GitHub Packages publishes mislabelled "npm" with dead npmjs.com link

[Shtian]

Summary

Minor issue experienced when publishing npm packages to GitHub Packages: the package link in the release notes points to a non-existent package on npmjs.com instead of linking to the package on GitHub, when publishing to the npm.pkg.github.com npm-registry. The same wrong label appears in bumpy status and bumpy ci plan output.

Tested with @varlock/bumpy@1.14.0.

Links

• Minimal reproduction repo: https://github.com/Shtian/bumpy-github-packages-repro
• Release notes with the dead npmjs link: https://github.com/Shtian/bumpy-github-packages-repro/releases/tag/%40shtian%2Fmy-pkg%401.3.0
• Workflow run for the 1.3.0 publish: https://github.com/Shtian/bumpy-github-packages-repro/actions/runs/27781057873/job/82205671394

Notes

I spent some tokens creating a quick minimal repro case here that illustrates the issue. It includes some suggested fixes. I guess you can quickly spot if the fixes are viable or not. The unused _registry argument in buildPublishUrl leads me to believe this might just be a feature yet to be implemented :)

If the fix is straight forward as suggested I could go ahead and create a PR, but lmk if its just a misconfigured setup from my side.