/var/lib/gnats/.profile is in gnats 4.1.0-3.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
1 2 3 4 5 6 | #
# Extra profile information for the gnats administator
#
PATH="/usr/lib/gnats:$PATH"; export PATH
GNATS_ROOT=/var/lib/gnats/gnats-db; export GNATS_ROOT
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