diff --git a/pkgs/applications/editors/vscode/extensions/reditorsupport.r/default.nix b/pkgs/applications/editors/vscode/extensions/reditorsupport.r/default.nix
index 85359d2a95ca..592b09d7903e 100644
--- a/pkgs/applications/editors/vscode/extensions/reditorsupport.r/default.nix
+++ b/pkgs/applications/editors/vscode/extensions/reditorsupport.r/default.nix
@@ -3,8 +3,11 @@
   vscode-utils,
   jq,
   moreutils,
-  python311Packages,
+  languageserver ? rPackages.languageserver,
   R,
+  radian ? python311Packages.radian,
+
+  python311Packages,
   rPackages,
 }:
 
@@ -19,17 +22,13 @@ vscode-utils.buildVscodeMarketplaceExtension {
     jq
     moreutils
   ];
-  buildInputs = [
-    python311Packages.radian
-    R
-    rPackages.languageserver
-  ];
   postInstall = ''
     cd "$out/$installPrefix"
     jq '.contributes.configuration.properties."r.rpath.mac".default = "${lib.getExe' R "R"}"' package.json | sponge package.json
     jq '.contributes.configuration.properties."r.rpath.linux".default = "${lib.getExe' R "R"}"' package.json | sponge package.json
-    jq '.contributes.configuration.properties."r.rterm.mac".default = "${lib.getExe python311Packages.radian}"' package.json | sponge package.json
-    jq '.contributes.configuration.properties."r.rterm.linux".default = "${lib.getExe python311Packages.radian}"' package.json | sponge package.json
+    jq '.contributes.configuration.properties."r.rterm.mac".default = "${lib.getExe radian}"' package.json | sponge package.json
+    jq '.contributes.configuration.properties."r.rterm.linux".default = "${lib.getExe radian}"' package.json | sponge package.json
+    jq '.contributes.configuration.properties."r.libPaths".default = [ "${languageserver}/library" ]' package.json | sponge package.json
   '';
   meta = {
     changelog = "https://marketplace.visualstudio.com/items/REditorSupport.r/changelog";