>>> Emerging : portage://dev-embedded/arduino-builder-1.5.4-r2:run?{[]}

These are the packages that would be merged, in order:

Calculating dependencies... done!

 └─step  1─┤ download  portage://dev-embedded/arduino-builder-1.5.4-r2
             │           └─ file ─┤ 131.03 Mb  	 arduino-builder-1.5.4-deps.tar.xz
             │                    │ 37.65 Kb  	 arduino-builder-1.5.4.tar.gz
             │ download  portage://dev-embedded/arduino-ctags-20161123-r2
             │           └─ file ─┤ 478.71 Kb  	 arduino-ctags-20161123.tar.gz
             │ download  portage://dev-embedded/avrdude-8.3
             │           └─ file ─┤ 6.26 Mb  	 avrdude-8.3.tar.gz
             │ download  portage://dev-lang/go-1.27.2
             │           └─ file ─┤ 33.51 Mb  	 go1.27.2.src.tar.gz
             │ download  portage://dev-lang/go-bootstrap-1.24.6
             │           └─ file ─┤ 69.70 Mb  	 go-bootstrap-1.24.6-linux-amd64.tbz
             │ download  portage://dev-libs/hidapi-0.15.0
             │           └─ file ─┤ 355.31 Kb  	 hidapi-0.15.0.tgz
             │ download  portage://dev-libs/libserialport-0.1.2-r1
             │           └─ file ─┤ 459.78 Kb  	 libserialport-0.1.2.tar.gz
             │ download  portage://dev-libs/libusb-1.0.30
             │           └─ file ─┤ 640.73 Kb  	 libusb-1.0.30.tar.bz2
             │ download  portage://dev-libs/libusb-compat-0.1.9
             │           └─ file ─┤ 321.19 Kb  	 libusb-compat-0.1.9.tar.bz2
             │ download  portage://sys-apps/config-site-0
             │           └─ file ─┤ 6.43 Kb  	 config-site-0.tar.bz2
             │ download  portage://sys-devel/crossdev-20260623
             │           └─ file ─┤ 33.64 Kb  	 crossdev-20260623.tar.xz

Total: 11 actions (11 downloads), grouped into 1 step.
       242.78 Mb to be downloaded.



Error The proof for your build plan contains domain assumptions. Please verify:


>>> Domain assumptions

- Other: 
  unreachable(portage://dev-libs/libusb-compat-0.1.9:install,portage://virtual/libusb-0-r2:install)