dotnet cli run referencing local libraries in addition to referencing…

[paul-hammant]

… nuget packages

I'm simulating google's in-house monorepo and have made a rudimentary build system that doesn't rely on .sln or .csproj files. I've Java, Rust, Go and Kotlin in the trunk, and in a branch that I'll merge in when I can C# components and applications. Here's that running a hacky test-runner - https://github.com/paul-hammant/google-monorepo-sim/blob/dot_net_app_and_components_wip/csharptests/components/greek/GreekTests.cs

From that source:

#:package Shouldly 4.3.0
#:library ../../../target/components/greek/bin/components_greek.dll

The Shouldly package from nuget as the preview-4 supports
And a library from a relative (prior) build step.

This works for me in that solution. At least, I've other problems from juggling multiple versions of dotnet, but both of those acquisitions load OK.

I think proper tests go into test/dotnet.Tests/CommandTests/Project/Convert/DotnetProjectConvertTests.cs or
test/dotnet.Tests/CommandTests/Run/RunFileTests.cs or both. I'll add those to the PR unless the team says "never happening"

[Copilot]

Pull Request Overview

This PR adds support for referencing local libraries in dotnet CLI commands through a new "library" directive when building virtual projects.

• Introduces filtering and handling for library directives in project file generation.
• Adds a new Library class with parsing logic for validating the library path.
• Updates the XML output to include library references.

Comments suppressed due to low confidence (1)

src/Cli/dotnet/Commands/Run/VirtualProjectBuildingCommand.cs:617

• [nitpick] Consider reviewing and standardizing the indentation in the multi-line string literals to ensure that the resulting XML is formatted as intended.

writer.WriteLine("""

                  <ItemGroup>
                """);

[paul-hammant]

@dotnet-policy-service agree [company="Currently unemployed"]

Yes, I'm happy to grant y'all copyright in respect of this PR

[paul-hammant]

@dotnet-policy-service agree

[paul-hammant]

OK, so test.sh seems to run and run - still gaining understanding of test-tech in repo.

[paul-hammant]

OK, copilot (via the web UI) offers advice if I paste in a dumped .csproj file. I've been round and round in circles and can't get past

/path/to/my/source.cs(13,18): error CS0012: The type 'Object' is defined in an assembly that is not referenced. You must add a reference to assembly 'System.Private.CoreLib, Version=10.0.0.0, Culture=neutral, PublicKeyToken=7cec85d7bea7798e'.

I've tried everything it suggested: https://pastebinrichtext.com/paste/f5afd97c-0a54-490e-9218-037a8a6220a1

Some things being reported as errors make no sense. No, I'm not including GreekTests twice.

I've added a temp dump of the in-memory .csproj file
, but interestingly for a dotnet run sourcefile.cs it is going through that twice. I could dump out stack traces I get. Apols for the old fashioned debugging.

And a recap on my proximate cause: If if only have #:package (per preview 4) it all works fine. If I ALSO add #:library all the core typedefs are gone, and my attempts to code around that are getting nowhere.

[jogibear9988]

I would love this to land....