Dotnet MAUI workload

devurandom · July 20, 2024, 1:41pm

The GitHub issue tracker has a report of this: .NET workloads fail to install · Issue #226107 · NixOS/nixpkgs · GitHub

anpin · October 15, 2024, 7:42pm

here is nix shell with workaround for workloads and all android dependencies to build a sample dontet-android apps on nixos

github.com

anpin/maui-on-nix/blob/cd1514c4be6aef7074485e2fe976e2dea6a19426/shell.nix

{ pkgs ? import <nixpkgs> { }, android-nixpkgs ? import <android-nixpkgs> { } }:
with pkgs;
let 
    android-sdk =  android-nixpkgs.sdk.${system} (sdkPkgs: with sdkPkgs; [
            
            build-tools-35-0-0
            build-tools-34-0-0
            cmdline-tools-latest
            emulator
            platform-tools
            platforms-android-35
            platforms-android-34
          ]);
    # This is needed to install workload in $HOME
    # https://discourse.nixos.org/t/dotnet-maui-workload/20370/2
    userlocal =  ''
         for i in $out/sdk/*; do
           i=$(basename $i)
           length=$(printf "%s" "$i" | wc -c)
           substring=$(printf "%s" "$i" | cut -c 1-$(expr $length - 2))

This file has been truncated. show original

vincenzopalazzo · October 21, 2024, 7:36pm

Krutonium:

    postBuild = (previousAttrs.postBuild or '''') + ''
         for i in $out/sdk/*
         do
           i=$(basename $i)
           length=$(printf "%s" "$i" | wc -c)
           substring=$(printf "%s" "$i" | cut -c 1-$(expr $length - 2))
           i="$substring""00"
           mkdir -p $out/metadata/workloads/''${i/-*}
           touch $out/metadata/workloads/''${i/-*}/userlocal
        done
      '';

It worked like a charm thanks

oatberry · April 12, 2025, 2:08pm

For folks finding this still, these overrides shouldn’t be necessary anymore. Using dotnetCorePackages.dotnet_X.sdk will have the userlocal file in the right place to allow workload installs, and dotnetCorePackages.combinePackages now links the userlocal files together as well:

{ pkgs }:

let
  dotnet = (with pkgs.dotnetCorePackages; combinePackages [ dotnet_9.sdk dotnet_8.sdk ]);
in

pkgs.mkShell {
  packages = [ dotnet ];

  DOTNET_PATH = "${dotnet}/bin/dotnet";
  DOTNET_ROOT = "${dotnet}/share/dotnet";
}

$ tree -l $DOTNET_ROOT/metadata
/nix/store/dcb537vbbfs8q3i1gfrc077wm910jkcf-dotnet-wrapped-combined/share/dotnet/metadata
└── workloads
    ├── 8.0.100 -> /nix/store/2zggnpahim3f5g0jl984vd3z8g4wsc73-dotnet-sdk-wrapped-8.0.114/share/dotnet/metadata/workloads/8.0.100
    │   └── userlocal
    └── 9.0.100 -> /nix/store/x8pdk25r5g5lv402s3ks03wq4lkjdj14-dotnet-sdk-wrapped-9.0.104/share/dotnet/metadata/workloads/9.0.100
        └── userlocal

danbiscotti · April 25, 2025, 10:58pm

Nixos noob here, so might be an easy solution, but is there any way to decoratively install workloads?

anpin · June 17, 2025, 10:59am

anyone able to build/publish for android? Seems like some wokloads are missing in the nixpkgs dotnet version.

 dotnet publish -f net9.0-android
  Determining projects to restore...
  All projects are up-to-date for restore.
/home/a/.dotnet/packs/Microsoft.Android.Sdk.Linux/35.0.61/targets/Microsoft.Android.Sdk.Aot.targets(25,5): error : Could not resolve SDK "Microsoft.NET.Runtime.MonoAOTCompiler.Task". Exactly one of the probing messages below indicates why we could not resolve the SDK. Investigate and resolve that message to correctly specify the SDK.
/home/a/.dotnet/packs/Microsoft.Android.Sdk.Linux/35.0.61/targets/Microsoft.Android.Sdk.Aot.targets(25,5): error :   SDK resolver "Microsoft.DotNet.MSBuildWorkloadSdkResolver" returned null.
/home/a/.dotnet/packs/Microsoft.Android.Sdk.Linux/35.0.61/targets/Microsoft.Android.Sdk.Aot.targets(25,5): error :   The NuGetSdkResolver did not resolve this SDK because there was no version specified in the project or global.json.
/home/a/.dotnet/packs/Microsoft.Android.Sdk.Linux/35.0.61/targets/Microsoft.Android.Sdk.Aot.targets(25,33): error MSB4236: The SDK 'Microsoft.NET.Runtime.MonoAOTCompiler.Task' specified could not be found. [/home/a/projects/ContextMenuContainer/sample/APES.MAUI.Sample.csproj]

I had do to an FHS shell and install official SDK in order to achieve this. dotnet workload restore from the fhs shell has a different set of workloads installed, including the missing one.