Resolving dependencies...
cabal: Could not resolve dependencies:
next goal: persistent (user goal)
rejecting: persistent-2.6, persistent-2.5, persistent-2.2.4.1,
persistent-2.2.4, persistent-2.2.3, persistent-2.2.2.1, persistent-2.2.2,
persistent-2.2.1, persistent-2.2, persistent-2.1.6, persistent-2.1.5,
persistent-2.1.4, persistent-2.1.3, persistent-2.1.2, persistent-2.1.1.7,
persistent-2.1.1.6, persistent-2.1.1.5, persistent-2.1.1.4,
persistent-2.1.1.3, persistent-2.1.1.2, persistent-2.1.1.1, persistent-2.1.1,
persistent-2.1.0.2, persistent-2.1.0.1, persistent-2.1, persistent-1.3.3,
persistent-1.3.2, persistent-1.3.1.1, persistent-1.3.1, persistent-1.3.0.6,
persistent-1.3.0.5, persistent-1.3.0.4, persistent-1.3.0.3,
persistent-1.3.0.2, persistent-1.3.0, persistent-1.2.3.3, persistent-1.2.3.2,
persistent-1.2.3.0, persistent-1.2.2.0, persistent-1.2.1.2,
persistent-1.2.1.1, persistent-1.2.1, persistent-1.2.0.2, persistent-1.2.0.1,
persistent-1.2.0, persistent-1.1.5.1 (constraint from user target requires
==1.1.5)
trying: persistent-1.1.5
trying: base-4.9.0.0/installed-4.9... (dependency of persistent-1.1.5)
trying: transformers-compat-0.5.1.4 (dependency of transformers-base-0.4.4)
trying: transformers-compat-0.5.1.4:-two
trying: transformers-compat-0.5.1.4:+mtl
trying: transformers-compat-0.5.1.4:-three
next goal: monad-control (dependency of persistent-1.1.5)
rejecting: monad-control-1.0.1.0, monad-control-1.0.0.5,
monad-control-1.0.0.4, monad-control-1.0.0.3, monad-control-1.0.0.2,
monad-control-1.0.0.1, monad-control-1.0.0.0 (conflict: pool-conduit =>
monad-control<1)
rejecting: monad-control-0.3.3.1 (conflict: transformers-compat==0.5.1.4,
monad-control => transformers-compat>=0.3 && <0.5)
trying: monad-control-0.3.3.0
next goal: transformers (dependency of persistent-1.1.5)
rejecting: transformers-0.5.2.0/installed-0.5..., transformers-0.5.2.0,
transformers-0.5.1.0, transformers-0.5.0.1, transformers-0.5.0.0 (conflict:
monad-control => transformers>=0.2 && <0.5)
rejecting: transformers-0.4.3.0, transformers-0.4.2.0 (conflict:
base==4.9.0.0/installed-4.9..., transformers => base>=2 && <4.9)
rejecting: transformers-0.4.1.0 (conflict: base==4.9.0.0/installed-4.9...,
transformers => base>=2 && <4.8 || >=1.0 && <2)
rejecting: transformers-0.3.0.0 (conflict: transformers-compat-0.5.1.4:three
=> transformers>=0.2 && <0.3 || >=0.4.1 && <0.6)
rejecting: transformers-0.2.2.1, transformers-0.2.1.0 (conflict:
transformers-compat-0.5.1.4:three => transformers>=0.4.1 && <0.6)
rejecting: transformers-0.2.0.0, transformers-0.1.4.0, transformers-0.1.3.0,
transformers-0.1.1.0, transformers-0.1.0.1, transformers-0.0.1.0,
transformers-0.0.0.0 (conflict: persistent => transformers>=0.2.1)
rejecting: transformers-0.5.0.2 (conflict: monad-control => transformers>=0.2
&& <0.5)
rejecting: transformers-0.4.0.0 (conflict: transformers-compat =>
transformers>=0.3 && <0.4 || >=0.2 && <0.3 || >=0.4.1 && <0.6)
rejecting: transformers-0.2.2.0 (conflict: transformers-compat-0.5.1.4:three
=> transformers>=0.4.1 && <0.6)
rejecting: transformers-0.1.0.0 (conflict: persistent => transformers>=0.2.1)
Backjump limit reached (currently 2000, change with --max-backjumps or try to
run with --reorder-goals).