Resolving dependencies...
cabal: Could not resolve dependencies:
[__0] trying: hspretty-0.1.0.0 (user goal)
[__1] trying: unliftio-0.2.16 (dependency of hspretty)
[__2] next goal: unix (dependency of unliftio)
[__2] rejecting: unix-2.7.2.2/installed-2.7.2.2 (conflict: hspretty =>
bytestring^>=0.10.12.0, unix => bytestring==0.10.10.0/installed-0.10.10.0)
[__2] trying: unix-2.7.2.2
[__3] trying: time-1.9.3/installed-1.9.3 (dependency of unliftio)
[__4] trying: text-short-0.1.3 (dependency of hspretty)
[__5] next goal: binary (dependency of text-short)
[__5] rejecting: binary-0.8.8.0/installed-0.8.8.0 (conflict: hspretty =>
bytestring^>=0.10.12.0, binary => bytestring==0.10.10.0/installed-0.10.10.0)
[__5] trying: binary-0.8.8.0
[__6] trying: containers-0.6.2.1/installed-0.6.2.1 (dependency of binary)
[__7] trying: ormolu-0.1.4.1 (dependency of hspretty)
[__8] next goal: ghc-lib-parser (dependency of ormolu)
[__8] rejecting: ghc-lib-parser-9.0.1.20210324 (conflict: ormolu =>
ghc-lib-parser>=8.10 && <8.11)
[__8] skipping: ghc-lib-parser-9.0.1.20210207, ghc-lib-parser-9.0.1.20210205
(has the same characteristics that caused the previous version to fail:
excluded by constraint '>=8.10 && <8.11' from 'ormolu')
[__8] trying: ghc-lib-parser-8.10.4.20210206
[__9] trying: hpc-0.6.1.0/installed-0.6.1.0 (dependency of ghc-lib-parser)
[_10] next goal: directory (dependency of hspretty)
[_10] rejecting: directory-1.3.6.0/installed-1.3.6.0 (conflict: unix==2.7.2.2,
directory => unix==2.7.2.2/installed-2.7.2.2)
[_10] rejecting: directory-1.3.6.1, directory-1.3.6.0, directory-1.3.5.0,
directory-1.3.4.0, directory-1.3.3.2, directory-1.3.3.1, directory-1.3.3.0,
directory-1.3.2.2, directory-1.3.2.1, directory-1.3.2.0, directory-1.3.1.5,
directory-1.3.1.4, directory-1.3.1.3, directory-1.3.1.2, directory-1.3.1.1,
directory-1.3.1.0, directory-1.3.0.2, directory-1.3.0.1, directory-1.3.0.0,
directory-1.2.7.1, directory-1.2.7.0, directory-1.2.6.3, directory-1.2.6.2,
directory-1.2.5.1, directory-1.2.5.0, directory-1.2.4.0, directory-1.2.3.1,
directory-1.2.3.0, directory-1.2.2.1, directory-1.2.2.0, directory-1.2.1.0,
directory-1.2.0.1, directory-1.2.0.0, directory-1.1.0.2, directory-1.1.0.1,
directory-1.1.0.0, directory-1.0.1.2, directory-1.0.1.1, directory-1.0.1.0,
directory-1.0.0.3, directory-1.0.0.0, directory-1.2.6.1 (conflict: hpc =>
directory==1.3.6.0/installed-1.3.6.0)
[_10] fail (backjumping, conflict set: directory, hpc, hspretty, unix)
After searching the rest of the dependency tree exhaustively, these were the
goals I've had most trouble fulfilling: hpc, ghc-lib-parser, base, directory,
hpc:small_base, containers, hspretty, time, ormolu, unix, binary, text-short,
unliftio
Try running with --minimize-conflict-set to improve the error message.