Resolving dependencies...
cabal: Could not resolve dependencies:
[__0] next goal: multilinear-io (user goal)
[__0] rejecting: multilinear-io-0.5.0.0, multilinear-io-0.4.0.0,
multilinear-io-0.3.0.0, multilinear-io-0.2.3, multilinear-io-0.2.1.2,
multilinear-io-0.2.1.1 (constraint from user target requires ==0.2.1)
[__0] trying: multilinear-io-0.2.1
[__1] trying: transformers-0.5.6.2/installed-0.5.6.2 (dependency of
multilinear-io)
[__2] trying: csv-enumerator-0.10.2.0 (dependency of multilinear-io)
[__3] next goal: enumerator (dependency of csv-enumerator)
[__3] rejecting: enumerator-0.4.20 (conflict: transformers =>
base==4.14.1.0/installed-4.14.1.0, enumerator => base>=4.0 && <4.11)
[__3] rejecting: enumerator-0.4.19, enumerator-0.4.18, enumerator-0.4.17,
enumerator-0.4.16, enumerator-0.4.15 (conflict: transformers =>
base==4.14.1.0/installed-4.14.1.0, enumerator => base>=4.0 && <4.7)
[__3] rejecting: enumerator-0.4.14 (conflict:
transformers==0.5.6.2/installed-0.5.6.2, enumerator => transformers>=0.2 &&
<0.3)
[__3] skipping: enumerator-0.4.13.1, enumerator-0.4.13, enumerator-0.4.12,
enumerator-0.4.11, enumerator-0.4.10, enumerator-0.4.9.1, enumerator-0.4.9,
enumerator-0.4.8, enumerator-0.4.7, enumerator-0.4.6, enumerator-0.4.5,
enumerator-0.4.4, enumerator-0.4.3.1, enumerator-0.4.3, enumerator-0.4.2,
enumerator-0.4.1, enumerator-0.4.0.2, enumerator-0.4.0.1, enumerator-0.4,
enumerator-0.3.0.1, enumerator-0.3, enumerator-0.2.1, enumerator-0.2,
enumerator-0.1.1, enumerator-0.1 (has the same characteristics that caused the
previous version to fail: excludes 'transformers' version 0.5.6.2)
[__3] fail (backjumping, conflict set: csv-enumerator, enumerator,
transformers)
After searching the rest of the dependency tree exhaustively, these were the
goals I've had most trouble fulfilling: enumerator, transformers, base,
csv-enumerator, multilinear-io
Try running with --minimize-conflict-set to improve the error message.