Bug#905135: task-kde-desktop is not installable

[Thue <thuejk@gmail.com>]

Package: task-kde-desktop
Severity: important

Dear Maintainer,
I get this error when trying to install task-kde-desktop on a fully updated Debian Sid system:

t@h ~> sudo apt-get install task-kde-desktop
Reading package lists... Done
Building dependency tree       
Reading state information... Done
Some packages could not be installed. This may mean that you have
requested an impossible situation or if you are using the unstable
distribution that some required packages have not yet been created
or been moved out of Incoming.
The following information may help to resolve the situation:

The following packages have unmet dependencies:
 task-kde-desktop : Depends: kde-standard but it is not going to be installed
                    Recommends: kdeaccessibility but it is not going to be installed
                    Recommends: k3b but it is not going to be installed
                    Recommends: k3b-i18n but it is not going to be installed
                    Recommends: plasma-nm but it is not going to be installed
                    Recommends: apper but it is not going to be installed
                    Recommends: dragonplayer but it is not going to be installed
E: Unable to correct problems, you have held broken packages.
t@h ~>

Regards, Thue

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

Kernel: Linux 4.17.0-1-amd64 (SMP w/4 CPU cores)
Locale: LANG=en_US.UTF-8, LC_CTYPE=en_US.UTF-8 (charmap=UTF-8), LANGUAGE=en_US:en (charmap=UTF-8)
Shell: /bin/sh linked to /bin/dash
Init: systemd (via /run/systemd/system)
LSM: AppArmor: enabled

Versions of packages task-kde-desktop depends on:
pn  kde-standard  <none>
ii  sddm          0.18.0-1
ii  task-desktop  3.44
ii  tasksel       3.44

Versions of packages task-kde-desktop recommends:
pn  apper                   <none>
pn  dragonplayer            <none>
ii  gimp                    2.10.2-1
ii  hunspell-en-us          1:2018.04.16-1
ii  hyphen-en-us            2.8.8-5
pn  k3b                     <none>
pn  k3b-i18n                <none>
pn  kdeaccessibility        <none>
ii  kdesudo                 3.4.2.4-2+b1
ii  libreoffice             1:6.1.0~rc2-3
pn  libreoffice-help-en-us  <none>
ii  mythes-en-us            1:6.0.5-1
ii  orca                    3.28.1-2
pn  plasma-nm               <none>
ii  system-config-printer   1.5.11-2

task-kde-desktop suggests no packages.