Resolving dependencies...
cabal: Could not resolve dependencies:
next goal: yst (user goal)
rejecting: yst-0.5.0.4, 0.5.0.3, 0.5.0.2, 0.5.0.1, 0.5, 0.4.1.1, 0.4.1,
0.4.0.1, 0.4, 0.3.1.2 (global constraint requires ==0.3.1.1)
trying: yst-0.3.1.1
trying: HDBC-sqlite3-2.3.3.1 (dependency of yst-0.3.1.1)
trying: mtl-2.2.1 (dependency of HDBC-sqlite3-2.3.3.1)
next goal: pandoc (dependency of yst-0.3.1.1)
rejecting: pandoc-1.15.2.1, 1.15.2, 1.15.1.1, 1.15.1, 1.15.0.6, 1.15.0.5,
1.15.0.4, 1.15.0.3, 1.15.0.2, 1.14.1, 1.13.2.1, 1.13.2, 1.13.1, 1.13.0.1,
1.13, 1.12.4.2, 1.12.4, 1.12.3.3, 1.12.3.2, 1.12.3.1, 1.12.3, 1.12.2.1,
1.12.2, 1.12.1, 1.12.0.2, 1.12.0.1, 1.12 (conflict: yst => pandoc>=1.10 &&
<1.12)
rejecting: pandoc-1.11.1, 1.11, 1.10.1, 1.10.0.5, 1.10.0.4, 1.10.0.3,
1.10.0.2, 1.10.0.1, 1.10 (conflict: mtl==2.2.1, pandoc => mtl>=1.1 && <2.2)
rejecting: pandoc-1.9.4.5, 1.9.4.4, 1.9.4.3, 1.9.4.2, 1.9.4.1, 1.9.4, 1.9.3,
1.9.2, 1.9.1.2, 1.9.1.1, 1.9.1, 1.9.0.5, 1.9.0.4, 1.9.0.3, 1.9.0.2, 1.9,
1.8.2.1, 1.8.2, 1.8.1.2, 1.8.1.1, 1.8.1, 1.8.0.3, 1.8.0.2, 1.8.0.1, 1.8,
1.6.0.1, 1.6, 1.5.1.1, 1.5.1, 1.5.0.1, 1.5, 1.4, 1.3, 1.2.1, 1.2, 1.1,
1.0.0.1, 1.0, 0.46, 0.45, 0.44, 0.43, 0.42, 0.41, 0.4, 1.15.0.1, 1.15,
1.14.0.4, 1.14.0.3, 1.14.0.2, 1.14.0.1, 1.14 (conflict: yst => pandoc>=1.10 &&
<1.12)
Backjump limit reached (change with --max-backjumps).