"error NETSDK1007: Cannot find project info" when a csproj with a certain name depends on another in the same directory.

[livarcocc]

From @davedissian on December 29, 2018 14:42

If I have two csproj's within the same directory, where csproj (1) depends on csproj (2), I get a NETSDK1007 error if the dependency (2) has a name which is lexicographically greater than the root project (1). For example, if I have Worker.csproj which depends on Library.csproj, it compiles fine. However, If I have AWorker.csproj which depends on Library.csproj, I get an NETSDK1007 error.

I guess the cause might have something to do with dependency resolution only being a single pass process (rather than being a two pass process that stores projects in a lookup table before resolving them).

Steps to reproduce

I have attached a zip file with 3 solutions: NETSDK1007-issue.zip

• Broken - A solution containing projects AWorker.csproj and Library.csproj
• Working - A solution containing projects Worker.csproj and Library.csproj
• WorkingSeparateDir - A solution containing projects AWorker.csproj and Library\Library.csproj

If I try and run dotnet build Worker.sln inside Broken, I get the following output:

Microsoft (R) Build Engine version 15.9.20+g88f5fadfbe for .NET Core
Copyright (C) Microsoft Corporation. All rights reserved.

  Restoring packages for /Users/david/Projects/DotnetCsharpBug/Broken/AWorker.csproj...
  Generating MSBuild file /Users/david/Projects/DotnetCsharpBug/Broken/obj/AWorker.csproj.nuget.g.props.
  Generating MSBuild file /Users/david/Projects/DotnetCsharpBug/Broken/obj/AWorker.csproj.nuget.g.targets.
  Restore completed in 244.37 ms for /Users/david/Projects/DotnetCsharpBug/Broken/AWorker.csproj.
/usr/local/share/dotnet/sdk/2.2.100/Sdks/Microsoft.NET.Sdk/targets/Microsoft.NET.Sdk.targets(129,5): error NETSDK1007: Cannot find project info for '/Users/david/Projects/DotnetCsharpBug/Broken/Library.csproj'. This can indicate a missing project reference. [/Users/david/Projects/DotnetCsharpBug/Broken/Library.csproj]

Build FAILED.

/usr/local/share/dotnet/sdk/2.2.100/Sdks/Microsoft.NET.Sdk/targets/Microsoft.NET.Sdk.targets(129,5): error NETSDK1007: Cannot find project info for '/Users/david/Projects/DotnetCsharpBug/Broken/Library.csproj'. This can indicate a missing project reference. [/Users/david/Projects/DotnetCsharpBug/Broken/Library.csproj]
    0 Warning(s)
    1 Error(s)

Time Elapsed 00:00:01.23

The project files look like this:

AWorker.csproj:

<Project Sdk="Microsoft.NET.Sdk">

  <PropertyGroup>
    <TargetFramework>netcoreapp2.1</TargetFramework>
    <EnableDefaultCompileItems>false</EnableDefaultCompileItems>
  </PropertyGroup>

  <ItemGroup>
    <ProjectReference Include="Library.csproj" />
    <Compile Include="Class1.cs" />
  </ItemGroup>

</Project>

Library.csproj:

<Project Sdk="Microsoft.NET.Sdk">

  <PropertyGroup>
    <TargetFramework>netcoreapp2.1</TargetFramework>
    <EnableDefaultCompileItems>false</EnableDefaultCompileItems>
  </PropertyGroup>

  <ItemGroup>
    <Compile Include="Library\Class1.cs" />
  </ItemGroup>

</Project>

Expected behavior

It compiles successfully.

Environment data

$ dotnet msbuild -version
Microsoft (R) Build Engine version 15.9.20+g88f5fadfbe for .NET Core
Copyright (C) Microsoft Corporation. All rights reserved.

15.9.20.62856

OS info:
macOS Mojave 10.14.2

If applicable, version of the tool that invokes MSBuild (Visual Studio, dotnet CLI, etc):

$ dotnet --version
2.2.100

Copied from original issue: dotnet/msbuild#4035

[tritao]

Reproduced this same issue while trying to generate csprojs all in the same directory.

[Alex2357]

Everything was working fine in the same situation with 2 F# projects in the same directory, but after I added nuget package today I have received the same error.

dotnet --version
2.2.104

/usr/share/dotnet/sdk/2.2.104/Sdks/Microsoft.NET.Sdk/targets/Microsoft.NET.Sdk.targets(129,5): error NETSDK1007: Cannot find project info for '/home/.../aproject.fsproj'. This can indicate a missing project reference. [/home/.../aproject.fsproj]

If I do stat /home/.../aproject.fsproj I get the file info

Reverted changes, deleted bin and obj folders and it works fine with 2 F# projects in the same directory.

The started dotnet add aproject.fsproj package FsUnit --version 3.4.0 and after that started dotnet build aproject.fsproj and I get the error again.

Eventually moved one of the projects into a separate folder

[github-actions]

Due to lack of recent activity, this issue has been labeled as 'stale'. It will be closed if no further activity occurs within 30 more days. Any new comment will remove the label.

[tritao]

Bump, this should not be closed, it's still an issue.