Warning: The install command is a part of the legacy v1 style of cabal usage. Please switch to using either the new project style and the new-install command or the legacy v1-install alias as new-style projects will become the default in the next version of cabal-install. Please file a bug if you cannot replicate a working v1- use case with the new-style commands. For more information, see: https://wiki.haskell.org/Cabal/NewBuild Resolving dependencies... cabal: Could not resolve dependencies: [__0] trying: BiobaseFasta-0.3.0.1 (user goal) [__1] trying: resourcet-1.2.2 (dependency of BiobaseFasta) [__2] trying: primitive-0.7.0.0 (dependency of resourcet) [__3] trying: lens-4.17.1 (dependency of BiobaseFasta) [__4] trying: th-abstraction-0.3.1.0 (dependency of lens) [__5] trying: hashable-1.3.0.0 (dependency of lens) [__6] trying: DPutils-0.1.0.0 (dependency of BiobaseFasta) [__7] trying: criterion-1.5.5.0 (dependency of DPutils) [__8] trying: criterion-measurement-0.1.1.0 (dependency of criterion) [__9] trying: base-compat-0.10.5 (dependency of criterion-measurement) [_10] next goal: aeson (dependency of criterion) [_10] rejecting: aeson-1.4.3.0, aeson-1.4.2.0 (conflict: hashable==1.3.0.0, aeson => hashable>=1.2.7.0 && <1.3) [_10] rejecting: aeson-1.4.1.0 (conflict: primitive==0.7.0.0, aeson => primitive>=0.6.2.0 && <0.7) [_10] rejecting: aeson-1.4.0.0, aeson-1.3.1.1, aeson-1.3.1.0 (conflict: th-abstraction==0.3.1.0, aeson => th-abstraction>=0.2.2 && <0.3) [_10] rejecting: aeson-1.3.0.0, aeson-1.2.4.0, aeson-1.2.3.0, aeson-1.2.2.0, aeson-1.2.1.0, aeson-1.2.0.0, aeson-1.1.2.0, aeson-1.1.1.0, aeson-1.1.0.0, aeson-1.0.2.1, aeson-1.0.2.0, aeson-1.0.1.0, aeson-1.0.0.0 (conflict: base-compat==0.10.5, aeson => base-compat>=0.9.1 && <0.10) [_10] trying: aeson-0.11.3.0 [_11] trying: BiobaseTypes-0.2.0.1 (dependency of BiobaseFasta) [_12] next goal: SciBaseTypes (dependency of BiobaseTypes) [_12] rejecting: SciBaseTypes-0.1.0.0 (conflict: aeson==0.11.3.0, SciBaseTypes => aeson>=1.0) [_12] rejecting: SciBaseTypes-0.0.0.1 (conflict: BiobaseTypes => SciBaseTypes==0.1.0.*) [_12] fail (backjumping, conflict set: BiobaseTypes, SciBaseTypes, aeson) Backjump limit reached (currently 2000, change with --max-backjumps or try to run with --reorder-goals).