Question Package Manager does not import from tarball

I want to import a package from a tarball (.tar.gz) that I built myself from a package folder. (Importing from the package folder works.)
However, I keep getting the following error

[Package Manager Window] Cannot perform upm operation: Unable to add package [file:C:/Users/Willz/Downloads/PICOUnityIntegrationSDKv212/PICOUnityIntegrationSDKv212.tar.gz]:
The file [C:\Users\Willz\AppData\Local\Temp\.tmp-20500-BThbXAHBaaKY\package.json] cannot be found [NotFound].
UnityEditor.EditorApplication:Internal_CallUpdateFunctions ()​

I'm on Windows11 and Unity 2021.3.12.
If I open the tarball it looks ok and the

package.json

is where it is supposed to be. Also there are no spaces or other problematic symbols (no " or ') in the path.

Does someone have any clues about what is happening?
(For now I can, of course, import from the normal folder. However, I'd like to embed the tarball in my project as a dependency. But this is a tangent here.)

 

Hi @maximeb_unity , thanks for the quick response. I tried both, tarballing the directory

/packageName

as well as the content of that directory. So in the first case,

package.json

would be in the root of the unpacked folder, in the 2nd it'd be under

packageName/package.json

. Neithor of these approaches worked.
Am I screwing up somewhere else when creating the tarball? I'm using 7zip—first converting to

.tar

, then in a second step to

.tar.gz

—both using the default settings.

I can also share the tarballs if that is of any help.

Thx for helping out!

 

Thanks for the clarification @maximeb_unity . In the end, using the Unity API solved it for me. The only real difference to the folder structure I built that I see is that it's a

.tgz

file instead of a

.tar.gz

, which I thought are the same. Whatever. Now it works. Thx!