Resolving dependencies...
cabal: Could not resolve dependencies:
[__0] trying: cabal-debian-4.38.2 (user goal)
[__1] trying: debian-3.93.2 (dependency of cabal-debian)
[__2] trying: HaXml-1.25.4 (dependency of debian)
[__3] next goal: base (dependency of cabal-debian)
[__3] rejecting: base-4.11.1.0/installed-4.1... (conflict: HaXml
+/-bytestringinbase +/-splitbase => base<4.11)
[__3] rejecting: base-4.12.0.0, base-4.11.1.0, base-4.11.0.0, base-4.10.1.0,
base-4.10.0.0, base-4.9.1.0, base-4.9.0.0, base-4.8.2.0, base-4.8.1.0,
base-4.8.0.0, base-4.7.0.2, base-4.7.0.1, base-4.7.0.0, base-4.6.0.1,
base-4.6.0.0, base-4.5.1.0, base-4.5.0.0, base-4.4.1.0, base-4.4.0.0,
base-4.3.1.0, base-4.3.0.0, base-4.2.0.2, base-4.2.0.1, base-4.2.0.0,
base-4.1.0.0, base-4.0.0.0, base-3.0.3.2, base-3.0.3.1 (constraint from
non-upgradeable package requires installed instance)
After searching the rest of the dependency tree exhaustively, these were the
goals I've had most trouble fulfilling: HaXml, base, haskell98, debian,
cabal-debian