diff --git a/overlay.nix b/overlay.nix
index 280611b..4a7cf1e 100644
--- a/overlay.nix
+++ b/overlay.nix
@@ -24,10 +24,17 @@ in
       version = "2.18.3-lix${versionSuffix}";
       VERSION_SUFFIX = "-lix${versionSuffix}";
 
+      # We only include CMake so that Meson can locate toml11, which only ships CMake dependency metadata.
+      dontUseCmakeConfigure = true;
+
       patches = [ ];
-      # FIXME: we don't know why this was not being picked up properly when
-      # included in nativeCheckInputs.
-      nativeBuildInputs = old.nativeBuildInputs or [ ] ++ [ final.git ];
+      nativeBuildInputs = old.nativeBuildInputs or [ ] ++ [
+        final.cmake
+        final.toml11
+        # FIXME: we don't know why this was not being picked up properly when
+        # included in nativeCheckInputs.
+        final.git
+      ];
     });
     stable = nix_2_18;
     nix_2_18_upstream = prev.nixVersions.nix_2_18;