aria2p not detecting macOS clipboard contents

[windowswithoutborders]

Describe the bug
when using the add downloads from clipboard feature, aria2p does not display the contents of the macOS clipboard

To Reproduce
copy anything. press a to see the contents.

Expected behavior
contents of clipboard are visible

System (please complete the following information):

• aria2p version: 0.10.4 (installed through pipx with pyperclip injected just in case)
• Python version: 3.9.1
• OS: macOS 11.2.1

Additional context
For what it's worth, macOS uses the pbcopy and pbpaste commands for working with the clipboard on the command line.
Also, currently adding downloads from a text file witharia2p add <text_file.txt> is a perfectly fine workaround.

Example:

> echo 'this is a test' | pbcopy
> pbpaste
this is a test

 ~
>

[pawamoy]

Yeah if I remember correctly I was never able to make the clipboard Python package work correctly in CI. I'll take a look at this.