Longhouse

Longhouse is the Ezomic modpack for Valheim. It contains the Ezomic mods at the versions used by the Ezomic setup, which is the same set the Ezomic server runs.

There is no DLL in this package. It is a manifest naming each mod at an exact version, plus an icon, this file and a changelog, so installing it through a mod manager installs the mods themselves.

Thunderstore page · Changelog

What's in it

Mod	What it does
Longhouse Core	Shared library for the rest: the multiplayer version check, host config sync, and arbitration of extra inventory rows.
Yoke	Bigger stacks, earned biome by biome.
Rist	A character level beside the skills, carved into runestones you choose and deepen.
Utangard	Biomes nobody in your group has earned starve you: food burns away, buffs are refused.
Vaettir	Grow a forest spirit from an ancient seed, build it a home, and it sorts your chests.
Dyrr	A join policy for servers, plus client-side protection against loading a character into the wrong world.
Sinka	Snap points for chests, fences and anything else that will not line up.
Kynda	Load a smelter, kiln or fire several at a time. Fewer trips, the same metal out.
Taum	Farm animals follow: Alt+E on a tamed boar or hen and it walks with you.
Dvala	A dungeon left alone for thirty in-game days fills back up.
Lur	Sound a horn in one of Hildir's dungeons and its mini-boss wakes again.
Skaft	Hammer repair reaches further the higher your Crafting skill.
Vaka	Fires keep while you are away. A single absence costs one fuel, however long it was.

The exact versions are in manifest.json, and Thunderstore lists them on the pack's page. Each mod has its own README and its own changelog.

Not everything Ezomic publishes is in here. Surge, for example, is published on its own and is not part of the set. Mods are added to the pack once they have been played, not once they compile.

Version pinning

Every dependency is pinned at an exact version rather than a minimum, so two people on the same pack version have the same files.

That matters because of what Longhouse Core does on connect. It compares each Ezomic mod's version and build id between client and server, and the server rejects a client that does not match. Matching pins are what keep that check from firing on someone who did nothing wrong.

The pack's version is its own and does not track any member's. It moves when the set changes: a mod added, removed, or repinned. What changed inside a mod is in that mod's changelog; what changed in the set is in CHANGELOG.md.

If you update a single member mod inside a pack profile, you are no longer on the pinned set, and a server still running the pack version will refuse you.

Installation

Use a mod manager. Install Longhouse in the Thunderstore Mod Manager or r2modman, and it pulls in every member mod plus BepInEx at the pinned versions.

Installing by hand means installing each member yourself at the version named in manifest.json. The pack contains no files to copy.

Requirements:

• BepInEx 5.4.2350 (denikson's Valheim pack), resolved as a dependency. These mods use the BepInEx 5 API and do not work on BepInEx 6.
• Valheim 1.0 or later. Pack 2.x is built against 1.0.7. Pack 1.1.7 is the last version for pre-1.0 Valheim; the two lines are not interchangeable.

Nothing here needs a server. The whole set works in single player and on a world you host yourself.

Configuration

The pack has no settings of its own. Each mod writes its own file to BepInEx\config\ezomic.valheim.<mod>.cfg on first run, and its README covers what is in it. Note that BepInEx saves those files on first run, so editing a default in a later version of a mod does not change a config file you already have.

Two defaults worth knowing about before you play:

• Dyrr protects your character on the client, and that is on by default. It records which world each character belongs to and refuses to load that character into a different one, on local worlds (Protect / ProtectCharacter) and when joining a server (Protect / ProtectOnServers). Turn both off if you deliberately take one character between worlds.
• Dyrr's server-side door refuses nobody until an admin enables it. Door / Enforce defaults to false, which logs what would have been refused and lets everyone in.

Multiplayer

Install the same pack version on the server and on every client.

Longhouse Core sends each Ezomic mod's version and build id during the connection handshake. If the sets disagree, the server closes the connection: the client gets Valheim's "Incompatible version" screen, a dialog naming the mods that disagree, and the same list in BepInEx\LogOutput.log. Build ids are compared as well as version strings, so two DLLs both claiming 1.2.0 are refused if they were compiled separately. Installing the published packages on both ends rather than building them yourself is what keeps those ids identical.

Most members register prefabs or otherwise need to be on both sides, so a client carrying a mod the server lacks is a refused connection rather than a missing feature. Two exceptions: Skaft only has to be on the host, and clients without it are let in; Sinka only affects placement on the client and stays out of the check entirely.

On a server the host's config values are applied to connected clients in memory. Client config files are not modified and the client's own values come back on disconnect. Keybinds are held back from that: the host's keys are not applied to yours.

Core's checks live in BepInEx\config\ezomic.valheim.core.cfg, all three on by default:

Setting	Default	Effect
EnforceVersions	true	Refuse a connection when client and server disagree about which Ezomic mods are installed, or about their versions.
EnforceBuilds	true	Also refuse when both ends claim the same version but are different builds. Turn this off if you compile the mods yourself on more than one machine.
EnforceConfig	true	Apply the host's settings on connected clients.

Only Ezomic mods take part in this. Other mods you install are not checked, and not protected from mismatching either.

Compatibility

Built against Valheim 1.0.7, Unity 6000.0.75, BepInEx 5.4.23.5 and Harmony 2.9.

Several members add buildable pieces and items: Kynda's Tun and Woodrack, Vaettir's sapling, spirit and stowing post, Taum's halter, Lur's horn. Valheim discards objects whose prefab it cannot find, so removing one of those mods deletes everything already built or stored from it the next time the world loads, with no message and no way back. Back up the world before dropping a member.

No known conflicts with other mods, but the set is large and touches inventory, stacking, containers, building and spawning, so overlap with another mod that does the same is likely.

Troubleshooting

Refused with "Incompatible version". Client and server are not on the same set. Read the tail of BepInEx\LogOutput.log on the client: Core names which mods disagree and which side is ahead. Usually one end is a pack version behind.

A setting has no effect on a server. The host's value is applied while you are connected. Change it on the server, or in your own config for single player.

A mod looks like it is not running. Each mod logs its name and version at startup in BepInEx\LogOutput.log. If the line is missing, the mod did not load. If the line is there and the feature is not, the config is the next place to look.

Bug reports

Report in the Discord or on the issue tracker. The Discord is the better place when you cannot tell which mod is responsible, which is most of the time.

Include:

• BepInEx\LogOutput.log. It names every mod that loaded and its version.
• Whether you were on a server or in single player, and the pack version on both ends.
• AppData\LocalLow\IronGate\Valheim\Player.log if a vanilla mechanic broke. Exceptions thrown mid-frame land there and not in the BepInEx log.

Discord

discord.gg/hJzAVaZ5wb is where updates, support, bug reports and compatibility questions go.

Server

There is a small EU server on Amsterdam time running this pack, if you want somewhere to play. Hard combat difficulty, resources at 1x, everything else vanilla, no application and no activity requirements. It runs Dyrr with enforcement on, so bring a character that has never played in another world. Connection details are in the Discord.

Building the manifest

tools\build-manifest.ps1 rewrites the pins so they do not have to be typed by hand:

.\tools\build-manifest.ps1
.\tools\build-manifest.ps1 -PackVersion 2.1.0

It reads each member's own manifest.json, which is the file that mod's package is built from, and rewrites manifest.json here. A member that is missing or malformed fails the run instead of producing a shorter pack. With no -PackVersion it keeps the version the manifest already carries, so refreshing pins does not renumber the pack. The member list is explicit, inside the script.

Licence

MIT. Copyright (c) 2026 Robbin Thijssen (Thijssen Software). See LICENSE.