I followed the installation instructions in the plugin, which includes installing the updated plugin to C:\Program Files\Epic Games\5.0\Engine\UE4PlasticPlugin That caused the following issue when I try to build.
UnrealBuildTool : error : Found 'PlasticSourceControl' plugin in two locations (C:\Program Files\Epic Games\UE_5.0\Engine\Plugins\Developer\PlasticSourceControl\PlasticSourceControl.uplugin and C:\Program Files\Epic Games\UE_5.0\Engine\Plugins\UE4PlasticPlugin\PlasticSourceControl.uplugin). Plugin names must be unique.
So, I tried deleting the old plugin at C:\Program Files\Epic Games\UE_5.0\Engine\Plugins\Developer\PlasticSourceControl but then I get this error instead
UnrealBuildTool : error : Expecting to find a type to be declared in a module rules named 'XmlParser2' in UE5Rules, Version=0.0.0.0, Culture=neutral, PublicKeyToken=null. This type must derive from the 'ModuleRules' type defined by Unreal Build Tool.
So... it seems like I'm pretty stuck here? How do I get around this?