Resolving dependencies...
cabal: Could not resolve dependencies:
next goal: Hs2lib (user goal)
rejecting: Hs2lib-0.6.3 (global constraint requires ==0.6.1)
trying: Hs2lib-0.6.1
trying: base-4.8.1.0/installed-4f7... (dependency of Hs2lib-0.6.1)
next goal: haskell-src-exts (dependency of Hs2lib-0.6.1)
rejecting: haskell-src-exts-1.17.1, 1.17.0, 1.16.0.1, 1.16.0, 1.15.0.1,
1.15.0, 1.14.0.1, 1.14.0 (conflict: Hs2lib => haskell-src-exts==1.13.5)
trying: haskell-src-exts-1.13.5
rejecting: haskell-src-exts-1.13.5:+base4 (conflict:
base==4.8.1.0/installed-4f7..., haskell-src-exts-1.13.5:base4 => base>=4 &&
<4.8)
rejecting: haskell-src-exts-1.13.5:-base4 (conflict:
base==4.8.1.0/installed-4f7..., haskell-src-exts-1.13.5:base4 => base>=3 &&
<4)
Dependency tree exhaustively searched.