Can't deploy to fly.io: postinstall.js EOF error

Bug description

Deploying to fly.io fails with the following error (this is the fly.io output):

[Parsing package.json]
[INFO] Parsing package.json
[INFO] No file to start server
[INFO] Using npm v6.14.12 from Node
[INFO] Installing node modules from ./package-lock.json

> @prisma/client@2.21.2 postinstall /workspace/node_modules/@prisma/client
> node scripts/postinstall.js

Prisma schema loaded from prisma/schema.prisma
Error executing lifecycle: unexpected EOF
npm ERR! code ELIFECYCLE
npm ERR! errno 1

Would be nice to know which file has the EOF issue but no logs indicate it.

How to reproduce

Here’s a repo: https://github.com/ryanflorence/fly-prisma

1. Set up a simple prisma “getting started” app (https://www.prisma.io/docs/getting-started/quickstart-typescript)
2. Follow the fly.io deploy instructions:

   flyctl launch
   flyctl deploy
   

3. You’ll get the error.

Prisma information

My prisma stuff runs fine locally, just followed the getting started guide.

Environment & setup

• OS: I assume fly.io is some *nix variety, uses heroku build pack
• Database: tried both postgres and sqlite, but you really don’t even get that far
• Node.js version: 14.16.1
• Prisma version: 2.21.2

(cc @mrkurt from fly.io)

[janpio]

Oh look at this: https://winter-meadow-5740.fly.dev/prisma Prisma running on a fly.io deployment ❤️

Thanks so much for the collaboration on this @jeromegn. We will add an e2e test for this soon: https://github.com/prisma/e2e-tests/issues/1656 And thanks @pantharshit00 of course for connecting the dots to the Kernel version.

@ryanflorence If you want, you can try your initial project again - that should work now as well.

[mrkurt]

@janpio thank you for digging into this with us!