[gentoo-user] Help with emerge error msg

[allan gottlieb]

In trying to emerge chromium I received an error msg saying that
net-libs/nodejs needed the "inspector" USE flag.

I added
      >=net-libs/nodejs-8.12.0 inspector
to
     /etc/portage/package.use  chromium

Now I receive the msg

!!! The ebuild selected to satisfy ">=net-libs/nodejs-7.6.0[inspector]" has unmet requirements.
- net-libs/nodejs-8.12.0::gentoo USE="inspector npm snapshot ssl -debug -doc -icu -systemtap -test" ABI_X86="(64)" CPU_FLAGS_X86="sse2" PYTHON_TARGETS="python2_7"

  The following REQUIRED_USE flag constraints are unsatisfied:
    inspector? ( icu )

  The above constraints are a subset of the following complete expression:
    python_targets_python2_7 inspector? ( icu ssl ) npm? ( ssl )

(dependency required by "www-client/chromium-72.0.3626.96::gentoo" [ebuild])
(dependency required by "chromium" [argument])

This seems more serious than a simple request to add the icu USE flag to
nodejs.  Can someone please explain how I should proceed?

Thanks in advance,
allan