• Opening a new specific issue from Could not obtain flags for test files with cabal-helper cradle using stack #1564 , reported by:
  • 0xd34df00d in Could not obtain flags for test files with cabal-helper cradle using stack #1564 (comment)
  • Maybe @kirillFedorov1 in Could not obtain flags for test files with cabal-helper cradle using stack #1564 (comment) (pending on comfirm it is the same error)
• Citing @fendor:

We are currently not supporting diagnostics for Setup.hs. E.g. we can not load this into the IDE.

The workaround could be creating a implicit configuration with a hie.yaml file to make hie ignore Main.hs

More drastic one: if Setup.hs is the default one, like this:

import Distribution.Simple
main = defaultMain

and you build-type is simple (the default one) in your <pkgname>.cabal file, afaik you can delete it.