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haskellcabalhaskell-stack
Muhammadjon
Muhammadjon

Reputation: 1506

Stack has not been tested with GHC & Cabal versions

In my Haskell project when I stack run, it is showing the following, but still runs. What warning is this? How can I get rid of it?

Stack has not been tested with GHC versions above 8.6, and using 8.8.2, this may fail
Stack has not been tested with Cabal versions above 2.4, but version 3.0.1.0 was found, this may fail

Upvotes: 15

Views: 3937

Answers (4)

ntc2
ntc2

Reputation: 11962

This may cause other warnings you actually care about to be suppressed, but if you run stack --verbosity error or stack --silent you won't see these warnings. For example

stack --verbosity error exec <your program>

Upvotes: 0

Emi
Emi

Reputation: 5085

You can specify a resolver when creating a project to get rid of this warning:

stack new hello-world simple --resolver=lts-14.27

Upvotes: 0

Mad Wombat
Mad Wombat

Reputation: 15155

As the others said, this can be most likely be ignored. If you want to be on the super-safe side, edit your stack.yaml and downgrade the resolver back to 14.x (latest at this point is 14.27).

Upvotes: 3

Isaac van Bakel
Isaac van Bakel

Reputation: 1862

This is just a compatibility warning. The next stack version should be tested with GHC 8.8 and this warning should be gone. Until then there's probably little you can do unless you want to modify the source.

Upvotes: 5

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