Emerge conflict between mesa headers

Question

I keep getting conflicts between

x11-drivers/opengles-headers-0.0.1-r28:0::chromiumos

and mesa. As both are being provided by ChromiumOS not the custom overlay I'm building I have no idea why emerge conflicts are existing.

How do I cleanly remove files from chroot using cros_sdk chroot environment or gentoo emerge tools?

How do I decide if mesa headers should be kept or those provided by opengles-headers package?

This is for an ARM build.It's a serious time-killer deleting the chroot every time an error like this comes up. That seems to be the only way besides ignoring collisions to overcome. I've tried adding the package to /overlays/{overlay}/profiles/base/package.mask

Answer 1

you don't need to delete the sdk simply because of blockers. if they aren't resolved automatically, you can try removing the two packages and let the system reinstall them as needed.

e.g. run something like emerge -C <blocking packages> or emerge-$BOARD ....

if your custom overlay is causing the blockage, and removing the packages doesn't help, you'll need to resolve it in your custom overlay.