Bug#963030: Pulseaudio backend not enabled in 1:6.0.0~ds0-3

[Zhong Jianxin <azuwis@gmail.com>]

Package: ardour
Version: 1:6.0.0~ds0-3
Severity: normal

`apt-cache show ardour` show no libpulse0 in `Depends`.

Also, build log[1] gives `--with-backends=jack,alsa,dummy`, no
pulseaudio.

[1]: https://buildd.debian.org/status/fetch.php?pkg=ardour&arch=amd64&ver=1%3A6.0.0%7Eds0-3&stamp=1592412785&raw=0

-- System Information:
Debian Release: bullseye/sid
  APT prefers unstable
  APT policy: (500, 'unstable'), (100, 'experimental')
Architecture: amd64 (x86_64)

Kernel: Linux 5.6.0-2-amd64 (SMP w/4 CPU cores)
Kernel taint flags: TAINT_FIRMWARE_WORKAROUND
Locale: LANG=en_US.UTF-8, LC_CTYPE=en_US.UTF-8 (charmap=UTF-8), LANGUAGE=en_US.UTF-8 (charmap=UTF-8)
Shell: /bin/sh linked to /bin/dash
Init: systemd (via /run/systemd/system)

Versions of packages ardour depends on:
ii  ardour-data                       1:6.0.0~ds0-3
ii  libarchive13                      3.4.3-1
ii  libasound2                        1.2.2-2.2
ii  libatkmm-1.6-1v5                  2.28.0-2
ii  libaubio5                         0.4.9-4+b1
ii  libc6                             2.30-8
ii  libcairo2                         1.16.0-4
ii  libcairomm-1.0-1v5                1.12.2-4
ii  libcurl3-gnutls                   7.68.0-1
ii  libcwiid1                         0.6.00+svn201-5
ii  libdbus-1-3                       1.12.18-1
ii  libfftw3-single3                  3.3.8-2
ii  libfluidsynth2                    2.1.2-1
ii  libfontconfig1                    2.13.1-4.2
ii  libgcc-s1                         10.1.0-4
ii  libgdk-pixbuf2.0-0                2.40.0+dfsg-5
ii  libglib2.0-0                      2.64.3-1
ii  libglibmm-2.4-1v5                 2.64.2-1
ii  libgtk2.0-0                       2.24.32-4
ii  libgtkmm-2.4-1v5                  1:2.24.5-4
ii  libjack-jackd2-0 [libjack-0.125]  1.9.12~dfsg-2+b1
ii  liblilv-0-0                       0.24.8~dfsg0-1
ii  liblo7                            0.31-1
ii  liblrdf0                          0.6.1-2
ii  libltc11                          1.3.1-1
ii  libpango-1.0-0                    1.44.7-4
ii  libpangocairo-1.0-0               1.44.7-4
ii  libpangoft2-1.0-0                 1.44.7-4
ii  libpangomm-1.4-1v5                2.42.1-1
ii  libqm-dsp0                        1.7.1-4
ii  librubberband2                    1.8.2-1
ii  libsamplerate0                    0.1.9-2
ii  libsigc++-2.0-0v5                 2.10.2-1
ii  libsndfile1                       1.0.28-8
ii  libstdc++6                        10.1.0-4
ii  libsuil-0-0                       0.10.6-1
ii  libtag1v5                         1.11.1+dfsg.1-2+b1
ii  libusb-1.0-0                      2:1.0.23-2
ii  libvamp-hostsdk3v5                2.10.0-1
ii  libvamp-sdk2v5                    2.10.0-1
ii  libwebsockets16                   4.0.16-1
ii  libx11-6                          2:1.6.9-2+b1
ii  libxml2                           2.9.10+dfsg-5+b1

Versions of packages ardour recommends:
ii  ardour-video-timeline  1:6.0.0~ds0-3

ardour suggests no packages.

-- no debconf information