Ah finally got it figured out, changing the packages to the following fixed it

systemPackages = with pkgs; [
  (with dotnetCorePackages; combinePackages [dotnet_9.sdk dotnet_8.sdk])
];

corruptcomputer: ```
environment = let
dotnet-sdk = with dotnetCorePackages; combinePackages [ sdk_9_0 sdk_8_0 ];
dotnetRoot = "${dotnet-sdk}/share/dotnet";
in {
etc = {
"dotnet/install_location".text = dotnetRoot;
};

systemPackages = with pkgs; [
dotnet-sdk
];
};

corruptcomputer:

environment = let
dotnet-sdk = with dotnetCorePackages; combinePackages \[ sdk\_9\_0 sdk\_8\_0 \];
dotnetRoot = "${dotnet-sdk}/share/dotnet";
in {
etc = {
"dotnet/install\_location".text = dotnetRoot;
};

systemPackages = with pkgs; \[
dotnet-sdk
\];
};