Cannot install due to to invalid dependencies

[ppStarLightShadows]

[Package Manager Window] Cannot perform upm operation: Unable to add package [https://github.com/SolidAlloy/ClassTypeReference-for-Unity.git]: Package com.solidalloy.type-references@https://github.com/SolidAlloy/ClassTypeReference-for-Unity.git has invalid dependencies or related test packages: com.solidalloy.unity-dropdown (dependency): Package [com.solidalloy.unity-dropdown@1.1.1] cannot be found [NotFound]. UnityEditor.EditorApplication:Internal_CallUpdateFunctions ()

[Package Manager Window] Error adding package: https://github.com/SolidAlloy/ClassTypeReference-for-Unity.git. UnityEditor.EditorApplication:Internal_CallUpdateFunctions ()

Note: Yes, I did install SolidUtilities first. Currently, SolidUtilities has its own error preventing it from compiling correctly, which I have submitted an issue for on SolidUtilities's page. That may possibly be because of this error.

[SolidAlloy]

Thanks for reporting the issue. I updated the dependencies some time ago but didn't change the installation instructions. I updated them now, so please try installing the package once again.

The new installation section from README:

To install the project as a Git package do the following:

1. In Unity, open Project Settings -> Package Manager.
2. Add a new scoped registry with the following details:
   • Name: package.openupm.com
   • URL: https://package.openupm.com
   • Scope(s):
     • com.openupm
     • com.solidalloy
     • org.nuget
3. Hit Apply.
4. Go to Window -> Package Manager.
5. Press the + button, Add package from git URL.
6. Enter com.solidalloy.type-references, press Add.