Resolving dependencies... Error: cabal: Could not resolve dependencies: [__0] trying: mueval-0.9.4 (user goal) [__1] next goal: unix (dependency of mueval) [__1] rejecting: unix-2.7.2.2/installed-2.7.2.2 (conflict: mueval => unix>=2.7.3 && <2.8) [__1] skipping: unix-2.8.5.0, unix-2.8.4.0, unix-2.8.3.0, unix-2.8.2.1, unix-2.8.2.0, unix-2.8.1.1, unix-2.8.1.0, unix-2.8.0.0 (has the same characteristics that caused the previous version to fail: excluded by constraint '>=2.7.3 && <2.8' from 'mueval') [__1] trying: unix-2.7.3 [__2] trying: bytestring-0.11.3.1/installed-0.11.3.1 (dependency of unix) [__3] trying: template-haskell-2.18.0.0/installed-2.18.0.0 (dependency of bytestring) [__4] trying: hint-0.9.0.8 (dependency of mueval) [__5] next goal: ghc-boot (dependency of hint) [__5] rejecting: ghc-boot-9.2.4/installed-9.2.4 (conflict: mueval => containers>=0.6.7 && <0.7, ghc-boot => containers==0.6.5.1/installed-0.6.5.1) [__5] rejecting: ghc-boot-9.8.1 (conflict: template-haskell => ghc-boot-th==9.2.4/installed-9.2.4, ghc-boot => ghc-boot-th==9.8.1) [__5] rejecting: ghc-boot-9.6.3 (conflict: template-haskell => ghc-boot-th==9.2.4/installed-9.2.4, ghc-boot => ghc-boot-th==9.6.3) [__5] rejecting: ghc-boot-9.6.1 (conflict: template-haskell => ghc-boot-th==9.2.4/installed-9.2.4, ghc-boot => ghc-boot-th==9.6.1) [__5] rejecting: ghc-boot-9.6.0.20230302 (conflict: template-haskell => ghc-boot-th==9.2.4/installed-9.2.4, ghc-boot => ghc-boot-th==9.6.0.20230302) [__5] rejecting: ghc-boot-9.4.1 (conflict: template-haskell => ghc-boot-th==9.2.4/installed-9.2.4, ghc-boot => ghc-boot-th==9.4.1) [__5] rejecting: ghc-boot-9.2.2 (conflict: template-haskell => ghc-boot-th==9.2.4/installed-9.2.4, ghc-boot => ghc-boot-th==9.2.2) [__5] rejecting: ghc-boot-9.2.1 (conflict: template-haskell => ghc-boot-th==9.2.4/installed-9.2.4, ghc-boot => ghc-boot-th==9.2.1) [__5] rejecting: ghc-boot-9.0.1 (conflict: bytestring => base==4.16.3.0/installed-4.16.3.0, ghc-boot => base>=4.7 && <4.16) [__5] rejecting: ghc-boot-8.8.3, ghc-boot-8.8.1 (conflict: bytestring => base==4.16.3.0/installed-4.16.3.0, ghc-boot => base>=4.11 && <4.14) [__5] rejecting: ghc-boot-8.6.5, ghc-boot-8.6.4, ghc-boot-8.6.1 (conflict: bytestring => base==4.16.3.0/installed-4.16.3.0, ghc-boot => base>=4.10 && <4.13) [__5] rejecting: ghc-boot-8.4.4, ghc-boot-8.4.3, ghc-boot-8.4.2, ghc-boot-8.4.1 (conflict: bytestring => base==4.16.3.0/installed-4.16.3.0, ghc-boot => base>=4.8 && <4.12) [__5] rejecting: ghc-boot-8.2.2, ghc-boot-8.2.1 (conflict: bytestring => base==4.16.3.0/installed-4.16.3.0, ghc-boot => base>=4.8 && <4.11) [__5] rejecting: ghc-boot-8.0.2, ghc-boot-8.0.1 (conflict: bytestring => base==4.16.3.0/installed-4.16.3.0, ghc-boot => base>=4.7 && <4.10) [__5] fail (backjumping, conflict set: bytestring, ghc-boot, hint, mueval, template-haskell) After searching the rest of the dependency tree exhaustively, these were the goals I've had most trouble fulfilling: ghc-boot, ghc, template-haskell, base, mueval, hint, bytestring, binary, unix Try running with --minimize-conflict-set to improve the error message.