Resolving dependencies...
cabal: Could not resolve dependencies:
next goal: UMM (user goal)
rejecting: UMM-0.3.1, UMM-0.3.0, UMM-0.2.2, UMM-0.2.1, UMM-0.2.0, UMM-0.1.6,
UMM-0.1.5, UMM-0.1.4, UMM-0.1.3, UMM-0.1.1 (constraint from user target
requires ==0.1.0)
trying: UMM-0.1.0
trying: base-4.9.0.0/installed-4.9... (dependency of UMM-0.1.0)
trying: old-time-1.1.0.3 (dependency of UMM-0.1.0)
trying: deepseq-1.4.2.0/installed-1.4... (dependency of text-1.2.2.1)
next goal: haskell98 (dependency of UMM-0.1.0)
rejecting: haskell98-2.0.0.3 (conflict: base==4.9.0.0/installed-4.9...,
haskell98 => base>=4.7 && <4.8)
rejecting: haskell98-2.0.0.2 (conflict: base==4.9.0.0/installed-4.9...,
haskell98 => base==4.6.*)
rejecting: haskell98-2.0.0.1 (conflict: deepseq =>
array==0.5.1.1/installed-0.5..., haskell98 => array>=0.3 && <0.5)
rejecting: haskell98-2.0.0.0 (conflict: old-time==1.1.0.3, haskell98 =>
old-time>=1.0 && <1.1)
rejecting: haskell98-1.1.0.1, haskell98-1.1.0.0, haskell98-1.0.1.1 (conflict:
base==4.9.0.0/installed-4.9..., haskell98 => base>=3 && <4.6)
rejecting: haskell98-1.0.1.0 (conflict: base==4.9.0.0/installed-4.9...,
haskell98 => base<4.6)
rejecting: haskell98-1.0 (conflict: base==4.9.0.0/installed-4.9..., haskell98
=> base<4.3)
Backjump limit reached (currently 2000, change with --max-backjumps or try to
run with --reorder-goals).