HOCON: impossible to override NUMERIC value from ENV or properties

[Dkhusainov]

Describe the bug
Library does not correctly resolve NUMBER(probably BOOLEAN too) types when they're set via ENV or properties(since it's all strings)

To Reproduce

config.conf

my.config.value: ${?MY_CONFIG_VALUE}

MyConfig.kt

@Serializable
class MyConfig(
  val value: Long
)

env:
MY_CONFIG_VALUE=1

parsing exception:
SerializationException: env variables required to be a NUMBER

Expected behavior
Config is correctly parsed

Environment

• Library version: [e.g. 1.1.0]

[sandwwraith]

Original HOCON library supports that (https://github.com/lightbend/config#optional-system-or-env-variable-overrides), so I thought it should be available out of the box... Turns out it isn't

[ahmadshabib]

@sandwwraith Hey, is this still up for grabs? if yes any head up I need to know before starting?

[sandwwraith]

@ahmadshabib Yeah. Just follow guide https://github.com/Kotlin/kotlinx.serialization/blob/master/CONTRIBUTING.md#submitting-prs , everything should be self-explanatory. I think this feature does not require a configuration flag or public API change, so no design space here.

[peterfigure]

any workarounds for this?

[tobiaslieber]

Hi,
I took the freedom to implement a possible solution in #1795 .