GNU Guix package links broken on project pages

[ryanprior]

Steps to reproduce

1. visit the page for a project packaged in Guix
2. click the package name or version in the Guix table row

Expected result

visit the package's page on the Guix directory

Actual result

404 error

Observations

One project where I observed this problem is esbuild. Its repology project versions page is here and shows a package in Guix, but the link is broken: it omits the package name and only includes the version.

Guix package: https://guix.gnu.org/packages/esbuild-0.7.16/
Link from project page: https://guix.gnu.org/packages/-0.7.16/

Other projects where I observed the issue

I tried a few other packages to make sure it's not just isolated to that one, and I also observe the issue for these packages:

• https://repology.org/project/emacs/versions
• https://repology.org/project/visidata/versions
• https://repology.org/project/ripgrep/versions