https://ftp.debian.org/debian/pool/main/j/jackd2/
Index of /debian/pool/main/j/jackd2
index ofdebianpoolmainj
https://packages.debian.org/bullseye/libjack-jackd2-dev
Debian -- Details of package libjack-jackd2-dev in bullseye
JACK Audio Connection Kit (development files)
debiandetailspackagedevbullseye