systemd-environment-d-generator, 30-systemd-environment-d-generator - Load variables specified by

       systemd-environment-d-generator is a systemd.environment-generator(7) that reads environment
       configuration specified by environment.d(5) configuration files and passes it to the systemd(1) user
       manager instance.

       systemd-environment-d-generator, 30-systemd-environment-d-generator - Load variables specified by
       environment.d

systemd(1), systemctl(1), systemd.environment-generator(7), systemd.generator(7)

systemd 257.7                                                                 SYSTEMD-ENVIRONMENT-D-GENERATOR(8)

/usr/lib/systemd/user-environment-generators/30-systemd-environment-d-generator