Dear friendly Cabal folk Here's what happened to me today bash$ cabal install lhs2tex
cabal: Could not resolve dependencies: [__0] next goal: report (user goal) [__0] rejecting: report-0.1.0.0 (conflict: requires UnsaturatedTypeFamilies) [__0] fail (backjumping, conflict set: report) After searching the rest of the dependency tree exhaustively, these were the goals I've had most trouble fulfilling: report Crumbs. What is 'report'? Why does it need UnsaturatedTypeFamilies? I'm totally lost. Then, in an inspired moment, I thought to change to a different directory, ~/tmp. Then quite different things happened - it downloaded and built relevant libraries. I think that there just happened to be a .cabal file in the original directory I was in at the time. That appears to affect what 'cabal install' does in a truly radical way. My point is this: this is terribly confusing for the user (at least for this on). I'd be shocked if 'apt install blah' behaved utterly differently in different directories. I'm going to make a little empty directory somewhere, and cd to it before invoking cabal in future. But that just feels like a workaround, not a solution. I'm not saying it's wrong - just giving you a data point that it had one user completely stumped Simon
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