{
  lib,
  pkgs,
  pkgs-unstable,
  ...
}: let
  dotnetVersions = [8 9 10];

  dotnetCombined =
    pkgs.dotnetCorePackages.combinePackages
    (builtins.concatMap
      (v: let
        # dotnet = pkgs.dotnetCorePackages."dotnet_${builtins.toString x}";
      in [
        # dotnet.sdk

        # the runtime+aspnetcore packaged with the sdk
        pkgs.dotnetCorePackages."sdk_${builtins.toString v}_0"
      ])
      dotnetVersions);

  # Custom packaged tools
  dotnetTools = with lib; {
    uno-check = with pkgs.dotnetCorePackages;
      buildDotnetGlobalTool {
        pname = "Uno.Check";
        version = "1.32.17";

        nugetHash = "sha256-BfTVF5uHu9/nyLXqdDEOHCxq6BVQWhsnDBbARzdLDAE=";

        executables = "uno-check";

        dotnet-sdk = dotnet_9.sdk;
        dotnet-runtime = dotnet_9.runtime;

        meta = {
          homepage = "https://github.com/unoplatform/uno.check";
          license = licenses.mit;
          maintainers = [maintainers.emileclarkb];
        };
      };
  };
in {
  environment.systemPackages = with pkgs; [
    # .NET
    dotnetCombined

    # .NET Tools
    dotnetTools.uno-check

    # Mono
    mono
    # NOTE: nixpkgs-unstable uses .NET8 SDK
    # WARNING: nixpkgs-25.05 uses .NET6 SDK (now marked insecure)
    pkgs-unstable.msbuild

    # .NET Framework Tools/Services
    omnisharp-roslyn
    netcoredbg
  ];
}