csharp-build

name	csharp-build
description	Diagnose and explain C# and .NET build, restore, test, format, SDK, MSBuild, project-file, and CI build issues. Use for dotnet clean/build/test/restore/format, .csproj, .sln, global.json, SDK resolution, NuGet package restore, compiler and analyzer errors, warning-as-error failures, MSBuild targets, binary logs, and CI build failures.
metadata	{"short-description":"C# build, SDK, and CI help"}

C# Build

Use $csharp-tutor mode=build.

Treat all user text after $csharp-build as the build command, error output, project file, CI failure, SDK issue, restore problem, or tooling question. Use the main csharp-tutor skill as the source of truth.

Load these csharp-tutor references when useful:

• references/build-guidance.md
• references/migration-guidance.md
• references/containers-guidance.md
• references/nuget-guidance.md
• references/aot-guidance.md
• references/analyzers-guidance.md
• references/project-inspection.md
• references/tooling-and-analyzers.md
• references/analyzer-tooling-guidance.md
• references/compiler-error-library.md
• references/testing-guidance.md
• references/versioning-guidance.md
• references/official-sources.md

Start by classifying the failure: SDK resolution, restore, project configuration, compiler/analyzer, test runner, or CI environment. Ask for or inspect the exact command and error output before recommending broad cleanup.

Standalone Guidance

• Core rule: Keep the answer centered on the concrete build decision, failure mode, or contract.
• Avoid: Giving generic C# advice without tying it to the build concern.
• Minimal example: dotnet build --no-restore