[erlang-questions] Environment variables in sasl.config

[Dave Smith]

Greetings,

I've been working through Joe Armstrong's book -- nice work, Joe! One
thing that I'm trying to sort out is how avoid hard coding paths into
my sasl.config. I want my log files to be output to a directory, as
defined by an environment variable in the script that starts up my
erlang application. Unfortunately, it seems that only erlang terms can
be used in sasl.config, not functions (such as os:getenv/1). Is there
something I'm missing here?

Thanks,

D.