Warning: No available formula with the name "wpantund"

Hello everyone!

I have a problem that seems to be common with the installation process of the nRF52840 on Mac Monterey 12.4.

When I run:

brew update
brew install ./etc/wpantund.rb

I get:

Warning: No available formula with the name "wpantund".
==> Searching for similarly named formulae...
Error: No similarly named formulae found.
==> Searching for a previously deleted formula (in the last month)...
Error: No previously deleted formula found.
==> Searching taps on GitHub...
Error: No formulae found in taps.

I tried to uninstall and re-install several times brew. And Brew doctor seems to be fine.

Have you got solutions for that purpose?

BR,
Gaƫl