diff --git a/crates/templates_scaffolding_utils/src/lib.rs b/crates/templates_scaffolding_utils/src/lib.rs
index ab337d5..4efd442 100644
--- a/crates/templates_scaffolding_utils/src/lib.rs
+++ b/crates/templates_scaffolding_utils/src/lib.rs
@@ -240,6 +240,9 @@ pub fn register_case_helpers<'a>(mut h: Handlebars<'a>) -> Handlebars<'a> {
     handlebars_helper!(pascal_case: |s: String| s.to_case(Case::Pascal));
     h.register_helper("pascal_case", Box::new(pascal_case));
 
+    handlebars_helper!(flat_case: |s: String| s.to_case(Case::Flat));
+    h.register_helper("flat_case", Box::new(flat_case));
+
     h
 }
 
diff --git a/nix/fixtures/module-repo/flake.lock b/nix/fixtures/module-repo/flake.lock
index efabcbe..d7e9173 100644
--- a/nix/fixtures/module-repo/flake.lock
+++ b/nix/fixtures/module-repo/flake.lock
@@ -643,7 +643,7 @@
       },
       "locked": {
         "lastModified": 0,
-        "narHash": "sha256-VsYv4zgXo8yKNnjGuoq/iQS7kxAxCMdCWtFllG+2gq4=",
+        "narHash": "sha256-p7uspks0Vhdl1MYj79ktshTlX2f8jaBNKaxnAbhiQBg=",
         "path": "../../..",
         "type": "path"
       },
diff --git a/nix/zome.nix b/nix/zome.nix
index d1b8d29..f5ee1c5 100644
--- a/nix/zome.nix
+++ b/nix/zome.nix
@@ -18,6 +18,11 @@ let
   };
 
   cargoVendorDir = craneLib.vendorMultipleCargoDeps {
+    cargoConfigs = [
+      (builtins.trace
+        (zomeCargoDeps { inherit craneLib; }).cargoVendorDir.outPath
+        ((zomeCargoDeps { inherit craneLib; }).cargoVendorDir + ./config.toml))
+    ];
     cargoLockList =
       [ ./reference-happ/Cargo.lock (workspacePath + /Cargo.lock) ];
   };
@@ -25,7 +30,6 @@ let
   wasm = craneLib.buildPackage (commonArgs // {
     cargoArtifacts = (zomeCargoDeps { inherit craneLib; }).cargoArtifacts;
     inherit cargoVendorDir;
-    # = (zomeCargoDeps { inherit craneLib; }).cargoVendorDir;
   });
 
   deterministicWasm = let