How to customize the CONFIG_FORCE_ prefix

[crash-g]

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The documentation says that by setting the JVM property config.override_with_env_vars to true it is possible to use environment variables to override configuration values, but these variables must be prefixed with CONFIG_FORCE_.

However, in our use case we would rather not need to add a prefix, or alternatively we would like to customize it. Is it possible? Thanks!

[havocp]

you can put ${SOME_ENV_VAR_NAME} in your application.conf if you want to just have certain fields that are set via env var, that's the typical use.

If you want to be able to override ANY env var, currently it requires CONFIG_FORCE prefix (because without the prefix, the env vars are used, but only as fallback not as override)

[crash-g]

Actually, we would like the following:

• being able to override any variable without modifying the properties file
• optionally disabling or customizing the prefix for environment variables

I am aware of the possibility to override specific variables as you describe, we are going to use it as a fallback if there is no way to do what stated above.

[havocp]

there isn't a current feature for those things

[crash-g]

Thanks. Just to know: would you accept a PR that lets users configure the prefix using a JVM property?

(I have not looked at the code so I don't know how hard it is to implement)

[havocp]

It seems reasonable to me I guess, open to other people's takes

[crash-g]

Alright, I'll try to have a go at it as soon as I've got time.

By the way, this is a very nice library, very ergonomic to use. Thanks!