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
  }
}

Sorry, those are basically two different errors.

The original error was NU1101 ("error NU1101: Unable to find package NAME. No packages exist with this id in source(s): nuget, _nix") for Kaligraphy, Kanvas, Kompression, and Komponent.

CS0246 is from me trying to self-package Komponent, Kaligraphy, and Kanvas to provide the derivation.
(k2Repo in the following is just me trying to set the used src once in flake.nix and passing it to the derivations that way so I don't have to update the used commit info more than once)

{
  packages.x86_64-linux = {
    default = pkgs.callPackage ./package.nix { inherit k2Repo; komponent = self.packages.${system}.komponent; kaligraphy = self.packages.${system}.kaligraphy; kanvas = self.packages.${system}.kanvas; };
    komponent = pkgs.callPackage ./komponent.nix { inherit k2Repo; };
    kaligraphy = pkgs.callPackage ./kaligraphy.nix { inherit k2Repo; komponent = self.packages.${system}.komponent; };
    kanvas = pkgs.callPackage ./kanvas.nix { inherit k2Repo; komponent = self.packages.${system}.komponent; };
  };
};

Oh I forgot to respond to the rest of the post, sorry.

If so, you need to make sure the dependent projects reference the dependencies with PackageReference, and you'll need to make sure the dependencies are built with packNupkg = true, and included in `buildInputs of the dependent derivation.

The derivations for kaligraphy and kanvas both have buildInputs = [ komponent ];, and all three have packNupkg = true;, though I'm not 100% sure if they all have PackageReference in the original project, I'll have to look back at that in a bit. I'm assuming that they are correctly doing that, though.

  <ItemGroup>
    <PackageReference Include="Imgui.Forms" Version="1.5.11" />
    <PackageReference Include="Serilog.Sinks.File" Version="6.0.0" />
    <PackageReference Include="System.Drawing.Common" Version="5.0.3" />
  </ItemGroup>

  <ItemGroup>
    <ProjectReference Include="..\..\lib\Konnect.Contract\Konnect.Contract.csproj" />
    <ProjectReference Include="..\..\lib\Konnect\Konnect.csproj" />
    <ProjectReference Include="..\..\lib\Kryptography.Contract\Kryptography.Contract.csproj" />
    <ProjectReference Include="..\..\lib\Kryptography\Kryptography.csproj" />
  </ItemGroup>

This project doesn't seem to use PackageReference for internal stuff, which isn't really surprising. I think you should just make it a single derivation and build the one project you actually want. Kuriimu2.ImGui.csproj?

I've got a couple of .NET 6 EOL PRs if anyone has time to review

• https://github.com/NixOS/nixpkgs/pull/436377
• https://github.com/NixOS/nixpkgs/pull/436407