MIT with LGPL-2.1 components
The original Inmis portions by Draylar are licensed under the MIT License. The Forge and NeoForge ports are maintained by nullifyac.
Backpacked-derived augment implementations, placement and sound helpers, mixins, translation content and GUI textures retain the GNU Lesser General Public License v2.1. These portions are adapted from Backpacked by MrCrayfish and contributors; their existing license terms remain applicable.
The mod JARs include THIRD-PARTY-NOTICES.txt, LICENSES/Inmis-MIT.txt and LICENSES/Backpacked-LGPL-2.1.txt. Per-file notices identify the affected components. Corresponding Java sources and source PNG resources are available in the source repository and matching source archives.
The Forge 1.12.2 distribution also embeds Java 8 compatible parts of SpongePowered Mixin 0.8.5 under MIT and retains its dependency license as LICENSE.txt.
Credits, per-file notices and corresponding source:https://github.com/nullifyac/inmis-forge-neoforge/blob/main/THIRD-PARTY.md
MIT license text:https://github.com/nullifyac/inmis-forge-neoforge/blob/main/forge-1.12.2/inmis/src/main/resources/LICENSES/Inmis-MIT.txt
LGPL-2.1 license text:https://github.com/nullifyac/inmis-forge-neoforge/blob/main/forge-1.12.2/inmis/src/main/resources/LICENSES/Backpacked-LGPL-2.1.txt
Original Inmis:https://github.com/Draylar/inmis
Backpacked source used for the adapted components:https://github.com/MrCrayfish/Backpacked/tree/73db4d7cd729ebcd05b4cab8d7c0f7be9eeaa19a