Question Asmdef Version Definitions not detecting when package missing/updated.

https://forum.unity.com/threads/asmdef-questions.651517/#post-4595680

I am working with version defines trying to make a soft-dependency on a package (UniRX) so that if a user has the latest version, then they can have additional functionality based on precompiles.

I installed the package via the package manager and the Asmdef worked, but when I removed it, the definition (UNIRX_PRESENT) still evaluates to true within Visual Studio, which stops compilation. Only when I edit the Asmdef does it update. Is there a way to have it auto-update the defines whenever I install or remove a package?

For Reference, here is my Asmdef with name replaced:

Code (CSharp):

1. {
2.     "name": "myAsmdefName, real one exists.",
3.     "rootNamespace": "",
4.     "references": [
5.         "GUID:560b04d1a97f54a4e82edc0cbbb69285"
6.     ],
7.     "includePlatforms": [],
8.     "excludePlatforms": [],
9.     "allowUnsafeCode": false,
10.     "overrideReferences": false,
11.     "precompiledReferences": [],
12.     "autoReferenced": true,
13.     "defineConstraints": [],
14.     "versionDefines": [
15.         {
16.             "name": "com.neuecc.unirx",
17.             "expression": "7.1.0",
18.             "define": "UNIRX_PRESENT"
19.         }
20.     ],
21.     "noEngineReferences": false
22. }