font-remove-trak-table.sh

#!/usr/bin/env bash

read -rd '' script <<'EOF' || :
import sys
from fontTools import ttLib

path = sys.argv[1]
font = ttLib.TTFont(path)
del font['trak']
font.save(sys.stdout.buffer)
EOF
# as of 2022-09-02
nixos_unstable=2da64a81275b68fdad38af669afeda43d401e94b
drv=$(nix eval --raw nixpkgs/$nixos_unstable#python3 --apply '
  py: (py.withPackages (ps: with ps; [ fonttools ])).drvPath
')
nix shell $drv -c python <(echo "$script") myfont.otf > myfont-notrak.otf