While playing with deployment I found out that some libraries provide this
feature that you can put {:system, var} in configuration and then it's
resolved at runtime. However if it's in my code, I'd have to implement it
on my own. Wouldn't it be nice if it was supported by Application module by
default? Something like:
def get_env(app, key, default \\ nil) do
case :application.get_env(app, key, default) do
{:system, var} ->
System.get_env(var) || default
rest ->
rest
end
end
Would it make sense?
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