Release notes

45

• Deployment language: a system deployed from a template must set its configuration options of a plural type with a static keyset, as a custom system already had to.
• System-type contract: a system type can provide a static interface. A wiring connects it with = provide static; = provide '<library>' is unchanged.
• Wiring language: the compatibility of interface and model types between provider and consumer is enforced as a constraint.
• Platforms: darwin-arm64 replaces darwin-x64; the linux-aarch64 build is no longer published.
• The package ships an agent guide (AGENTS.md).

Upgrade: a system deployed from a template requires every configuration option of a plural type with a static keyset, such as the 'integers' and 'texts' options of a connector system. ./alan upgrade does not add them; packaging the deployment reports each missing one, for example missing entry `integers` in 'options'. Add each option to deployment.alan: ( ) when its keyset in wiring.alan is empty, otherwise an entry for every key, with the value that system needs:

'pdf-generator'
	configuration: 'default'
		'slow speed' = 30
		'slow time'  = 60
		'integers'   = ( )
		'texts'      = (
			'pdf_generator_url' = "http://127.0.0.1:5044/v1/generate"
		)