I second cabal-plan, but I am suggesting in particular the PR https://github.com/haskell-hvr/cabal-plan/pull/53
which features the sub-command `why-depends` pruning the dependency tree to show you exactly why you depend on
a certain package.

(Trying to raise some awareness for that PR as I want it to be merged)

Best regards,
Fendor

On 13/03/2022 18:31, Vanessa McHale wrote:

I would use cabal-plan: https://hackage.haskell.org/package/cabal-plan

there’s a subcommand, cabal-plan dot, which produces output suitable for graphviz: https://graphviz.org

Cheers,

Vanessa McHale

On Mar 13, 2022, at 7:10 AM, Henry Laxen <nadine.and.henry@pobox.com> wrote:

Dear Haskell friends,

Is there a way to discover why a certain package is being compiled?  In my
case, the package cryptonite is a dependency of some other package, but I
don't know which one.  cryptonite doesn't compile on GHC 9.2.2, so if I can
find out which package is causing it to be selected, perhaps I can work around
my code so it (my code) does not depend on that package.  I hope I am making
myself clear.  Any pointers would be appreciated.
Best wishes,
Nadine and Henry Laxen            The rest is silence
_______________________________________________
Haskell-Cafe mailing list
To (un)subscribe, modify options or view archives go to:
http://mail.haskell.org/cgi-bin/mailman/listinfo/haskell-cafe
Only members subscribed via the mailman list are allowed to post.

_______________________________________________
Haskell-Cafe mailing list
To (un)subscribe, modify options or view archives go to:
http://mail.haskell.org/cgi-bin/mailman/listinfo/haskell-cafe
Only members subscribed via the mailman list are allowed to post.