Hi everyone,
I am using bun locally for my app, and when I build and run install everything works with no errors. I am on nextjs canary 40, but had this issue before I upgraded to canary. For some reason, when I build on Vercel, I get this error:

npm error code ERESOLVE
npm error ERESOLVE unable to resolve dependency tree
npm error
npm error While resolving: @kabobtech/rent-tracker@0.1.0
npm error Found: next@15.3.0-canary.41
npm error node_modules/next
npm error   next@"^15.3.0-canary.40" from the root project
npm error
npm error Could not resolve dependency:
npm error peer next@">=13.5.2 || ^14.0.0 || ^15.0.0" from @novu/nextjs@3.0.3
npm error node_modules/@novu/nextjs
npm error   @novu/nextjs@"^3.0.3" from the root project
npm error
npm error Fix the upstream dependency conflict, or retry
npm error this command with --force or --legacy-peer-deps
npm error to accept an incorrect (and potentially broken) dependency resolution.
npm error
npm error
npm error For a full report see:
npm error /vercel/.npm/_logs/2025-04-07T15_58_46_107Z-eresolve-report.txt
npm error A complete log of this run can be found in: /vercel/.npm/_logs/2025-04-07T15_58_46_107Z-debug-0.log
Error: Command "npm install" exited with 1

At first it would happen immediately, so then I decided to explicitly define bun install and bun run build commands in my vercel.json, and specify packageManager: "bun@1.2.2". That made everything go smooth, and it seemed like it finished the build, then at the end, dropped that error again. Why is it trying to use npm still? I dont understand it, I will paste the entire in the attached file.

Any help would be appreciated!