Package

A psibase package is a zip archive that contains the following files:

meta.json

Field	Type	Description
name	String	The name of the package
version	String	The package version. Must conform to Semantic Versioning 2.0.0.
description	String	The package description
depends	Array	Other packages that this package depends on
depends[n].name	String	The name of the other package
depends[n].version	String	An expression that describes the compatible versions of the dependency
accounts	Array	Accounts that are created by this package

The version field in the dependency list is a string that holds a comma separated list of patterns: [op] version, [op] version, .... The version can be a be a full semantic version, the major and minor versions, or just the major version. If the components of a prefix match the corresponding components of a non-prerelease version, it is considered an exact match.

^ matches any compatible version that is not older than the version given. This is the default.
~ only allows patch updates.
Comparison operators =, != , <, <=, >, <= are evaluated according to semantic version precedence.
Logical operators && and || can be used to combine multiple expressions. && has higher precedence than ||
Expressions can be grouped with ()

Examples:

1: matches 1.0.0 and 1.3.1, but not 2.0.0 or 1.2.0-rc1
>=1.1.2, <2.0.0 matches 1.1.3 and 2.0.0-beta
>1, <3 matches all versions with major version 2, including prereleases

service/<service>.wasm

A wasm file that will be deployed to the service account.

service/<service>.json

Properties associated with a service.

Field	Type	Description
flags	Array	Can contain the following strings: `"allowSudo"`, `"allowWriteNative"`, `"isSubjective"`, `"allowWriteSubjective"`, `"canNotTimeOut"`, `"canSetTimeLimit"`, `"isAuthService"`, `"forceReplay"`, `"allowSocket"`
server	String	The account that will handle HTTP requests for the service

data/<service>/*

Files that will be uploaded to the service's namespace within the the sites app, accessible from the service's subdomain.

script/postinstall.json

Contains an array of actions that will be executed after the service is deployed.