Bug#954352: pymca: Missing dependency "python3-scipy", probably in "python3-silx"

[Jerome Kieffer]

Package: pymca
Version: 5.4.3+dfsg-1
Severity: grave
Justification: renders package unusable

Dear Maintainer,

I installed "pymca" on a debian 10 system, this draggs the dependencies:
* python3-pymca5
* python3-silx

The package python3-silx apparently requires python3-scipy, the graphical user
interface does not load and crashed at start up.

Cheers,

Jerpme



-- System Information:
Debian Release: 10.3
  APT prefers stable
  APT policy: (800, 'stable'), (500, 'stable-updates')
Architecture: amd64 (x86_64)
Foreign Architectures: i386, armhf

Kernel: Linux 4.19.0-8-amd64 (SMP w/8 CPU cores)
Kernel taint flags: TAINT_PROPRIETARY_MODULE, TAINT_OOT_MODULE, TAINT_UNSIGNED_MODULE
Locale: LANG=fr_FR.utf8, LC_CTYPE=fr_FR.utf8 (charmap=UTF-8), LANGUAGE=fr_FR.UTF8:fr:en_GB.UTF8:en (charmap=UTF-8)
Shell: /bin/sh linked to /bin/bash
Init: systemd (via /run/systemd/system)
LSM: AppArmor: enabled

Versions of packages pymca depends on:
ii  python3         3.7.3-1
ii  python3-numpy   1:1.16.2-1
ii  python3-pymca5  5.4.3+dfsg-1

pymca recommends no packages.

pymca suggests no packages.

-- no debconf information