Yeah sorry I expressed myself wrongly, I mean that it looked like pipx didn’t install the package in the dedicated venv, and that was actually the case because I didn’t specify which packages to install in the pyproject.toml file apparently. I substituted these lines:

[tool.setuptools.packages.find]
where = ["energymonitor"]

[tool.setuptools.package-data]
data = ["data/*"]

with these lines:

[tool.setuptools]
packages = ["energymonitor"]
include-package-data = true

and it worked!

I tried to change both the project name, which was energy-monitor, and the package name (energymonitor) to be the same and I set both to energy_monitor, but nothing changes…but if I open the python shell in the same folder as the project I can import the energy_monitor package with no errors, as soon as I change folder it doesn’t find the package anymore. It looks like it didn’t install the package system wide, but I thought that pipx should handle these kind of things.