Re: Some environment variables disappeared for getenv

["Iñigo Serna" <inigoserna@gmx.com>]

Hi,

> [...]
> It's started through a user systemd service that hasn't changed 
> in
> years.

You could add more new "Enviroment" lines to your systemd unit 
file, f.e.

    Environment=XDG_SESSION_TYPE=wayland

Best regards,
Iñigo

On 15 September 2022 at 15:28 +02, Julien Cubizolles 
<j.cubizolles@free.fr> wrote:

> <tomas@tuxteam.de> writes:
>
>> On Thu, Sep 15, 2022 at 01:12:02PM +0200, Julien Cubizolles 
>> wrote:
>>> I used to rely on getenv to get the value of 
>>> $XDG_SESSION_TYPE. I
>>> noticed that recently:
>>> --8<---------------cut 
>>> here---------------start------------->8---
>>> (getenv "XDG_SESSION_TYPE")
>>> --8<---------------cut 
>>> here---------------end--------------->8---
>>> returns nil, because this variable isn't in 
>>> process-environment
>>> 
>>> What is the reason for dropping this particular variable ? How 
>>> can I get
>>> the value of this variable from within Emacs ?
>>
>> The process that starts your Emacs has to pass it on (that's 
>> the idea
>> of environment variables). If things changed, this is where you 
>> have
>> to look.
>>
>> How is your Emacs started?
>
> It's started through a user systemd service that hasn't changed 
> in
> years.
>
> --8<---------------cut 
> here---------------start------------->8---
> [Service]
> Type=forking
> Environment='XMODIFIERS=""'
> ExecStart=/usr/bin/emacs --daemon
> ExecStop=/usr/bin/emacsclient --eval "(progn (setq 
> kill-emacs-hook daemon-kill-emacs-hook) (kill-emacs))"
> Restart=on-failure
> Environment="DISPLAY=:%i"
> TimeoutStartSec=0
> --8<---------------cut 
> here---------------end--------------->8---
>
> In the getenv docstring, there is a mention of variable
> process-environment, containing a list of environment variables, 
> not
> refered to in the systemd service file but nonetheless 
> accessible to
> getenv (some are XDG variables like XDG_DATA_DIRS). Maybe
> XDG_SESSION_TYPE has been dropped from this list ?


-- 
Iñigo Serna