# EnvironmentFile= is read when systemd spawns each Exec process, NOT once when
# the unit is activated, so ExecStart= consumes the file ExecStartPre= wrote in
# the SAME activation -- verified on systemd 252 (EL9) with a transient unit:
# the first activation, with no env file on disk beforehand, delivered the
# ExecStartPre-written value to ExecStart, and a second activation saw the fresh
# value rather than the previous one. Same-activation consumption is the design
# here, not an accident of ordering.
[Service]
ExecStartPre=/usr/local/cpanel/bin/comet_tmpdir_picker
EnvironmentFile=-/run/backup-tool-tmpdir.env