I had argyllcms 2 installed and installed media-gfx/displaycal-py3 to try it out. It wasn't able to drive argyll, with a message "DisplayCAL: Waiting for send buffer" after a couple of steps in a calibration. I updated argyllcms and calibration proceeded. So I think an RDEPEND to a minimum version of argyllcms should be specified, instead of the plain media-gfx/argyllcms. Reproducible: Always
Well my bad, the "DisplayCAL: Waiting for send buffer" problem still occurs with argyllcms 3.
So I opened an upstream issue: https://github.com/eoyilmaz/displaycal-py3/issues/350
Can you please check if this still occurs with the latest version in Gentoo, 3.9.13_pre20240925? Thanks