env-var-defaults-api: Add public EnvVar API with default inference - #667
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janna-rn wants to merge 1 commit into
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env-var-defaults-api: Add public EnvVar API with default inference#667janna-rn wants to merge 1 commit into
janna-rn wants to merge 1 commit into
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Expose environment variable metadata — including whether each variable is
required, optional, or has a concrete default — as a first-class public API.
Public API additions:
- EnvVarDefault sealed trait: Required, Optional, Value(str)
- EnvVar case class: name, metavar, help, default
- Help.envVars(command): List[EnvVar]
Internal changes:
- Replace collectEnvOptions + EnvOptionHelp with collectEnvVars, which
carries inheritedDefault through OrElse/App/Validate to infer defaults
from withDefault / orNone
- environmentVarHelpLines unified to use collectEnvVars; --help now shows:
LOG_LEVEL=<string>
Log level (default: INFO)
CACHE_TTL=<integer>
Cache TTL in seconds (optional)
- deduplicateEnvVars helper is Scala 2.12-compatible (no List.distinctBy)
Motivation: Wanting to enumerate env vars and their
defaults. This exposes a stable public API.
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Expose environment variable metadata — including whether each variable is required, optional, or has a concrete default — as a first-class public API.
Public API additions:
Internal changes:
Motivation: Wanting to enumerate env vars and their defaults. This exposes a stable public API.