# \#configs

**URL:** https://erlangforums.com/tag/configs/235.md

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## [How read config env in an other config file?](https://erlangforums.com/t/how-read-config-env-in-an-other-config-file/3837)

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**Author:** [@wangcw](https://erlangforums.com/u/wangcw)\
**Replies:** 3\
**Last updated:** [July 18, 2024, 3:34am UTC](https://erlangforums.com/t/how-read-config-env-in-an-other-config-file/3837 "2024-07-18T03:34:47Z")

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help me about an issue: rebar3.config {relx, \[{release, \[\] \[sasl\]}, {mode, minimal}, {extended\_start\_script, true}, {sys\_config, "config/sys.config"}, {vm\_args, "config/vm.args"}, {overlay, \[{copy, "config/prod\_…

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## [Where exactly sys.config.src is parsed and OS env variables replacement takes place?](https://erlangforums.com/t/where-exactly-sys-config-src-is-parsed-and-os-env-variables-replacement-takes-place/3520)

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**Author:** [@qoocku](https://erlangforums.com/u/qoocku)\
**Replies:** 1\
**Last updated:** [April 27, 2024, 12:59am UTC](https://erlangforums.com/t/where-exactly-sys-config-src-is-parsed-and-os-env-variables-replacement-takes-place/3520 "2024-04-27T00:59:06Z")

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I mean: in which Erlang module, maybe ERTS C source file etc.? Where is it?

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## [Configuration of Erlang system](https://erlangforums.com/t/configuration-of-erlang-system/432)

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**Author:** [@garazdawi](https://erlangforums.com/u/garazdawi)\
**Replies:** 43\
**Last updated:** [May 15, 2023, 5:31pm UTC](https://erlangforums.com/t/configuration-of-erlang-system/432 "2023-05-15T17:31:04Z")

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Hello! I’ve long thought that the way that we configure Erlang systems today is not ideal. I’ve done some attempts at making an improvement, but so far nothing has been good enough to warrant a PR. Some of the things t…