zephyr: Put modules in a subdirectory so zephyr doesn't get mad

packages/zephyr/default.nix

@@ -2,6 +2,7 @@
 let
   assets = lib.importJSON ./assets.json;
   modules = lib.importJSON ./modules.json;
+  buildModule = module: callPackage ./module.nix { inherit module; };
 in {
   host-tools = callPackage ./host-tools.nix {
     inherit (assets) version hosts;
@@ -20,5 +21,5 @@ in {
   };
 
   src = fetchFromGitHub modules.zephyr;
-  modules = lib.mapAttrs (_: fetchFromGitHub) modules.modules;
+  modules = lib.mapAttrs (_: buildModule) modules.modules;
 }

packages/zephyr/module.nix

@@ -0,0 +1,17 @@
+{ stdenvNoCC, fetchFromGitHub, version ? null, module }:
+let src = fetchFromGitHub module;
+in stdenvNoCC.mkDerivation (finalAttrs: {
+  name = if version != null then
+    "${module.name}-wrapped-${version}"
+  else
+    "${module.name}-wrapped";
+
+  passthru.modulePath = "${finalAttrs.finalPackage.out}/${module.name}";
+
+  passAsFile = [ "buildCommand" ];
+  buildCommand = ''
+    mkdir -p $out
+    ln -s "${src}" "$out/${module.name}"
+  '';
+})
+

shells/zephyr/default.nix

@@ -29,5 +29,6 @@ in mkShell ({
     PATH="${zephyrSrc}/scripts:$PATH"
   '';
 } // lib.optionalAttrs (modules != [ ]) {
-  ZEPHYR_MODULES = lib.concatStringsSep ";" (map (pkg: pkg.out) modules);
+  ZEPHYR_MODULES =
+    lib.concatStringsSep ";" (map (pkg: pkg.passthru.modulePath) modules);
 } // extraAttrs)