Resolving dependencies...
cabal: Could not resolve dependencies:
[__0] trying: symantic-xml-2.0.0.20200523 (user goal)
[__1] unknown package: symantic-base (dependency of symantic-xml)
[__1] fail (backjumping, conflict set: symantic-base, symantic-xml)
After searching the rest of the dependency tree exhaustively, these were the
goals I've had most trouble fulfilling: symantic-xml, symantic-base