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start-cosmic: update values of existing env vars

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I could not find any consistent documentation on _which_ environment
variables a DE should populate. GNOME just imports everything[0] from
the current DE-startup-session. KDE imports some DE and KDE specific
variables but again, this isn't defined anywhere (that I could find)
on places like <freedesktop.org>. So instead, lets just update
existing ones.
[0]: d14f6db15e
This commit is contained in:
Pratham Patel 2026-01-14 19:55:03 +05:30
parent 957fd526cb
commit de27085e49
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1 changed files with 19 additions and 1 deletions
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@ -54,8 +54,26 @@ if [ -d "/run/user/$(id -u)/keyring" ]; then
fi
if command -v systemctl >/dev/null; then
# set environment variables for new units started by user service manager
# Import some variables that we explicitly want to have available
# in the user session.
systemctl --user import-environment XDG_SESSION_TYPE XDG_CURRENT_DESKTOP DCONF_PROFILE SSH_AUTH_SOCK
# For environment variables already imported into the user's
# session, if the value imported differs from the value in this
# environment, update it.
existing_env_vars=( $(systemctl --user show-environment | tr '\n' ' ') )
for env_var in "${existing_env_vars[@]}"; do
env_var_name="$(echo "${env_var}" | awk -F '=' '{print $1}')"
env_var_val_str_to_compare="${env_var_name}=${!env_var_name:-}"
if [[ "${env_var}" != "${env_var_val_str_to_compare}" ]]; then
# Update only if the value in current environment is non-empty
env_var_unassigned_str="${env_var_name}="
if [[ "${env_var_val_str_to_compare}" != "${env_var_unassigned_str}" ]]; then
systemctl --user import-environment "${env_var_name}" ||:
fi
fi
done
fi
# Run cosmic-session