Comment 4 for bug 1464913

I'm afraid my terminal scrollback history isn't long enough for me to see the original error. Reinstalling libjack-jackd2-dev afterwards was not a possible solution due to the vast quantity of software it wished to remove!

I wish I knew exactly what I did but after installing all the other dependencies, apart from the jack libraries and it would remove half my system, running the build-dep command just worked without complaining about dependacies that aren't going to be installed and without trying to remove any other packages.

Looking around I did notice this, which seems to be a library for Port Audio using Jack2, which is what seems to be installed on most systems as far as I can tell.....

x$ apt-cache show libportaudio2
Package: libportaudio2
Architecture: amd64
Version: 19.6.0-1
Multi-Arch: same
Priority: optional
Section: universe/libs
Source: portaudio19
Origin: Ubuntu
Maintainer: Ubuntu Developers <email address hidden>
Original-Maintainer: Debian VoIP Team <email address hidden>
Bugs: https://bugs.launchpad.net/ubuntu/+filebug
Installed-Size: 210
Depends: libasound2 (>= 1.0.16), libc6 (>= 2.15), libjack-jackd2-0 (>= 1.9.10+20150825) | libjack-0.125
Filename: pool/universe/p/portaudio19/libportaudio2_19.6.0-1_amd64.deb
Size: 64556
MD5sum: 34190a46175b757eac9bec5884b347f7
SHA1: 9e33d7302ca0e2a280c8c936e69a33b5d5db12b0
SHA256: e192f31b52833eb17881ae81c9ff0eb3469da6195d1fa30bdd3873a23bf058ee
Homepage: http://www.portaudio.com/
Description-en_GB: Portable audio I/O - shared library
 PortAudio is a portable audio I/O library designed for cross-platform
 support of audio. It uses a callback mechanism to request audio
 processing. Audio can be generated in various formats, including 32 bit
 floating point, and will be converted to the native format internally.
 .
 This package contains the shared library.
Description-md5: a71bbbd00a98fe093b85cc97ff79e9ae
Task: xubuntu-desktop, lubuntu-gtk-desktop, lubuntu-desktop, ubuntustudio-desktop
Supported: 3y