Generated solutions are unstable with multiple project inputs

[jdrobison]

I'm finding that the solutions generated by slngen are not stable, at least when multiple projects are supplied on the command line. I discovered this while writing an MSBuild target to diff two solutions.

Here's the command line I'm using, by way of the SlnGen MSBuild target (as updated by #609) I've placed one parameter per line to make it more legible.:

slngen.exe 
--nologo 
--verbosity:Minimal 
--consolelogger:NoSummary;ForceNoAlign 
--folders:true 
--launch:false 
--solutionfile:Microsoft.VisualStudio.Shell.sln 
--configuration:"Debug;Release" 
--platform:AnyCPU 
--property:"NuGetInteractive=true;IsGraphBuild=true" 
Microsoft.VisualStudio.Shell.csproj 
..\..\..\UnitTests\FileChangeManager\FileChangeManagerTests.csproj 
..\..\..\UnitTests\FileColorServiceTests\FileColorServiceTests.csproj 
..\..\..\UnitTests\FileSystemTests\FileSystemTests.csproj 

My expectation is that the first project on the command line will be the first one in the solution, and therefore the default startup project. That's what I get most of the time, but that doesn't seem to be consistent.

I've attached two generated solutions (with a .txt extension added, since .sln files can't be attached):

• Microsoft.VisualStudio.Shell.sln.txt: the expected output, with Microsoft.VisualStudio.Shell.csproj as the first project
• Microsoft.VisualStudio.Shell.unexpected.sln.txt: this one has FileChangeManagerTests.csproj as the first project, and differing solution folders as a result

Microsoft.VisualStudio.Shell.sln.txt
Microsoft.VisualStudio.Shell.unexpected.sln.txt

[mruxmohan4]

Closing this issue as it has been resolved with #609, which was deployed in the 11.4.6 release.

[jdrobison]

@mruxmohan4, #609 doesn't resolve this issue, I just happened to discover it while working on #609. Did you mean to refer to another PR which resolved this issue?

[kasperk81]

switch to https://github.com/microsoft/vs-solutionpersistence from vs team, will fix a lot of issues and enable slnx support. msbuild is making a switch dotnet/msbuild#10794