[ebuild  r  U ] net-wireless/gnuradio-3.8.1.0-r1 [3.7.13.5-r3] USE="alsa analog audio digital filter qt5 -channels -doc -dtv -examples -fec -grc -jack -modtool% -oss -performance-counters -portaudio -sdl -test -trellis -uhd -utils* -vocoder -wavelet -zeromq (-atsc%) (-fcd%) (-log%) (-noaa%) (-pager%) (-wxwidgets%)" PYTHON_SINGLE_TARGET="python3_7%* -python3_6% -python3_8% (-python2_7%*)" 
[ebuild  r  U ] net-wireless/gr-osmosdr-0.2.0 [0.1.5-r1] USE="-airspy -bladerf -hackrf -iqbalance (-mirisdr) -python -rtlsdr -sdrplay -soapy -uhd (-fcd%)" PYTHON_SINGLE_TARGET="python3_7%* -python3_6% -python3_8% (-python2_7%*)" 
[ebuild  rR   ] net-wireless/gqrx-2.12.1  USE="gr-audio -portaudio -pulseaudio" 

The following packages are causing rebuilds:

  (net-wireless/gnuradio-3.8.1.0-r1:0/3.8.1.0::gentoo, ebuild scheduled for merge) causes rebuilds for:
    (net-wireless/gqrx-2.12.1:0/0::gentoo, ebuild scheduled for merge)
    (net-wireless/gr-osmosdr-0.2.0:0/0.2.0::gentoo, ebuild scheduled for merge)
  (net-wireless/gr-osmosdr-0.2.0:0/0.2.0::gentoo, ebuild scheduled for merge) causes rebuilds for:
    (net-wireless/gqrx-2.12.1:0/0::gentoo, ebuild scheduled for merge)