Failing to build on CachyOS (Arch Linux)

[jmikeneedham]

I am trying to build the omnisharp-roslyn lsp on my CacnyOS system (which is an Arch Linux deritative). I am getting some kind of error stating that it is looking for dotnet-sdk-10.0.xx-preview but that is not available in the repositories. The latest version is 9. I have both the 8.0 and 9.0 versions installed, but the build still fails.

I plan to use the LSP with Zed Editor.

I am not sure what can be done, but I am stuck here. Thanks for any help.