neovimUtils.makeVimPackageInfo: add lua dependencies (#500415)

pkgs/applications/editors/neovim/module.nix

@@ -93,6 +93,14 @@ in
       '';
     };
 
+    luaDependencies = lib.mkOption {
+      readOnly = true;
+      type = lib.types.listOf (lib.types.nullOr lib.types.package);
+      example = lib.literalExpression "[ (lp: [ lp.mpack ]) ]";
+      description = ''
+        Lua dependencies required by the plugins.
+      '';
+    };
   };
 
   config =
@@ -122,5 +130,11 @@ in
       ) [ ] pluginsNormalized;
 
       pluginPython3Packages = map (plugin: plugin.python3Dependencies or (_: [ ])) pluginsNormalized;
+
+      luaDependencies =
+        let
+          op = acc: p: acc ++ (p.plugin.requiredLuaModules or [ ]);
+        in
+        lib.foldl' op [ ] pluginsNormalized;
     };
 }

pkgs/applications/editors/neovim/utils.nix

@@ -112,6 +112,7 @@ let
         runtimeDeps
         pluginAdvisedLua
         pluginPython3Packages
+        luaDependencies
         ;
 
       # A Vim "package", see ':h packages'

pkgs/applications/editors/neovim/wrapper.nix

@@ -109,7 +109,7 @@ let
 
         luaPathLuaRc =
           let
-            luaEnv = lua.withPackages extraLuaPackages;
+            luaEnv = lua.withPackages (lp: extraLuaPackages lp ++ vimPackageInfo.luaDependencies);
 
             # getLuaPath / getLuaCPath are not interpreter dependant at the moment and might thus cause
             # errors between luajit/Puc lua