NuGet Package Installer for Unity

A minimal script to install NuGet packages into a Unity project. It does not automatically download dependencies, allowing you to choose which packages and dependencies to install.

If you need a more feature-rich solution with a user interface, consider using NuGetForUnity, a full-fledged package manager for NuGet built into Unity.

Motivation

This script was created to provide a simple and lightweight solution for installing NuGet packages in Unity projects, without the overhead of a full-featured package manager. I wanted it to be no more than a single file, and that I could use it via C# rather than a user interface.

How to use

Here's an example of how to install the FFMpegCore package and its dependencies:

private static bool InstallFFMpegCore()
{
    var packages = new (string packageId, string version)[]
    {
        ("System.Runtime.CompilerServices.Unsafe", "6.0.0"),
        ("Microsoft.Bcl.AsyncInterfaces", "7.0.0"),
        ("System.Text.Encodings.Web", "7.0.0"),
        ("System.Text.Json", "7.0.2"),
        ("Instances", "3.0.0"),
        ("FFMpegCore", "5.1.0"),
    };
    
    try
    {
        foreach (var (packageId, version) in packages)
        {
            NuGetPackageInstaller.InstallNuGetEditorPackage(packageId, version, isEditorOnly: true, refreshAfterInstall: false);
        }
        AssetDatabase.Refresh();
        return true;
    }
    catch (Exception e)
    {
        Debug.LogError("Error while installing FFMpegCore: " + e);
        return false;
    }
}