If the app fails before registering, dbus-broker won't try to start it again

[amezin]

GNOME Shell version

43.4

Session type

Wayland (echo $WAYLAND_DISPLAY output is non-empty)

Special configuration

• High DPI
• More than one monitor

ddterm version

44 (pre-release)

Linux distro

Arch Linux

ddterm settings dump

[/]
audible-bell=true
background-color='rgb(23,20,33)'
background-opacity=0.90000000000000002
bold-color='#000000'
bold-color-same-as-fg=true
bold-is-bright=true
command='user-shell'
cursor-background-color='#000000'
cursor-colors-set=false
cursor-foreground-color='#ffffff'
custom-command=''
custom-font='Ubuntu Mono 10'
ddterm-activate-hotkey=@as []
ddterm-toggle-hotkey=['F12']
detect-urls=true
force-x11-gdk-backend=false
foreground-color='rgb(208,207,204)'
hide-animation='linear'
hide-animation-duration=0.14999999999999999
hide-window-on-esc=false
highlight-background-color='#000000'
highlight-colors-set=false
highlight-foreground-color='#ffffff'
new-tab-front-button=true
notebook-border=false
override-window-animation=true
palette=['rgb(23,20,33)', 'rgb(192,28,40)', 'rgb(38,162,105)', 'rgb(162,115,76)', 'rgb(18,72,139)', 'rgb(163,71,186)', 'rgb(42,161,179)', 'rgb(208,207,204)', 'rgb(94,92,100)', 'rgb(246,97,81)', 'rgb(51,209,122)', 'rgb(233,173,12)', 'rgb(42,123,222)', 'rgb(192,97,203)', 'rgb(51,199,222)', 'rgb(255,255,255)']
panel-icon-type='toggle-and-menu-button'
scroll-on-output=false
scrollback-unlimited=true
shortcut-set-custom-tab-title=@as []
shortcut-toggle-maximize=['F11']
shortcut-window-hide=@as []
shortcuts-enabled=true
show-animation='linear'
show-animation-duration=0.14999999999999999
show-scrollbar=true
tab-expand=false
tab-label-width=0.10000000000000001
tab-policy='always'
tab-title-template='{{#if switch-shortcut}}{{switch-shortcut}} {{/if}}{{window-title}}'
theme-variant='dark'
transparent-background=true
use-system-font=true
use-theme-colors=false
window-maximize=false
window-monitor='connector'
window-monitor-connector='eDP-1'
window-position='top'
window-size=0.79947916666666663
window-skip-taskbar=true

Description

During development:

1. Make some changes to ddterm code and make install
2. Try to open ddterm. It doesn't start - turns out changes were bad
3. Fix, make install again
4. Press F12 and... nothing happens. dbus-broker doesn't try to start ddterm again.

The same will also happen if ddterm fails to start because of missing GObject dependencies (VTE).

However, with dbus-daemon everything works correctly.

[amezin]

Systemd activation #369 may help mitigating this.

GNOME may sometimes be running without systemd... https://wiki.gentoo.org/wiki/GNOME/GNOME_without_systemd/Gentoo but dbus-broker seems to require systemd for activation

[amezin]

Something related bus1/dbus-broker#209

[amezin]

Systemd activation solves this issue for dbus-broker...
But now dbus-daemon can't detect the failure properly - systemd unit fails to start, but dbus-daemon only detects it by timeout (2 minutes)

[amezin]

So dbus-daemon can't detect failures for systemd activation:

• https://gitlab.freedesktop.org/dbus/dbus/-/issues/458
• RFE: allow discerning a job that completes successfully because job is conditioned out from one that completes actually successfully systemd/systemd#21520

Check the type of session dbus daemon and avoid systemd activation for dbus-daemon? This is becoming too complex

[amezin]

On the other hand, 2 minute timeout with dbus-daemon+systemd activation looks better than seemingly forever with dbus-broker and no systemd unit.