Re: [question] How to start systemd services installed by packages in Ubuntu?

[Nils Landt]

> Rodrigo Morales <me@rodrigomorales.site> hat am 22.02.2024 18:56 CET 
> geschrieben:
> I noticed that =/home/rodrigo/.guix-profile/lib= was included to the
> variable =XDG_DATA_DIRS= (see result of the command below).
> 
> #+BEGIN_SRC sh
> echo $XDG_DATA_DIRS | tr ':' '\n' | sort
> #+END_SRC
> 
> #+RESULTS:
> #+begin_example
> /gnu/store/16kl9gx8k8ygkcj7dw1xrpw2p1h1bhjh-emacs-29.1/share
> /gnu/store/23rprfqw8jy1xr0bcfvq644s2jmycdkr-gtk+-3.24.37/share
> /gnu/store/gc4q34l7yc63qv2qcqq7avmf34hdpbwp-shared-mime-info-1.15/share
> /gnu/store/m26kdkgr4c09wc0djn2pgcz9jl7j2rw1-glib-2.72.3/share
> /home/rodrigo/.guix-home/profile/share
> /home/rodrigo/.guix-profile/lib
> /home/rodrigo/.guix-profile/share
> /home/rodrigo/.guix-profile/share
> /home/rodrigo/.local/share/flatpak/exports/share
> /usr/share/gnome
> /usr/share/i3
> /var/lib/flatpak/exports/share
> /var/lib/snapd/desktop
> #+end_example

This shouldn't be due to the changes you made - ManagerEnvironment only sets it 
for the systemd user management process, not for any spawned processes and 
especially not your shell.
You mentioned below that you removed ~/.config/systemd/user.conf, is 
/home/rodrigo/.guix-profile/lib still in XDG_DATA_DIRS after that?

> The problem I noticed was that applications that were installed
> through =guix package -i= took more than usual to start.
> 
> Inkscape took 25 seconds to print the version.
> 
> #+BEGIN_SRC text
> $ time /home/rodrigo/.guix-profile/bin/inkscape --version
> 
> (inkscape:42859): dbind-WARNING **: 11:58:15.650: AT-SPI: Error retrieving 
> accessibility bus address: org.freedesktop.DBus.Error.NoReply: Did not 
> receive a reply. Possible causes include: the remote application did not send 
> a reply, the message bus security policy blocked the reply, the reply timeout 
> expired, or the network connection was broken.
> Inkscape 1.2.1 (9c6d41e410, 2022-07-14)
> /home/rodrigo/.guix-profile/bin/inkscape --version  0.02s user 0.03s system 
> 0% cpu 25.072 total
> $ echo $?
> 0
> #+END_SRC

I'm almost afraid to hear the answer, but how many files are in 
/home/rodrigo/.guix-profile/lib (including all subdirectories)?

My best guess here is that inkscape / thunar enumerate all files in 
XDG_DATA_DIRS on startup, and so they become slow if there's a lot of files. 
But, as mentioned above, setting ManagerEnvironment should not affect 
XDG_DATA_DIRS for them!