Unity Package indirect (transitive) dependencies from GitHub

So, I'm creating a package which includes a set of common stuff I use in all my projects and I'm hosting it on GitHub. Now, I want it to declare a dependency to another package which is also hosted on GitHub (this one specifically: https://github.com/route1rodent/iTween). It works like a charm if I add the dependency to the manifest.json of the project like

Code (JavaScript):

1. "dependencies": {
2.     "com.pixelplacement.itween": "https://github.com/route1rodent/iTween.git",
3.     // ... more dependencies here
4.    }

But if I try to remove this dependency from the manifest.json and instead add it to my package.json soit becomes an indirect dependency from my main package, I get this error in the console and the Package Manager UI:

com.pixelplacement.itween: Version 'https://github.com/route1rodent/iTween.git' is invalid. Expected a 'SemVer' compatible value.

Using Unity 2018.4.13f1

Any help will be much appreciated!

 

See https://forum.unity.com/threads/custom-package-with-git-dependencies.628390/

If you're making an open source UPM package, consider to try out https://www.openupm.com/

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