Lock File

A lock file (pakku-lock.json) is an automatically generated file used by Pakku to define all properties of a modpack needed for its development.

It should be located in your modpack directory (.minecraft).

This file is not intended to be modified manually.

Properties

target

The targeted platform of the modpack.

Possible value	Description
`curseforge`	Pakku will use the CurseForge platform as a target of the modpack.
`modrinth`	Pakku will use the Modrinth platform as a target of the modpack.
`multiplatform`	Pakku will use both CurseForge and Modrinth platforms as a target of the modpack.

Type: String

mc_versions

The Minecraft versions supported by the modpack.

Type: List<String>

loaders

A map of loader names to loader versions supported by the modpack.

Type: Map<String, String>

projects

A list of projects included in the modpack.

Type: List< Project >

lockfile_version

The version of the lock file.

Type: Int

21 October 2025