diff --git a/.github/workflows/build.yaml b/.github/workflows/build.yaml
index 6025163..22476b7 100644
--- a/.github/workflows/build.yaml
+++ b/.github/workflows/build.yaml
@@ -3,5 +3,10 @@ on: push
 jobs:
   checks:
     uses: nixbuild/nixbuild-action/.github/workflows/ci-workflow.yml@v19
+    with:
+      nix_conf: |
+        allow-import-from-derivation = true
+      filter_builds: |
+        '.top_attr == "checks" and .system == "x86_64-linux"'
     secrets:
       nixbuild_token: ${{ secrets.nixbuild_token }}
diff --git a/flake.nix b/flake.nix
index b5cf82c..4a83e42 100644
--- a/flake.nix
+++ b/flake.nix
@@ -103,17 +103,17 @@
                   ./test/modules/arr.nix
                   ./test/modules/davfs.nix
                   # TODO: Make this not use IFD
-                  # ./test/modules/lib.nix
+                  ./test/modules/lib.nix
                   ./test/modules/nginx.nix
                   ./test/modules/postgresql.nix
                 ]);
             };
 
             # TODO: Make this not use IFD
-            # lib = nix-flake-tests.lib.check {
-            #   inherit pkgs;
-            #   tests = pkgs.callPackage ./test/modules/lib.nix {};
-            # };
+            lib = nix-flake-tests.lib.check {
+              inherit pkgs;
+              tests = pkgs.callPackage ./test/modules/lib.nix {};
+            };
           }
           // (vm_test "arr" ./test/services/arr.nix)
           // (vm_test "audiobookshelf" ./test/services/audiobookshelf.nix)