Created attachment 647528 [details] build.log dev-haskell/stack-2.3.1 fails to build with "setup build failed"
Created attachment 647530 [details] emerge --info '=dev-haskell/stack-2.3.1::haskell'
Created attachment 647532 [details] emerge -pqv '=dev-haskell/stack-2.3.1::haskell'
stack-2.3.1 is incompatible with pantry-0.5, but it has no such version constraint in its .cabal file. See https://github.com/commercialhaskell/stack/issues/5298. Fixed in https://github.com/gentoo-haskell/gentoo-haskell/commit/53ebfa5bc471ba3dbc617b21b703be75370ecb51