> I have no idea it this is the cause, but the immediate difference I see
> between the terminal (working) and shepherd service (not working) is the
> current working directory. In the former case it would be ~hass, in the
> latter case it would be /. Guix shell defaults to making CWD available
> in the container, so it in the service case (I am guessing) mounts /
> onto / of the containers which might mess up some permissions.
>
> You might try setting #:directory if you need the $HOME accessible, or
> pass --no-cwd if you do not.
excellent tips Tomas, thank you!
i think the essential part was specifying #:directory "/srv/hass".
FTR, this is what i ended up with:
(simple-service
'home-assistant
shepherd-root-service-type
(list
(shepherd-service
(requirement '(file-systems networking guix-daemon))
(provision '(home-assistant))
(documentation "")
;; TODO herd stop doesn't work. it leaves the process
;; running without any errors.
(start
#~(lambda _
(fork+exec-command
(list #$(file-append guix "/bin/guix")
"shell"
"--manifest=/srv/hass/manifest.scm"
"--container"
"--emulate-fhs"
"--network"
"--share=/srv/hass"
"--no-cwd"
"--expose=/gnu"
"--expose=/run/current-system"
"--"
#$(file-append bash "/bin/bash")
"-c" "cd /srv/hass && source bin/activate &&
LD_LIBRARY_PATH=/lib:/lib64 hass --config=/srv/hass/config")
#:log-file "/var/log/home-assistant.log"
#:user '#$(user-account-name *hass-user*)
#:group '#$(user-account-group *hass-user*)
#:directory "/srv/hass"
#:supplementary-groups
'#$(user-account-supplementary-groups *hass-user*)
#:environment-variables
(list (string-append "HOME=/home/"
#$(user-account-name *hass-user*)))))))))
notice that --expose=/gnu was needed, and possibly
--expose=/run/current-system, too, but i didn't double check every change.
this way the `guix shell` call will get the versions from the hass user's pull
state; i.e. i can independently decide when to upgrade the guix environment of
the hass user and process.
it's a relatively painless escape hatch to run even a non-trivial service
without packaging the app and writing the necessary service code.
--
• attila lendvai
• PGP: 963F 5D5F 45C7 DFCD 0A39
--
“An extreme optimist is a man who believes that humanity will probably survive
even if it doesn't take his advice.”
— John McCarthy (1927–2011), father of Lisp
