Resolving dependencies... Error: cabal: Could not resolve dependencies: [__0] trying: liquidhaskell-boot-0.9.8.1 (user goal) [__1] next goal: ghc (dependency of liquidhaskell-boot) [__1] rejecting: ghc-9.6.3/installed-9.6.3 (conflict: liquidhaskell-boot => ghc^>=9.8) [__1] rejecting: ghc-9.8.1, ghc-9.6.4, ghc-9.6.3, ghc-9.6.1, ghc-9.4.8, ghc-9.4.7, ghc-9.4.6, ghc-9.4.5, ghc-9.4.4, ghc-9.4.3, ghc-9.4.2, ghc-9.4.1, ghc-9.2.8, ghc-9.2.7, ghc-9.2.6, ghc-9.2.5, ghc-9.2.4, ghc-9.2.3, ghc-9.2.2, ghc-9.2.1, ghc-9.0.2, ghc-8.10.7, ghc-8.10.2, ghc-8.10.1, ghc-8.8.3, ghc-8.8.1, ghc-8.6.5, ghc-8.6.4, ghc-8.6.1, ghc-8.4.4, ghc-8.4.3, ghc-8.4.1, ghc-8.2.2, ghc-8.2.1, ghc-9.2.3.20220620 (constraint from non-upgradeable package requires installed instance) [__1] fail (backjumping, conflict set: ghc, liquidhaskell-boot) After searching the rest of the dependency tree exhaustively, these were the goals I've had most trouble fulfilling: ghc, liquidhaskell-boot