Resolving dependencies...
cabal: Could not resolve dependencies:
next goal: pandoc-crossref (user goal)
rejecting: pandoc-crossref-0.2.4.1, pandoc-crossref-0.2.3.0,
pandoc-crossref-0.2.2.1, pandoc-crossref-0.2.1.3, pandoc-crossref-0.2.1.2,
pandoc-crossref-0.2.1.1, pandoc-crossref-0.1.6.5, pandoc-crossref-0.2.2.0,
pandoc-crossref-0.2.0.1, pandoc-crossref-0.2.0.0, pandoc-crossref-0.1.6.4,
pandoc-crossref-0.1.6.3, pandoc-crossref-0.1.6.2, pandoc-crossref-0.1.6.0,
pandoc-crossref-0.1.5.6, pandoc-crossref-0.1.5.5, pandoc-crossref-0.1.5.4,
pandoc-crossref-0.1.5.3, pandoc-crossref-0.1.5.2, pandoc-crossref-0.1.5.1,
pandoc-crossref-0.1.4.0, pandoc-crossref-0.1.3.0, pandoc-crossref-0.1.2.4,
pandoc-crossref-0.1.2.3 (constraint from user target requires ==0.1.2.2)
trying: pandoc-crossref-0.1.2.2
trying: aeson-1.0.2.1 (dependency of yaml-0.8.21.1)
next goal: pandoc-types (dependency of pandoc-crossref-0.1.2.2)
rejecting: pandoc-types-1.17.0.4, pandoc-types-1.17.0.3,
pandoc-types-1.17.0.2, pandoc-types-1.17.0.1, pandoc-types-1.17,
pandoc-types-1.16.1.1, pandoc-types-1.16.1, pandoc-types-1.16.0.1,
pandoc-types-1.16 (conflict: pandoc-crossref => pandoc-types>=1.12.4.1 &&
<1.13)
rejecting: pandoc-types-1.12.4.7, pandoc-types-1.12.4.6 (conflict:
aeson==1.0.2.1, pandoc-types => aeson>=0.6.2 && <0.11)
rejecting: pandoc-types-1.12.4.5, pandoc-types-1.12.4.4, pandoc-types-1.12.4.3
(conflict: aeson==1.0.2.1, pandoc-types => aeson>=0.6.2 && <0.10)
rejecting: pandoc-types-1.12.4.2, pandoc-types-1.12.4.1 (conflict:
aeson==1.0.2.1, pandoc-types => aeson>=0.6.2 && <0.9)
rejecting: pandoc-types-1.12.4, pandoc-types-1.12.3.3, pandoc-types-1.12.3.2,
pandoc-types-1.12.3.1, pandoc-types-1.12.3, pandoc-types-1.12.2.3,
pandoc-types-1.12.2.2, pandoc-types-1.12.2.1, pandoc-types-1.12.2,
pandoc-types-1.12.1.2, pandoc-types-1.12.1.1, pandoc-types-1.12.1,
pandoc-types-1.12, pandoc-types-1.10, pandoc-types-1.9.1,
pandoc-types-1.9.0.2, pandoc-types-1.9.0.1, pandoc-types-1.9,
pandoc-types-1.8.2, pandoc-types-1.8.0.2, pandoc-types-1.8, pandoc-types-1.7
(conflict: pandoc-crossref => pandoc-types>=1.12.4.1 && <1.13)
Backjump limit reached (currently 2000, change with --max-backjumps or try to
run with --reorder-goals).