[Pkg-utopia-maintainers] Bug#927907: flatpak directories not added to XDG_DATA_DIRS on Plasma + Wayland

[David Nebauer]

Package: flatpak
Version: 1.6.3-1
Followup-For: Bug #927907

Dear Maintainer,

I had the exact same problem immediately following installation of the
flatpak deb package, in that XDG_DATA_DIRS had not been altered.
Following a reboot, however, both the local and system
flatpack/exports/share directories were prepended to XDG_DATA_DIRS
(maybe due to /usr/lib/systemd/user-environment-generators/60-flatpak).

If I experienced the same problem the earlier reporters did, perhaps the
solution is to (a) warn the users that a reboot (or just a fresh log in)
is necessary for the XDG_DATA_DIRS variable to be updated, or perhaps
(b) so something clever to adjust the XDG_DATA_DIRS variable during
package installation.

-- System Information:
Debian Release: bullseye/sid
  APT prefers testing
  APT policy: (995, 'testing'), (750, 'stable'), (500, 'unstable'), (1, 'experimental')
Architecture: amd64 (x86_64)

Kernel: Linux 5.6.0-2-amd64 (SMP w/12 CPU cores)
Locale: LANG=en_AU.UTF-8, LC_CTYPE=en_AU.UTF-8 (charmap=UTF-8), LANGUAGE= (charmap=UTF-8)
Shell: /bin/sh linked to /usr/bin/dash
Init: systemd (via /run/systemd/system)
LSM: AppArmor: enabled

Versions of packages flatpak depends on:
ii  adduser                3.118
ii  bubblewrap             0.4.1-1
ii  libappstream-glib8     0.7.17-1
ii  libarchive13           3.4.3-1
ii  libc6                  2.30-8
ii  libdconf1              0.36.0-1
ii  libfuse2               2.9.9-3
ii  libgdk-pixbuf2.0-0     2.40.0+dfsg-5
ii  libglib2.0-0           2.64.3-1
ii  libgpgme11             1.13.1-6
ii  libjson-glib-1.0-0     1.4.4-2
ii  libostree-1-1          2020.3-1
ii  libpolkit-agent-1-0    0.105-26
ii  libpolkit-gobject-1-0  0.105-26
ii  libseccomp2            2.4.3-1+b1
ii  libsoup2.4-1           2.70.0-1
ii  libsystemd0            245.6-1
ii  libxau6                1:1.0.8-1+b2
ii  libxml2                2.9.10+dfsg-5+b1
ii  xdg-dbus-proxy         0.1.2-1

Versions of packages flatpak recommends:
ii  desktop-file-utils                                   0.24-1
ii  gtk-update-icon-cache                                3.24.20-1
ii  hicolor-icon-theme                                   0.17-2
ii  libpam-systemd                                       245.6-1
ii  p11-kit                                              0.23.20-1
ii  policykit-1                                          0.105-26
ii  shared-mime-info                                     1.15-1
ii  xdg-desktop-portal                                   1.6.0-1
ii  xdg-desktop-portal-gtk [xdg-desktop-portal-backend]  1.6.0-1+b1

Versions of packages flatpak suggests:
ii  avahi-daemon  0.8-3

-- no debconf information