Resolving dependencies...
cabal: Could not resolve dependencies:
[__0] next goal: libsystemd-journal (user goal)
[__0] rejecting: libsystemd-journal-1.4.5 (conflict: pkg-config package
libsystemd==209 || >209, not found in the pkg-config database)
[__0] rejecting: libsystemd-journal-1.4.4, libsystemd-journal-1.4.3,
libsystemd-journal-1.4.2, libsystemd-journal-1.4.1, libsystemd-journal-1.4.0,
libsystemd-journal-1.3.4, libsystemd-journal-1.3.3, libsystemd-journal-1.3.1,
libsystemd-journal-1.3.0, libsystemd-journal-1.2.0, libsystemd-journal-1.1.0,
libsystemd-journal-1.0.0 (constraint from user target requires ==1.4.5)
[__0] fail (backjumping, conflict set: libsystemd-journal)
After searching the rest of the dependency tree exhaustively, these were the
goals I've had most trouble fulfilling: libsystemd-journal