>>> Emerging : portage://media-radio/js8call-3.0.3:run?{[]}

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

Calculating dependencies... done!

 └─step  1─┤ useflag portage://sci-libs/fftw-3.3.10-r1 (fortran)

 └─step  2─┤ download  portage://dev-build/b2-5.5.3
             │           └─ file ─┤ 1.17 Mb  	 b2-5.5.3.tar.gz
             │ download  portage://dev-libs/boost-1.91.0-r2
             │           └─ file ─┤ 195.10 Mb  	 boost_1_91_0.tar.bz2
             │ download  portage://dev-libs/double-conversion-3.4.0
             │           └─ file ─┤ 6.71 Mb  	 double-conversion-3.4.0.tar.gz
             │ download  portage://dev-libs/libevdev-1.13.7
             │           └─ file ─┤ 461.37 Kb  	 libevdev-1.13.7.tar.xz
             │ download  portage://dev-libs/libinput-1.32.0
             │           └─ file ─┤ 943.36 Kb  	 libinput-1.32.0.tar.bz2
             │ download  portage://dev-libs/libunibreak-8.0
             │           └─ file ─┤ 1.04 Mb  	 libunibreak-8.0.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://dev-libs/md4c-0.6.0
             │           └─ file ─┤ 262.56 Kb  	 md4c-0.6.0.tar.gz
             │ download  portage://dev-qt/qtbase-6.11.2-r2
             │           └─ file ─┤ 48.24 Mb  	 qtbase-everywhere-src-6.11.2.tar.xz
             │ download  portage://dev-qt/qtmultimedia-6.11.2
             │           └─ file ─┤ 9.78 Mb  	 qtmultimedia-everywhere-src-6.11.2.tar.xz
             │ download  portage://dev-qt/qtserialport-6.11.2
             │           └─ file ─┤ 257.86 Kb  	 qtserialport-everywhere-src-6.11.2.tar.xz
             │ download  portage://dev-qt/qtshadertools-6.11.2
             │           └─ file ─┤ 1.16 Mb  	 qtshadertools-everywhere-src-6.11.2.tar.xz
             │ download  portage://dev-qt/qttools-6.11.2
             │           └─ file ─┤ 4.57 Kb  	 qttools-6.11.2-llvm22.patch.xz
             │                    │ 9.75 Mb  	 qttools-everywhere-src-6.11.2.tar.xz
             │ download  portage://dev-qt/qttranslations-6.11.2
             │           └─ file ─┤ 1.61 Mb  	 qttranslations-everywhere-src-6.11.2.tar.xz
             │ download  portage://media-libs/alsa-lib-1.2.16.1
             │           └─ file ─┤ 1.08 Mb  	 alsa-lib-1.2.16.1.tar.bz2
             │ download  portage://media-libs/alsa-topology-conf-1.2.5.1-r1
             │           └─ file ─┤ 11.42 Kb  	 alsa-topology-conf-1.2.5.1.tar.bz2
             │ download  portage://media-libs/alsa-ucm-conf-1.2.16.1
             │           └─ file ─┤ 82.32 Kb  	 alsa-ucm-conf-1.2.16.1.tar.bz2
             │ download  portage://media-libs/dav1d-1.5.4
             │           └─ file ─┤ 1014.50 Kb  	 dav1d-1.5.4.tar.xz
             │ download  portage://media-libs/hamlib-4.7.2-r1
             │           └─ file ─┤ 2.96 Mb  	 hamlib-4.7.2.tar.gz
             │ download  portage://media-libs/libass-0.17.5-r1
             │           └─ file ─┤ 449.36 Kb  	 libass-0.17.5.tar.xz
             │ download  portage://media-libs/x264-0.0.20240513-r1
             │           └─ file ─┤ 821.87 Kb  	 x264-0.0.20240513.tar.bz2
             │ download  portage://media-libs/x265-4.3
             │           └─ file ─┤ 1.96 Mb  	 x265_4.3.tar.gz
             │ download  portage://media-libs/xvid-1.3.7-r2
             │           └─ file ─┤ 682.24 Kb  	 xvidcore-1.3.7.tar.bz2
             │ download  portage://media-radio/js8call-3.0.3
             │           └─ file ─┤ 13.24 Mb  	 js8call-3.0.3.tar.gz
             │ download  portage://media-video/ffmpeg-8.1.3
             │           └─ file ─┤ 0.66 Kb  	 ffmpeg-8.1-patchset-2.tar.xz
             │                    │ 11.19 Mb  	 ffmpeg-8.1.3.tar.xz
             │ download  portage://net-libs/libssh-0.12.2
             │           └─ file ─┤ 741.88 Kb  	 libssh-0.12.2.tar.xz
             │ download  portage://sci-libs/fftw-3.3.10-r1
             │           └─ file ─┤ 3.95 Mb  	 fftw-3.3.10.tar.gz
             │ download  portage://sys-libs/mtdev-1.1.7
             │           └─ file ─┤ 294.92 Kb  	 mtdev-1.1.7.tar.bz2
             │ download  portage://x11-libs/libXv-1.0.13
             │           └─ file ─┤ 274.86 Kb  	 libXv-1.0.13.tar.xz
             │ download  portage://x11-libs/libxkbcommon-1.13.2
             │           └─ file ─┤ 1.19 Mb  	 libxkbcommon-1.13.2.tar.gz
             │ download  portage://x11-libs/xcb-util-0.4.1
             │           └─ file ─┤ 261.13 Kb  	 xcb-util-0.4.1.tar.xz
             │ download  portage://x11-libs/xcb-util-cursor-0.1.6
             │           └─ file ─┤ 266.68 Kb  	 xcb-util-cursor-0.1.6.tar.xz
             │ download  portage://x11-libs/xcb-util-image-0.4.1
             │           └─ file ─┤ 282.24 Kb  	 xcb-util-image-0.4.1.tar.xz
             │ download  portage://x11-libs/xcb-util-renderutil-0.3.10
             │           └─ file ─┤ 255.89 Kb  	 xcb-util-renderutil-0.3.10.tar.xz
             │ download  portage://x11-libs/xcb-util-wm-0.4.2
             │           └─ file ─┤ 278.47 Kb  	 xcb-util-wm-0.4.2.tar.xz
             │ download  portage://x11-misc/xkeyboard-config-2.48
             │           └─ file ─┤ 930.97 Kb  	 xkeyboard-config-2.48.tar.xz

Total: 38 actions (1 useflag, 37 downloads), grouped into 2 steps.
       319.45 Mb to be downloaded.



>>> Assumptions taken during proving & planning:

  USE flag change (1 package):
  Add to /etc/portage/package.use:
    sci-libs/fftw fortran


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


>>> Domain assumptions

- Other: 
  unreachable(portage://virtual/libusb-0-r2:install,grouped_package_dependency(no,dev-libs,libusb-compat,[package_dependency(run,no,dev-libs,libusb-compat,greaterequal,version([0,1,5],,4,0,[],2,0.1.5-r2),[],[use(optenable(abi_x86_32),negative),use(optenable(abi_x86_64),negative),use(optenable(abi_x86_x32),negative),use(optenable(abi_mips_n32),negative),use(optenable(abi_mips_n64),negative),use(optenable(abi_mips_o32),negative),use(optenable(abi_s390_32),negative),use(optenable(abi_s390_64),negative)])]):run)