The graphmod is a tool to generate a report for a hackage. You can find it on hackage, github and wiki.

To install via Stack

$ stack build --copy-compiler-tool graphmod

To generate default report:

$ stack exec graphmod | tred | dot -Tpdf > modules.pdf

To generate report without module:

$ stack exec graphmod -- --no-cluster | tred | dot -Tpdf > modules.pdf