Have to be in same directory as $RULES to rekey

[n8henrie]

With the current implementation of parsing the secrets from secrets.nix, some functions of the CLI tool need to be run from secretsDir (because FILES doesn't get the full path, at least this is part of the problem).

agenix/pkgs/agenix.sh

Line 151 in ea17cc7

FILES=$( (@nixInstantiate@ --eval -E "(let rules = import $RULES; in builtins.concatStringsSep \"\n\" (builtins.attrNames rules))" | @sedBin@ 's/"//g' | @sedBin@ 's/\\n/\n/g') || exit 1)

Seems like this should at least be documented -- and perhaps a $(dirname $RULES) could pass the full path to edit and make it work from other directories.