The metadata for Math::GSL lists its issue tracker as RT: https://rt.cpan.org/Public/Dist/Display.html?Name=Math-GSL

Perhaps report there first?

Edit: Although there are also issues on the github repo: https://github.com/leto/math--gsl/issues.

In reply to Re: Math::GSL::SparseMatrix is broken if installed on latest 5.32.1.1 "Strawberry Perl PDL edition", whom to report this issue to? by swl
in thread Math::GSL::SparseMatrix is broken if installed on latest 5.32.1.1 "Strawberry Perl PDL edition", whom to report this issue to? by Anonymous Monk

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