During cabal-install "the impossible happened", should I let it keep trying?

Question

Is there any point to letting cabal-install try to keep building a package if, at some point in the process, I see this:

ghc: panic! (the 'impossible' happened)
    ...some error...

...continues with build for a long time...

...eventual message: [x] failed to install

or should I just kill the process and try to solve the error?

Answer 1

The error means that one specific package failed to build. Any packages not downstream of the one that failed will still build correctly.