Marrow

Marrow

arrow-kt libraries bundled for Minecraft

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396 Downloads
fabricforgeneoforgelibraryutility
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About this Mod

Marrow

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maven-nightly-badge
modrinth-badge
curseforge-badge
Minecraft mod that bundles Arrow for ease-of-use and installation.

Usage

Simply add it as a dependency to your Gradle project like so:

Groovy
repositories {
    mavenCentral()
    maven("https://maven.is-immensely.gay/nightly")
}

dependencies {
    def variantAttribute = Attribute.of("earth.terrarium.cloche.modLoader", String::class)

    modImplementation("xyz.naomieow:marrow:2.1.2") {
        attributes {
            // "fabric" for fabric
            // "forge" for forge
            // "neoforge" for neoforge
            attribute(variantAttribute, "fabric") 
        }
    }
}
Kotlin DSL
repositories {
    mavenCentral()
    maven("https://maven.is-immensely.gay/nightly")
}

dependencies {
    val variantAttribute = Attribute.of("earth.terrarium.cloche.modLoader", String::class.java)

    modImplementation("xyz.naomieow:marrow:2.1.2") {
        attributes {
            // "fabric" for fabric
            // "forge" for forge
            // "neoforge" for neoforge
            attribute(variantAttribute, "fabric")
        }
    }
}
Kotlin DSL (Cloche)
repositories {
    mavenCentral()
    maven("https://maven.is-immensely.gay/nightly")
}

common {
    dependencies {
        modImplementation("xyz.naomieow:marrow:2.1.2")
    }
}

And then you should have access to Arrow in your project:

val example: Either<String, Int> = Either.Left("Hello world!")

Versioning

Marrow tracks the upstream version of Arrow, which is why the initial release is tagged
as version 2.1.2. If you ever find Marrow to be outdated, please create an issue or
contact me on Discord.

Bundled Libraries

  • io.arrow-kt:arrow-core
  • io.arrow-kt:arrow-core-serialization
  • io.arrow-kt:arrow-fx-coroutines
  • io.arrow-kt:arrow-fx-stm
  • io.arrow-kt:arrow-annotations
  • io.arrow-kt:arrow-atomic
  • io.arrow-kt:arrow-collectors
  • io.arrow-kt:arrow-optics
  • io.arrow-kt:arrow-resilience

Available Versions

Marrow 2.1.2 - NeoForgerelease
MC 1.20.4, 1.20.5, 1.20.6, 1.21, 1.21.1, 1.21.2, 1.21.3, 1.21.4, 1.21.5, 1.21.6, 1.21.7, 1.21.8neoforge
July 17, 2025
Marrow 2.1.2 - Forgerelease
MC 1.20.1, 1.20.2, 1.20.3, 1.20.4, 1.20.5, 1.20.6, 1.21, 1.21.1, 1.21.2, 1.21.3, 1.21.4, 1.21.5, 1.21.6, 1.21.7, 1.21.8forge
July 17, 2025
Marrow 2.1.2 - Fabricrelease
MC 1.20.1, 1.20.2, 1.20.3, 1.20.4, 1.20.5, 1.20.6, 1.21, 1.21.1, 1.21.2, 1.21.3, 1.21.4, 1.21.5, 1.21.6, 1.21.7, 1.21.8fabric
July 16, 2025

How to Install Marrow on Your Server

1

Order Server

Order a Minecraft Java server with at least 3 GB RAM (4 GB recommended).

2

Set fabric Loader

In the panel under "Egg", select the fabric loader and matching Minecraft version (1.21.8).

3

Install Mod

Open the mod browser in the dashboard and search for "Marrow". Click "Install" – done! Alternatively, upload the .jar via SFTP to the /mods folder.

Compatibility

Mod Loaders

fabricforgeneoforge

Minecraft Versions

1.21.8, 1.21.7, 1.21.6 (+12 more)

Server-side

~ Optional

Recommended RAM

4 GB(min. 3 GB)

Frequently Asked Questions

Marrow server crashes on startup – what to do?

Most common cause: wrong fabric version or insufficient RAM. Check the server log (latest.log) for "OutOfMemoryError" or "Mixin" errors. With Mado Hosting: ensure at least 3 GB RAM is allocated and the loader matches the mod version (1.21.8). You can switch loaders with one click in the panel.

Is Marrow compatible with fabric and forge and neoforge?

Marrow officially supports fabric, forge, neoforge for Minecraft 1.21.8, 1.21.7, 1.21.6. Note: Forge and Fabric mods are NOT cross-compatible – pick one loader and stick with it. The Mado dashboard automatically detects incompatible loader combinations.

Server lagging with Marrow – how to optimize performance?

Recommended RAM: 4 GB (per 8 players). Use /spark profiler to check if Marrow consumes the most tick time. Common fixes: reduce server view-distance to 8-10, install "performant" or "starlight" as supplementary mods on Forge. With Mado Hosting, your server runs on NVMe SSDs with dedicated CPU cores for minimal latency.

Rent Modded Server

Install Marrow with just one click on your server.

Recommended RAM
4 GBab €8/mo
Min. 3 GB | +1 GB pro 8 Spieler
Create Server Now
1-Click Mod Install
NVMe SSD Storage
DDoS Protection included

Details

License
Apache License 2.0
Server-side
Optional

Supported Versions

1.21.81.21.71.21.61.21.51.21.41.21.31.21.21.21.11.211.20.6+5 more