fix: 💚 Fix the Nix build, remove dependency on PNPM

nix/package-worker.nix

@@ -2,14 +2,8 @@
 {versia-server, ...}:
 versia-server.overrideAttrs (oldAttrs: {
   pname = "${oldAttrs.pname}-worker";
-  buildPhase = ''
-    runHook preBuild
 
-    bun run packages/worker/build.ts
-
-    runHook postBuild
-  '';
-  entrypointPath = "packages/worker/index.js";
+  buildType = "worker";
 
   meta =
     oldAttrs.meta

nix/package.nix

@@ -5,10 +5,8 @@
   nodejs,
   vips,
   makeWrapper,
-  fetchBunDeps,
-  bunConfigHook,
-  bunInstallHook,
-  bunBuildHook,
+  stdenvNoCC,
+  writableTmpDirAsHomeHook,
   ...
 }: let
   packageJson = builtins.fromJSON (builtins.readFile ../package.json);
@@ -19,23 +17,70 @@ in
 
     src = ../.;
 
-    bunOfflineCache = fetchBunDeps {
-      bunLock = finalAttrs.src + "/bun.lock";
-      hash = "sha256-8R+LzgqAiqRGCMDBw2R7QO6hbdNrtIwzSjR3A8xhfVw=";
-    };
+    node_modules = stdenvNoCC.mkDerivation {
+      pname = "${finalAttrs.pname}-node_modules";
+      inherit (finalAttrs) version src;
 
-    bunBuildScript = "packages/api/build.ts";
+      nativeBuildInputs = [
+        bun
+        nodejs
+        writableTmpDirAsHomeHook
+      ];
+
+      dontConfigure = true;
+
+      buildPhase = ''
+        runHook preBuild
+
+         export BUN_INSTALL_CACHE_DIR=$(mktemp -d)
+
+         bun install \
+           --force \
+           --frozen-lockfile \
+           --no-progress
+
+        runHook postBuild
+      '';
+
+      installPhase = ''
+        runHook preInstall
+
+        mkdir -p $out/node_modules
+        cp -R ./node_modules $out
+
+        runHook postInstall
+      '';
+
+      # Required else we get errors that our fixed-output derivation references store paths
+      dontFixup = true;
+
+      outputHash = "sha256-/RQv87hjLdH6+41yR7+bGp3j200DVhIrKWoI1MKIqJs=";
+      outputHashAlgo = "sha256";
+      outputHashMode = "recursive";
+    };
 
     nativeBuildInputs = [
       bun
-      nodejs
       makeWrapper
-      bunConfigHook
-      bunInstallHook
-      bunBuildHook
     ];
 
-    entrypointPath = "packages/api/index.js";
+    configurePhase = ''
+      runHook preConfigure
+
+      cp -R ${finalAttrs.node_modules}/node_modules .
+
+      runHook postConfigure
+    '';
+
+    buildPhase = ''
+      runHook preBuild
+
+      bun run build ${finalAttrs.buildType}
+
+      runHook postBuild
+    '';
+
+    buildType = "api";
 
     installPhase = let
       libPath = lib.makeLibraryPath [
@@ -53,7 +98,7 @@ in
       cp -r dist $out/${finalAttrs.pname}
 
       makeWrapper ${lib.getExe bun} $out/bin/${finalAttrs.pname} \
-        --add-flags "run $out/${finalAttrs.pname}/${finalAttrs.entrypointPath}" \
+        --add-flags "run $out/${finalAttrs.pname}/${finalAttrs.buildType}.js" \
         --set NODE_PATH $out/${finalAttrs.pname}/node_modules \
         --set MSGPACKR_NATIVE_ACCELERATION_DISABLED true \
         --prefix PATH : ${binPath} \