• I am on the latest Poetry version.

• I have searched the issues of this repo and believe that this is not a duplicate.

• If an exception occurs when executing a command, I executed it again in debug mode (-vvv option).

• OS version and name: Linux 5.14.12 & 5.16.0

• Poetry version: 1.1.11 & 1.2.0a2

Issue

Adding a source like

[[tool.poetry.source]]                                                          
    name = "pytorch"                                                                
    url = "https://download.pytorch.org/whl/cu111"                                    
    secondary = true   

Works perfectly well when installing torch with

torch = { version = "=1.10.0+cpu", source = "pytorch"}    

but when trying to add mypy with poetry add poetry add mypy then I got a :

403 Client Error: Forbidden for url: https://download.pytorch.org/whl/cpu/mypy

Which obviously doesn't work as mypy is not in the pytorch package repository....
I don't get why pypi is not the default and "Pytorch" just as a fallback.

Thanks in advance for any help,
Have a great day.