Source-checkedQuality of life & UI

FermiumBooter

by fonnymunkey · for Minecraft

Simplistic mixin mod utility to allow developers to load mixins both early and late

321KDownloads
11d agoLast updated
LGPL-3.0-or-laterLicense
ForgeLoaders

About FermiumBooter

From Modrinth

Simplistic mixin mod utility to allow developers to load mixins both early and late

FermiumBooter is a mixin mod utility to allow developers to load mixins both early and late, allowing for modifying classes that normally could not be modified otherwise.

Current features include;

  • Enqueue mixins to be applied both early and late, to allow for for modifying Vanilla/Forge classes, as well as mod classes
  • @MixinConfig annotation system to expand on the Forge @Config system, to allow for automatic mixin enqueue based on config toggles
  • Optional compatibility handling through the config annotation system to allow developers to define required/incompatible mods for specific mixins
  • Logged warnings when a mixin using the config annotation system fails compatibility checks
  • Optional forced mixin disabling when a mixin using the config annotation system fails compatibility checks
  • Ingame (disable-able) warning rendering when mixins using the config annotation system fail compatibility checks
  • Enable/disable enqueued mixins prior to application through the use of a Supplier, to allow developer control over optional mixins
  • Utility method to check if a ModID is present similar to Loader.isModLoaded() however usable during mixin enqueue/early mixin application unlike Loader.isModLoaded()
  • Disallow other FermiumBooter enqueued mixins from applying, for testing or tweaking purposes
  • Shadows Mixin 0.8.7 and MixinExtras 0.4.1

For developer usage:

In your IFMLLoadingPlugin init, instead of "Mixins.addConfiguration("mixinConfigName")", use "FermiumRegistryAPI.enqueueMixin("mixinConfigName"). If you are registering it as a late-loaded mixin use "FermiumRegistryAPI.enqueueMixin(true, "mixinConfigName")". That is all that is required, and FermiumBooter takes care of the rest. For additional utilities as described previously, all are documented in code with explanations of usage and purpose.

If you have any issues/suggestions/requests, please post them to the Github issue tracker linked above.

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Highlights

From source data

Game versions

Built for Minecraft 1.12.2.

Loaders

Runs on Forge.

Footprint

Rated a light load on a server.

FermiumBooter on Nxeon

From our catalogue
One-click install
Supported on Nxeon Minecraft servers. We download it from Modrinth, place it, and restart the server.
Server side
Optional on the server
Server type needed
Forge
Server load
light
Smallest plan we suggest
Minecraft — 2 GB (2 GB RAM). This follows our own load rating above, not a benchmark.
Latest build
1.6.3, released 2026-10-24

Game versions by loader

LoaderGame versionsNewest
Forge1.12.21.12.2

From 10 recorded builds of FermiumBooter.

Recent builds

BuildReleasedGame versionsLoaders
1.6.32026-10-241.12.2Forge
1.6.22026-10-221.12.2Forge
1.6.12026-10-211.12.2Forge
1.6.02026-10-201.12.2Forge
1.5.32026-10-111.12.2Forge
1.4.12025-11-211.12.2Forge

Run FermiumBooter on a Minecraft server

Pick a server or deploy a new one above; it is installed in one click.

What kind of mod it is

From the catalog
Listed on Modrinth as “Mods”

Quality of life & UI

Small conveniences, tweaks and interface improvements players notice straight away.

Works on a server

From source side support

Modrinth lists server-side support for FermiumBooter as optional: it can run on a server, but isn’t required there.

Compatibility

Game
Minecraft
Loaders
Forge
Runs on
Serveroptional on the server
Game versions
1.12.2

Verified at the source

  • ✓ModrinthOfficial listing, checked 2026-10-25Open ↗
  • ✓Authorfonnymunkey, as published on Modrinth
  • ✓LicenseLGPL-3.0-or-laterFree

FermiumBooter, answered

Generated from the mod’s own source data.

Do my players need to install FermiumBooter?

Modrinth lists server-side support for FermiumBooter as optional: it can run on a server, but isn’t required there.

Which loaders does it support?

Forge.

Is it free?

Yes. FermiumBooter is free to download from Modrinth. Its license is LGPL-3.0-or-later.

How do I add it to my Nxeon server?

Use “Add to a server” on this page, or open NxLabs from your dashboard. We install it, restart your server and switch it on.

NxLabs

Run FermiumBooter on a Minecraft server.

Deploy in about a minute from $4.99 a month, then add FermiumBooter in one click.