UnityNuGet

This project provides a seamlessly integration of a curated list of NuGet packages within the Unity Package Manager.

DISCLAIMER: This is not an official service provided by Unity Technologies Inc.

Installation

Add scope registry (manifest.json):

In order to use this service you simply need to edit the Packages/manifest.json in your project and add the following scoped registry:

{
  "scopedRegistries": [
    {
      "name": "Unity NuGet",
      "url": "https://unitynuget-registry.azurewebsites.net",
      "scopes": [
        "org.nuget"
      ]
    }
  ],
  "dependencies": {
     "org.nuget.scriban":  "2.1.0"
  }
}

Add scope registry (Package Manager UI):

Instructions: https://docs.unity3d.com/Manual/class-PackageManager.html

Name: Unity NuGet

Url: https://unitynuget-registry.azurewebsites.net

Scope(s): org.nuget

Disable Assembly Version Validation

This step is necessary to ensure that binding redirects for strongly named assemblies in NuGet packages resolve correctly to paths within the Unity project.

• In Unity 2022.2+, this is the default behavior, so no action is required.
• For earlier Unity versions, uncheck "Project Settings > Player > Other Settings > Configuration > Assembly Version Validation"

Verify installation

WARNING: If you are encountering weird compilation errors with UnityNuGet and you have been using UnityNuGet already, it could be that we have updated packages on the server, and in that case, you need to clear the cache containing all Unity NPM packages downdloaded from the unitynuget-registry.azurewebsites.net registry. On Windows, this cache is located at: %localappdata%\Unity\cache\npm\unitynuget-registry.azurewebsites.net

Cache locations by OS: https://docs.unity3d.com/Manual/upm-cache.html

When opening the Package Manager Window, you should see a few packages coming from NuGet (with the postfix text (NuGet))

Adding a package to the registry

This service provides only a curated list of NuGet packages

Your NuGet package needs to respect a few constraints in order to be listed in the curated list:

• It must have non-preview versions (e.g 1.0.0 but not 1.0.0-preview.1)
• It must provide .NETStandard2.0 assemblies as part of its package

You can send a PR to this repository to modify the registry.json file (don't forget to maintain the alphabetical order)

You also need to specify the lowest version of your package that has support for .NETStandard2.0 upward so that other packages depending on your package have a chance to work with.

Beware that all transitive dependencies of the package must be explicitly listed in the registry as well.

NOTE:

• We reserve the right to decline a package to be available through this service
• The server will be updated only when a new version tag is pushed on the main branch.

Compatibility

Only compatible with Unity 2019.1 and potentially with newer version.

NOTE: This service is currently only tested with Unity 2019.x, 2020.x and 2021.x

It may not work with a more recent version of Unity

Docker

Example of a basic docker-compose.yml file:

services:
  unitynuget:
    build: .
    ports:
      - 5000:80
    volumes:
      - ./unity_packages:/app/unity_packages

There is a complete example in examples/docker.

Accessing a private NuGet feed from Azure DevOps

As documented in the example, it is possible to provide a custom NuGet.Config file.

To add a private feed, the following fields must be filled in.

<?xml version="1.0" encoding="utf-8"?>
<configuration>
  <packageSources>
    <clear />
    <add key="nuget.org" value="https://api.nuget.org/v3/index.json" protocolVersion="3" />
    <add key="MyCustomFeed" value="https://pkgs.dev.azure.com/<ORG_NAME>/<PROJECT_NAME>/_packaging/<FEED_NAME>/nuget/v3/index.json" />
  </packageSources>
  <packageSourceCredentials>
    <MyCustomFeed>
      <add key="Username" value="<Azure DevOps Email>" />
      <add key="ClearTextPassword" value="<Azure DevOps PAT>" />
    </MyCustomFeed>
  </packageSourceCredentials>
</configuration>

Note: The Azure DevOps PAT must have Packaging (Read) permissions.

FAQ

Where is hosted this service?

On Azure through my own Azure credits coming from my MVP subscription, enjoy!

Why can't you add all NuGet packages?

The reason is that many NuGet packages are not compatible with Unity, or do not provide .NETStandard2.0 assemblies or are not relevant for being used within Unity.

Also currently the Package Manager doesn't provide a way to filter easily packages, so the UI is currently not adequate to list lots of packages.

Why does it require .NETStandard2.0?

Since 2019.1, Unity is now compatible with .NETStandard2.0 and it is the .NET profile that is preferred to be used

Having a .NETStandard2.0 for NuGet packages for Unity can ensure that the experience to add a package to your project is consistent and well supported.

More information: https://docs.unity3d.com/Manual/dotnetProfileSupport.html

How this service is working?

This project implements a simplified compatible NPM server in C# using ASP.NET Core and converts NuGet packages to Unity packages before serving them.

Every 10min, packages are updated from NuGet so that if a new version is published, from the curated list of NuGet packages, it will be available through this service.

Once converted, these packages are cached on the disk on the server.

License

This software is released under the BSD-Clause 2 license.

Author

Alexandre Mutel aka xoofx