[ebuild  N     ] dev-lang/yasm-1.3.0-r2::gentoo USE="nls" 1.4 MiB
[ebuild  N     ] media-libs/libaom-3.14.1:0/3::gentoo USE="examples (-big-endian) -debug -doc -test" CPU_FLAGS_X86="avx avx2 mmx sse sse2 sse3 sse4_1 sse4_2 ssse3" 6.1 MiB
[ebuild  N     ] media-libs/libde265-1.1.3::gentoo USE="-debug -dec265 -sdl -tools" CPU_FLAGS_X86="avx2 avx512f sse" 316.8 KiB
[ebuild  N     ] media-libs/kvazaar-2.3.2:0/6::gentoo USE="-static-libs -test" 586.2 KiB
[ebuild  N     ] media-libs/giflib-6.1.3:0/7::gentoo USE="-doc -static-libs" 459.5 KiB
[ebuild  N     ] media-libs/libwebp-1.6.0:0/7::gentoo USE="gif jpeg opengl png tiff -static-libs -swap-16bit-csp" CPU_FLAGS_X86="avx2 sse2 sse4_1" 4.1 MiB
[ebuild  N     ] media-libs/x265-4.3:0/217::gentoo USE="10bit 12bit cet -numa -test -vmaf" 2.0 MiB
[ebuild  N     ] media-libs/libheif-1.20.2:0/1.20::gentoo USE="aom de265 jpeg jpeg2k kvazaar threads webp x265 -dav1d -doc -ffmpeg -gdk-pixbuf -gui -openh264 -rav1e -svt-av1 -test -test-full -tools" 1.7 MiB

Total: 8 packages (8 new), Size of downloads: 16.6 MiB


 * Running sanity checks...
>>> media-libs/libheif-1.20.2: failed pkg_pretend
 /Volumes/Disk 1/gentoo-prefix/usr/lib/pkgcore/lib/pkgcore/ebd/.generated/libs/8/pkg_pretend: line 144: [[: invalid regular expression `': empty (sub)expression
  * ERROR: media-libs/libheif-1.20.2:: failed (pretend phase):
  *   USE flag 'gui' not in IUSE for media-libs/libheif-1.20.2
  * 
  * Call stack:
  *    isolated-functions.bash, line  333:  called pkg_pretend
  *                ebuild.bash, line 2924:  called use 'gui'
  *                pkg_pretend, line  145:  called die
  * 
  * Working directory: '/var/tmp/portage'

!!! Sanity checks failed, exiting...