╭─whovian@nixos-wsl /tmp/wat/nix
╰─$  nix log /nix/store/9xi552907cas1y8rfwyifai5c7h92sjd-dotnet-vmr-10.0.0-preview.6.drv | rg -i "Phase com"
unpackPhase completed in 2 minutes 56 seconds
configurePhase completed in 59 seconds
buildPhase completed in 1 hours 50 minutes 18 seconds
installPhase completed in 43 seconds
fixupPhase completed in 2 minutes 50 seconds

So it took 2 hours but dotnetCorePackages.dotnet_10.vmr built! \o/

Oh no, it's not.

$  PAGER= nix log /nix/store/hipsbwjbxwlw20sjpmsfgkz0s7ja90fn-Aaru-6.0.0.drv
Running phase: unpackPhase
@nix { "action": "setPhase", "phase": "unpackPhase" }
unpacking source archive /nix/store/1xzm3a5wx770b9wcn1ffl6hqy7v7la1i-source
source root is source
Running phase: patchPhase
@nix { "action": "setPhase", "phase": "patchPhase" }
Running phase: configureNuget
@nix { "action": "setPhase", "phase": "configureNuget" }
The command could not be loaded, possibly because:
  * You intended to execute a .NET application:
      The application 'new' does not exist or is not a managed .dll or .exe.
  * You intended to execute a .NET SDK command:
      A compatible .NET SDK was not found.

Requested SDK version: 10.0.100-preview.7
global.json file: /build/source/global.json

Installed SDKs:
10.0.100-preview.6.25358.103 [/nix/store/k0z0ayma9s53pmplr9770zid9z9c0x9y-dotnet-sdk-10.0.100-preview.6.25358.103/share/dotnet/sdk]

Install the [10.0.100-preview.7] .NET SDK or update [/build/source/global.json] to match an installed SDK.

Learn about SDK resolution:
https://aka.ms/dotnet/sdk-not-found

I can probably just remove the global.json and it'll likely work fine, but that still isn't fun.

In this case it would be a fall back, but thank ya. It's something that I'll check later.

$ cat global.json

{
  "sdk": {
    "version": "10.0.100-preview.7",
    "rollForward": "latestFeature",
    "allowPrerelease": true
  }
}