Resolving dependencies... Error: cabal: Could not resolve dependencies: [__0] trying: liquidhaskell-boot-0.9.12.2.1 (user goal) [__1] next goal: ghc (dependency of liquidhaskell-boot) [__1] rejecting: ghc-9.8.4/installed-inplace (conflict: liquidhaskell-boot => ghc^>=9.12) [__1] skipping: ghc-9.14.1 (has the same characteristics that caused the previous version to fail: excluded by constraint '^>=9.12' from 'liquidhaskell-boot') [__1] rejecting: ghc-9.12.3, ghc-9.12.2, ghc-9.12.1, ghc-9.10.3, ghc-9.10.2, ghc-9.10.1, ghc-9.8.4, ghc-9.8.3, ghc-9.8.2, ghc-9.8.1, ghc-9.6.7, ghc-9.6.6, ghc-9.6.5, ghc-9.6.4, ghc-9.6.3, ghc-9.6.2, 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