Installing ProGrids v3 in Unity 2018.3

progrids-install.md

The problem

ProGrids seems to have disappeared from the Unity Package Manager as of Unity 2018.3.

It is possible to install ProGrids v2 via the Asset Store, but it's an old and incompatible version.

The solution

To install, you need to import the package manually:

1. Navigate to your project directory on disk.
2. Open the manifest.json file in the Packages directory for editing.
3. Edit your file to include the new dependency and registry, as below.

The finished json file should look like this, with your own existing dependencies also listed under dependencies:

{
  "dependencies": {
    "com.unity.progrids": "3.0.0"
  },
  "registry":"http://staging-packages.unity.com"
}