Jadpo is experimental and not ready for production. These docs follow the compiler's main branch as of 5 Nov 2026. What's built · Install 0.3.0
jadpo
ReferenceErrors

ErrorsConfiguration · rule

configuration.type_unsupported

Setting type cannot be read from one variable.

Area 10, Configuration; not declinable; the next step is usually the agent's.

example
config {    admin_emails: List<Email>}
jadpo checkcheck failed: 1 error, 1 file

error admin_emails can't be a List<Email>

--> main.jadpo:2:19

  |2 |     admin_emails: List<Email>  |                   ^^^^^^^^^^^ not read from one variable
reason
A setting is read from one environment variable, so its type must be decodable from one piece of text: text-based types, Int, Decimal, Bool, Uuid, Email, Url, IpAddress, Duration, Instant, CalendarDate, ModelId, Money, Certificate and enums. A list holds any number of values, and a variable holds one; make each value a setting of its own.
next
Split admin_emails into settings of those types (agent)
rule
configuration.type_unsupported
help
https://jadpo.dev/docs/errors/configuration.type_unsupported

Markdown for agents: /docs/errors/configuration.type_unsupported.md.Built from Jadpo main at aee2e8f.