Add this to your manifest.json:
{
"dependencies": {
},
"scopedRegistries": [
{
"name": "Google Unity Packages (Unofficial)",
"url": "https://google-unity-packages.github.io/",
"scopes": [
"com.google"
]
}
]
}
No magic involved, this repository just serves auto-generated package manifests that redirect to .tgz files from Google Unity Package archive
The actual package manifests can be found in the gh-pages branch