Rerouted (regenerated, verified). Same repository and tag, but GitHub now builds the zip with different bytes, so it no longer matches the SHA-1 package.elm-lang.org recorded. The Lamdera package server serves a copy recovered from https://github.com/goyalarchit/graph-extra.
What we checked: Rebuilt with git archive from commit b34f560db75d of https://github.com/goyalarchit/graph-extra (zip prefix goyalarchit-graph-extra-b34f560/, America/Los_Angeles times): the zip is byte-identical to the one package.elm-lang.org recorded, SHA-1 6563e8b87916dacf0ec4c5bc9ecfe8a209cabb8b.
The Lamdera compiler uses this copy and prints a one-line notice saying so. elm itself fails to download this version.
Details · package.elm-lang.org's zip: https://github.com/goyalarchit/graph-extra/zipball/1.0.0/
Convenience functions and random graph generator for working with elm-community/graph.
The package exposes three modules
Check end-to-end example code in the examples/ folder.