A generator provider should accept arbitrary commands

[steebchen]

Generators can be any executable file, but currently this is limited to one single command, which means you can't provide any arguments to a generator:

generator photon {
	provider = "/Users/prisma/go/bin/photongo"
	output = "./photon/photon_gen.go"
	package = "photon"
}

Providing arguments doesn't work:

generator photon {
	provider = "/Users/prisma/go/bin/photongo --option=on"
	output = "./photon/photon_gen.go"
	package = "photon"
}

Instead, the provider should accept full commands with arguments.

For example, provider could accept specifying full commands:

generator photon {
	provider = "go run github.com/prisma/photongo/generator"
	output = "./photon/photon_gen.go"
	package = "photon"
}

An alternative would be an array to specify the command with arguments:

generator photon {
	provider = ["go", "run", "github.com/prisma/photongo/generator"]
	output = "./photon/photon_gen.go"
	package = "photon"
}

[robojones]

This is related to #934. Is there any progress on either of them?

[robojones]

Thanks 👍
I really needed this, so I can create a good project setup with prisma-client-go.
How is it even possible that I can review changes in your PRs? 😆

[Jolg42]

@robojones You're welcome, and yes it's quite weird 🙃🤣

[steebchen]

This fails on the latest alpha:

prisma Error: ENOENT: no such file or directory, stat 'go run ../../..' +72ms

It seems this is the line where the error happens:

prisma/src/packages/generator-helper/src/GeneratorProcess.ts

Line 52 in cce5f84

isBinary = await isBinaryFile(this.executablePath)

We should also add a test which covers this.