Resolving dependencies...
Error: cabal: Could not resolve dependencies:
[__0] trying: chez-grater-0.1.2 (user goal)
[__1] trying: bytestring-0.11.3.1/installed-0.11.3.1 (dependency of
chez-grater)
[__2] trying: base-4.16.3.0/installed-4.16.3.0 (dependency of chez-grater)
[__3] next goal: attoparsec (dependency of chez-grater)
[__3] rejecting: attoparsec-0.14.4 (conflict: chez-grater => attoparsec<0.14)
[__3] skipping: attoparsec-0.14.3, attoparsec-0.14.2, attoparsec-0.14.1 (has
the same characteristics that caused the previous version to fail: excluded by
constraint '<0.14' from 'chez-grater')
[__3] rejecting: attoparsec-0.13.2.5 (conflict: bytestring =>
ghc-prim==0.8.0/installed-0.8.0, attoparsec => ghc-prim<0.8)
[__3] rejecting: attoparsec-0.13.2.4 (conflict:
bytestring==0.11.3.1/installed-0.11.3.1, attoparsec => bytestring<0.11)
[__3] skipping: attoparsec-0.13.2.3, attoparsec-0.13.2.2, attoparsec-0.13.2.1,
attoparsec-0.13.2.0, attoparsec-0.13.1.0, attoparsec-0.13.0.2,
attoparsec-0.13.0.1, attoparsec-0.13.0.0, attoparsec-0.12.1.6,
attoparsec-0.12.1.5, attoparsec-0.12.1.4, attoparsec-0.12.1.3,
attoparsec-0.12.1.2, attoparsec-0.12.1.1, attoparsec-0.12.1.0,
attoparsec-0.12.0.0, attoparsec-0.11.3.4, attoparsec-0.11.3.3,
attoparsec-0.11.3.2, attoparsec-0.11.3.1, attoparsec-0.11.3.0,
attoparsec-0.11.2.1, attoparsec-0.11.1.0, attoparsec-0.10.4.0,
attoparsec-0.10.3.0, attoparsec-0.10.2.0, attoparsec-0.10.1.1,
attoparsec-0.10.1.0, attoparsec-0.10.0.3, attoparsec-0.10.0.2,
attoparsec-0.10.0.1, attoparsec-0.10.0.0 (has the same characteristics that
caused the previous version to fail: excludes 'bytestring' version 0.11.3.1)
[__3] rejecting: attoparsec-0.9.1.2, attoparsec-0.9.1.1, attoparsec-0.9.0.0,
attoparsec-0.8.6.1, attoparsec-0.8.6.0, attoparsec-0.8.5.3,
attoparsec-0.8.5.2, attoparsec-0.8.5.1, attoparsec-0.8.5.0, attoparsec-0.8.4.0
(conflict: bytestring => base==4.16.3.0/installed-4.16.3.0, attoparsec
+/-applicative-in-base +/-split-base => base<2.2 || >=3 && <4.11)
[__3] rejecting: attoparsec-0.8.3.0, attoparsec-0.8.2.0, attoparsec-0.8.1.1,
attoparsec-0.8.1.0, attoparsec-0.8.0.2, attoparsec-0.8.0.1, attoparsec-0.8.0.0
(conflict: bytestring => base==4.16.3.0/installed-4.16.3.0, attoparsec
+/-applicative-in-base +/-split-base => base<2.2 || >=3 && <4.4)
[__3] trying: attoparsec-0.7.2
[__4] next goal: aeson (dependency of chez-grater)
[__4] rejecting: aeson-2.1.1.0 (conflict: chez-grater => aeson<1.6)
[__4] skipping: aeson-2.1.0.0, aeson-2.0.3.0, aeson-2.0.2.0, aeson-2.0.1.0,
aeson-2.0.0.0 (has the same characteristics that caused the previous version
to fail: excluded by constraint '<1.6' from 'chez-grater')
[__4] rejecting: aeson-1.5.6.0 (conflict: attoparsec==0.7.2, aeson =>
attoparsec>=0.13.2.2 && <0.15)
[__4] skipping: aeson-1.5.5.1, aeson-1.5.5.0, aeson-1.5.4.1, aeson-1.5.4.0,
aeson-1.5.3.0, aeson-1.5.2.0, aeson-1.5.1.0, aeson-1.5.0.0, aeson-1.4.7.1,
aeson-1.4.7.0, aeson-1.4.6.0, aeson-1.4.5.0, aeson-1.4.4.0, aeson-1.4.3.0,
aeson-1.4.2.0, aeson-1.4.1.0, aeson-1.4.0.0, aeson-1.3.1.1, aeson-1.3.1.0,
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, aeson-0.11.3.0, aeson-0.11.2.1,
aeson-0.11.2.0, aeson-0.11.1.4, aeson-0.11.1.3, aeson-0.11.1.2,
aeson-0.11.1.1, aeson-0.11.1.0, aeson-0.11.0.0, aeson-0.9.0.1, aeson-0.9.0.0,
aeson-0.8.1.1, aeson-0.8.1.0, aeson-0.8.0.2, aeson-0.7.0.6, aeson-0.7.0.4,
aeson-0.6.2.1, aeson-0.6.2.0, aeson-0.6.1.0, aeson-0.6.0.2, aeson-0.6.0.1,
aeson-0.6.0.0, aeson-0.5.0.0, aeson-0.4.0.1, aeson-0.4.0.0, aeson-0.3.2.14,
aeson-0.3.2.13, aeson-0.3.2.12, aeson-0.3.2.11, aeson-0.3.2.10, aeson-0.3.2.9,
aeson-0.3.2.8, aeson-0.3.2.7, aeson-0.3.2.6, aeson-0.3.2.5, aeson-0.3.2.4,
aeson-0.3.2.3, aeson-0.3.2.2, aeson-0.3.2.1, aeson-0.3.2.0, aeson-0.3.1.1,
aeson-0.3.1.0, aeson-0.3.0.0, aeson-0.2.0.0, aeson-0.1.0.0, aeson-0.10.0.0,
aeson-0.8.0.1, aeson-0.8.0.0, aeson-0.7.0.5, aeson-0.7.0.3, aeson-0.7.0.2,
aeson-0.7.0.1, aeson-0.7.0.0 (has the same characteristics that caused the
previous version to fail: excludes 'attoparsec' version 0.7.2)
[__4] fail (backjumping, conflict set: aeson, attoparsec, chez-grater)
After searching the rest of the dependency tree exhaustively, these were the
goals I've had most trouble fulfilling: attoparsec, aeson, base, bytestring,
chez-grater
Try running with --minimize-conflict-set to improve the error message.