2020.3 LTS is not supported

[LeonYew-Ley]

Problems

This MCP works well in Unity6, but 2020.3 is not supported.
2020.3 LTS is not supported due to the URP Package Compatibility.
2020.3 LTS can only install URP Package 10.x Version, however, the MCP Package requires 12.1.7.

MyVersion: 2020.3.48f1

Error:

[Package Manager Window] Cannot perform upm operation: Unable to add package [https://github.com/justinpbarnett/unity-mcp.git]:
  Package com.justinpbarnett.unity-mcp@https://github.com/justinpbarnett/unity-mcp.git has invalid dependencies or related test packages:
    com.unity.render-pipelines.universal (dependency): Package [com.unity.render-pipelines.universal@12.1.7] cannot be found [NotFound].
UnityEditor.EditorApplication:Internal_CallUpdateFunctions () (at /Volumes/jenkins1/sharedspace/ra_2020.3/Editor/Mono/EditorApplication.cs:327)

Update：

Even though I changed the package.json in Unity MCP Package and the error is gone, the Unity Package was installed well, the Unity MCP didn't show in Unity Menu/Windows.

[Alex-Rachel]

It s a bug. You need add a assembly-define(Editor Only) in package of unity-mcp. like UnityMCP.Editor

[justinpbarnett]

Removed URP dependency in PR #68