Resolving dependencies...
cabal: Could not resolve dependencies:
[__0] trying: substring-parser-0.4.1.0 (user goal)
[__1] trying: base-4.11.1.0/installed-4.1... (dependency of substring-parser)
[__2] next goal: NoTrace (dependency of substring-parser)
[__2] rejecting: NoTrace-0.3.0.2 (conflict: base==4.11.1.0/installed-4.1...,
NoTrace => base>=4.7 && <4.11)
[__2] rejecting: NoTrace-0.3.0.1 (conflict: base==4.11.1.0/installed-4.1...,
NoTrace => base>=4.7 && <4.10)
[__2] rejecting: NoTrace-0.3.0.0 (conflict: base==4.11.1.0/installed-4.1...,
NoTrace => base>=4.7 && <4.9)
[__2] rejecting: NoTrace-0.2.0.1, NoTrace-0.2.0.0 (conflict:
base==4.11.1.0/installed-4.1..., NoTrace => base>=4.5 && <4.7)
[__2] rejecting: NoTrace-0.1.0.0 (conflict: base==4.11.1.0/installed-4.1...,
NoTrace => base>=4.3 && <4.7)
After searching the rest of the dependency tree exhaustively, these were the
goals I've had most trouble fulfilling: base, NoTrace, substring-parser