higher-order defun

flake.nix

@@ -16,15 +16,23 @@
         "x86_64-darwin" "x86_64-linux"
       ];
 
+
       overlays = [
         haskellNix.overlay
+        (final: prev: {
+          gyehoek-wasmtime-wrapper = final.callPackage ./wasmtime.nix {};
+        })
         (final: prev: {
           gyehoek = final.haskell-nix.project' {
             src = ./.;
             compiler-nix-name = "ghc912";
             modules = [({ pkgs, lib, ...}: {
               packages.gyehoek.components.tests.test.preCheck =
-                let bin = [pkgs.wasmtime pkgs.git];
+                let
+                  bin = [
+                    pkgs.gyehoek-wasmtime-wrapper
+                    pkgs.git
+                  ];
                 in ''
                   # Wasmtime requires a cache in $HOME. This is less
                   # painful than reconfiguring the cache location.
@@ -44,10 +52,10 @@
                 self.packages.${final.stdenv.hostPlatform.system}.shake
                 final.wabt
                 final.nodejs
-                final.wasmtime
                 final.wasm-tools
                 final.wac-cli
                 final.guile
+                final.gyehoek-wasmtime-wrapper
               ];
             };
           };