• built on NixOS

• The tests defined in passthru.tests, if any, passed

• 0 of 0 passed binary check by having a zero exit code.

• 0 of 0 passed binary check by having the new version present in output.

• found 1.6.2 with grep in /nix/store/ja59wsyk8ix8sgnih6dvpgjilvzzvcph-libheif-1.6.2-bin

• directory tree listing: https://gist.github.com/58f63bb53b721f6d517cece40af8724a

• du listing: https://gist.github.com/2a8473d69b9adaaefdc9aa47eba15429

1449 total rebuild path(s)

485 package rebuild(s)

485 x86_64-linux rebuild(s)
429 i686-linux rebuild(s)
115 x86_64-darwin rebuild(s)
420 aarch64-linux rebuild(s)

First fifty rebuilds by attrpath
abiword
adapta-gtk-theme
aesop
almanah
aravis
arc-icon-theme
arc-theme
areca
arx-libertatis
asc-key-to-qr-code-gif
asciidoc-full
asciidoc-full-with-plugins
astroid
asymptote
audio-recorder
autotrace
awesome
awesome-4-0
azureus
balsa
baresip
beets
betterlockscreen
bibata-cursors
bibata-cursors-translucent
bibata-extra-cursors
birdfont
blockhash
bombono
bookworm
brasero
brasero-original
btrbk
byzanz
calibre
calls
capitaine-cursors
cataract
cataract-unstable
cawbird
cd-hit
chafa
chrome-gnome-shell
cinnamon.cinnamon-control-center
cuneiform
dblatexFull
deepin.dde-kwin
deepin.dde-launcher
deepin.dde-session-ui
deepin.startdde

Either download from Cachix:

nix-store -r /nix/store/ja59wsyk8ix8sgnih6dvpgjilvzzvcph-libheif-1.6.2-bin \
  --option binary-caches 'https://cache.nixos.org/ https://r-ryantm.cachix.org/' \
  --option trusted-public-keys '
  r-ryantm.cachix.org-1:gkUbLkouDAyvBdpBX0JOdIiD2/DP1ldF3Z3Y6Gqcc4c=
  cache.nixos.org-1:6NCHdD59X431o0gWypbMrAURkbJ16ZPMQFGspcDShjY=
  '

(r-ryantm's Cachix cache is only trusted for this store-path realization.)
For the Cachix download to work, your user must be in the trusted-users list or you can use sudo since root is effectively trusted.

Or, build yourself:

nix-build -A libheif https://github.com/r-ryantm/nixpkgs/archive/0987b0ad2b8a414c469e4dc731f3f8f83e608639.tar.gz

After you've downloaded or built it, look at the files and if there are any, run the binaries:

ls -la /nix/store/ja59wsyk8ix8sgnih6dvpgjilvzzvcph-libheif-1.6.2-bin
ls -la /nix/store/ja59wsyk8ix8sgnih6dvpgjilvzzvcph-libheif-1.6.2-bin/bin