Bug#856122: calf-plugins: UI not loaded in ardour (works in the standelone app)

[Jean-Marie Favreau]

Package: calf-plugins
Version: 0.0.60-4
Severity: important

Dear Maintainer,

I'm using ardour with jack, and I wanted to run the calf-plugins as LV2 plugins.
Unfortunately, even if the plugins are correctly loaded into ardour, the GUI 
cannot be loaded. Here is the message produced in the console:
suil error: Failed to instantiate UI <http://calf.sourceforge.net/plugins/gui/gtk2-gui>
 in /usr/lib/lv2/calf.lv2/calflv2gui.so

However, interfaces are working in the calfjackhost. Thus I suspect a bug in
the LV2 part of this package.


-- System Information:
Debian Release: 9.0
  APT prefers unstable
  APT policy: (500, 'unstable')
Architecture: amd64 (x86_64)
Foreign Architectures: i386

Kernel: Linux 4.9.0-2-amd64 (SMP w/4 CPU cores)
Locale: LANG=fr_FR.UTF-8, LC_CTYPE=fr_FR.UTF-8 (charmap=UTF-8)
Shell: /bin/sh linked to /bin/dash
Init: systemd (via /run/systemd/system)

Versions of packages calf-plugins depends on:
ii  libatk1.0-0                       2.22.0-1
ii  libc6                             2.24-9
ii  libc6-udeb [libc6]                2.19-10
ii  libcairo2                         1.14.8-1
ii  libexpat1                         2.2.0-2
ii  libfluidsynth1                    1.1.6-4
ii  libfontconfig1                    2.11.0-6.7+b1
ii  libfreetype6                      2.6.3-3+b2
ii  libgcc1                           1:6.3.0-8
ii  libgdk-pixbuf2.0-0                2.36.5-2
ii  libglib2.0-0                      2.50.3-1
ii  libgtk2.0-0                       2.24.31-2
ii  libjack-jackd2-0 [libjack-0.116]  1.9.10+20150825git1ed50c92~dfsg-4+b1
ii  libjs-jquery                      3.1.1-2
ii  libjs-jquery-colorbox             1.6.3-1
ii  libpango-1.0-0                    1.40.3-3
ii  libpangocairo-1.0-0               1.40.3-3
ii  libpangoft2-1.0-0                 1.40.3-3
ii  libstdc++6                        6.3.0-8

Versions of packages calf-plugins recommends:
ii  gtk2-engines-pixbuf  2.24.31-2

Versions of packages calf-plugins suggests:
ii  ladish  1+dfsg0-5+b3

-- no debconf information