust-analyzer-config.nix
+++ b/plugins/lsp/language-servers/rust-analyzer-config.nix
@@ -1,167 +1,69 @@
-lib: pkgs:
-# Future improvements:
-#   - extra documentation from anyOf types, they can have `enumDescriptions` that are valuable
-with lib;
+# TODO: make all the types support raw lua
+lib: helpers:
 let
-  packageJson = "${pkgs.rust-analyzer.src}/editors/code/package.json";
-
-  options = (trivial.importJSON packageJson).contributes.configuration.properties;
-
-  packageJsonTxt = strings.splitString "\n" (builtins.readFile packageJson);
-  vscodeStart = lists.findFirstIndex (
-    x: x == "        \"configuration\": {"
-  ) (throw "no configuration") packageJsonTxt;
-  vscodeEnd =
-    lists.findFirstIndex (strings.hasInfix "generated-start") (throw "no generated start")
-      packageJsonTxt;
-  vscodeOptions = lists.sublist vscodeStart (vscodeEnd - vscodeStart) packageJsonTxt;
-
-  vscodeOptionNames = builtins.map (
-    x: strings.removeSuffix "\": {" (strings.removePrefix "                \"" x)
-  ) (lists.filter (strings.hasPrefix "                \"rust-analyzer.") vscodeOptions);
-
-  rustAnalyzerOptions = builtins.removeAttrs options (
-    vscodeOptionNames
-    ++ [
-      "\$generated-start"
-      "\$generated-end"
-    ]
-  );
-
-  nullType = mkOptionType {
-    name = "nullType";
-    description = "null";
-    descriptionClass = "noun";
-    merge = mergeEqualOption;
-    check = e: e == null;
-  };
+  rustAnalyzerOptions = import ../../../generated/rust-analyzer.nix;
 
   mkRustAnalyzerType =
-    opt:
-    {
-      type,
-      enum ? null,
-      minimum ? null,
-      maximum ? null,
-      items ? null,
-      anyOf ? null,
-      uniqueItems ? null,
-      # unused, but for exhaustivness
-      enumDescriptions ? null,
-    }@def:
-    if enum != null then
-      types.enum enum
-    else if anyOf != null then
-      types.oneOf (builtins.map (mkRustAnalyzerType opt) anyOf)
-    else if builtins.isList type then
-      if builtins.length type == 2 && builtins.head type == "null" then
-        types.nullOr (mkRustAnalyzerType opt (def // { type = builtins.elemAt type 1; }))
-      else
-        types.oneOf (builtins.map (t: mkRustAnalyzerType opt (def // { type = t; })) type)
-    else if type == "boolean" then
-      types.bool
-    else if type == "object" then
-      types.attrsOf types.anything
-    else if type == "string" then
-      types.str
-    else if type == "null" then
-      nullType
-    else if type == "array" then
-      types.listOf (
-        mkRustAnalyzerType "${opt}-items" (
-          if items == null then throw "null items with array type (in ${opt})" else items
-        )
-      )
-    else if type == "number" then
+    { kind, ... }@typeInfo:
+    if kind == "enum" then
+      lib.types.enum typeInfo.values
+    else if kind == "oneOf" then
+      lib.types.oneOf (lib.map mkRustAnalyzerType typeInfo.subTypes)
+    else if kind == "list" then
+      lib.types.listOf (mkRustAnalyzerType typeInfo.item)
+    else if kind == "number" then
+      let
+        inherit (typeInfo) minimum maximum;
+      in
       if minimum != null && maximum != null then
-        types.numbers.between minimum maximum
+        lib.types.numbers.between minimum maximum
       else if minimum != null then
-        types.addCheck types.number (x: x >= minimum)
+        lib.types.addCheck lib.types.number (x: x >= minimum)
       else if maximum != null then
-        types.addCheck types.number (x: x <= maximum)
+        lib.types.addCheck lib.types.number (x: x <= maximum)
       else
-        types.number
-    else if type == "integer" then
+        lib.types.number
+    else if kind == "integer" then
+      let
+        inherit (typeInfo) minimum maximum;
+      in
       if minimum != null && maximum != null then
-        types.ints.between minimum maximum
+        lib.types.ints.between minimum maximum
       else if minimum != null then
-        types.addCheck types.int (x: x >= minimum)
+        lib.types.addCheck lib.types.int (x: x >= minimum)
       else if maximum != null then
-        types.addCheck types.int (x: x <= maximum)
+        lib.types.addCheck lib.types.int (x: x <= maximum)
       else
-        types.int
+        lib.types.int
+    else if kind == "object" then
+      lib.types.attrsOf lib.types.anything
+    else if kind == "string" then
+      lib.types.str
+    else if kind == "boolean" then
+      lib.types.bool
     else
-      throw "unhandled type `${builtins.toJSON type}` (in ${opt})";
+      throw "Unknown type: ${kind}";
 
-  mkRustAnalyzerOption =
-    opt:
+  mkNixOption =
     {
-      default,
-      markdownDescription,
-      type ? null,
-      anyOf ? null,
-      # Enum types
-      enum ? null,
-      enumDescriptions ? null,
-      # Int types
-      minimum ? null,
-      maximum ? null,
-      # List types
-      items ? null,
-      uniqueItems ? false,
+      description,
+      pluginDefault,
+      type,
     }:
-    mkOption {
-      type = types.nullOr (
-        mkRustAnalyzerType opt {
-          inherit
-            type
-            enum
-            minimum
-            maximum
-            items
-            anyOf
-            uniqueItems
-            ;
-        }
-      );
-      default = null;
-      description =
-        if enum != null then
-          let
-            valueDesc = builtins.map ({ fst, snd }: ''- ${fst}: ${snd}'') (
-              lists.zipLists enum enumDescriptions
-            );
-          in
-          ''
-            ${markdownDescription}
-
-            Values:
-            ${builtins.concatStringsSep "\n" valueDesc}
-
-            ```nix
-            ${generators.toPretty { } default}
-            ```
-          ''
-        else
-          ''
-            ${markdownDescription}
-
-            default:
-            ```nix
-            ${generators.toPretty { } default}
-            ```
-          '';
+    helpers.defaultNullOpts.mkNullable' {
+      inherit description pluginDefault;
+      type = mkRustAnalyzerType type;
     };
 
-  nixOptions = builtins.mapAttrs mkRustAnalyzerOption rustAnalyzerOptions;
-
   nestOpt =
     opt: value:
     let
-      parts = strings.splitString "." opt;
+      parts = lib.strings.splitString "." opt;
     in
-    builtins.foldl' (current: segment: { ${segment} = current; }) value (lists.reverseList parts);
+    lib.setAttrByPath parts value;
 
-  nestedNixOptions = attrsets.mapAttrsToList nestOpt nixOptions;
+  nestedNixOptions = lib.attrsets.mapAttrsToList (
+    name: value: nestOpt name (mkNixOption value)
+  ) rustAnalyzerOptions;
 in
-(builtins.foldl' attrsets.recursiveUpdate { } nestedNixOptions).rust-analyzer
+(builtins.foldl' lib.attrsets.recursiveUpdate { } nestedNixOptions).rust-analyzer