Karakeep uses a specific version of pnpm and will fail to build with other pnpm
versions. Instead of adding this pnpm version to nixpkgs, we override this
requirement.

---
--- a/package.json
+++ b/package.json
@@ -32,7 +32,7 @@
     "turbo": "^2.1.2"
   },
   "prettier": "@karakeep/prettier-config",
-  "packageManager": "pnpm@9.15.9",
+  "packageManager": "pnpm",
   "pnpm": {
     "patchedDependencies": {
       "xcode@3.0.1": "patches/xcode@3.0.1.patch"