Makefile outdated?

[MaxGabriel]

The makefile has commands for per-backend testing, e.g.

test-postgresql: reset-pgsql
	stack test esqueleto:postgresql                                                                                                                                                                                                                                                                                                             

But if you actually run

stack test esqueleto:postgresql

You get:

Error parsing targets: Component postgresql does not exist in package esqueleto

I'm guessing this is an old way of running the tests. I'm not sure if running single database backend is actually possible anymore? I might just be not finding where that's configured though