The command stack solver wan't updated for quite a long time. Its functionality wasn't checked for cabal-install versions newer than 1.24 and issues a warning in such a case. Upcoming PR for #3922 2 breaks stack solver and it needs to be decided whether this command will be supported (and thus needs to be properly updated) or this feature will get removed in the new Stack version
The command
stack solverwan't updated for quite a long time. Its functionality wasn't checked forcabal-installversions newer than1.24and issues a warning in such a case. Upcoming PR for #3922 2 breaksstack solverand it needs to be decided whether this command will be supported (and thus needs to be properly updated) or this feature will get removed in the new Stack version