Resolving dependencies...
cabal: Could not resolve dependencies:
next goal: computational-algebra (user goal)
rejecting: computational-algebra-0.3.0.0, 0.2.0.0, 0.1.3.6, 0.1.3.5, 0.1.3.1,
0.1.3.0, 0.1.2.0, 0.1.1.0, 0.1.0.1, 0.1.0.0, 0.0.3.2 (global constraint
requires ==0.0.3.1)
trying: computational-algebra-0.0.3.1
trying: base-4.7.0.1/installed-e4b... (dependency of
computational-algebra-0.0.3.1)
trying: peggy-0.3.2 (dependency of computational-algebra-0.0.3.1)
trying: haskell-src-meta-0.6.0.9 (dependency of peggy-0.3.2)
next goal: template-haskell (dependency of peggy-0.3.2)
rejecting: template-haskell-2.9.0.0/installed-3af..., 2.10.0.0, 2.9.0.0
(conflict: peggy => template-haskell>=2.5 && <2.9)
rejecting: template-haskell-2.8.0.0 (conflict: base==4.7.0.1/installed-e4b...,
template-haskell => base==4.6.*)
rejecting: template-haskell-2.7.0.0 (conflict: base==4.7.0.1/installed-e4b...,
template-haskell => base==4.5.*)
rejecting: template-haskell-2.6.0.0, 2.5.0.0 (conflict: haskell-src-meta =>
template-haskell>=2.7 && <2.11)
rejecting: template-haskell-2.4.0.1, 2.4.0.0, 2.3.0.1, 2.3.0.0, 2.2.0.0
(conflict: peggy => template-haskell>=2.5 && <2.9)
Dependency tree exhaustively searched.