Build is failing after an FSComp.txt change

[auduchinok]

There's a new error when changing the generated errors:

4>Microsoft.DotNet.XliffTasks.targets(84,5): Error  :
    'xlf/FSComp.txt.cs.xlf' is out-of-date with '/Users/eugene/Developer/fsharp/artifacts/obj/FSharp.Compiler.Service/Debug/netstandard2.0/FSComp.resx'.
    Run `msbuild /t:UpdateXlf` to update .xlf files or set UpdateXlfOnBuild=true to update them on every build,
    but note that it is strongly discouraged to set UpdateXlfOnBuild=true in official/CI build environments as they should not modify source code during the build.

It blocks the development flow and requires you to manually do something that usually is only needed just before opening a PR, or could be done completely automatic on non-CI builds.

[auduchinok]

I can figure out the needed command, but I feel that it's going to be an issue for some other contributors, especially newcomers.

This is what I get if I try to run the command suggested in the error message:

eugene@Eugenes-Air:fsharp$ msbuild /t:UpdateXlf
Microsoft (R) Build Engine version 16.10.1 for Mono
Copyright (C) Microsoft Corporation. All rights reserved.

MSBUILD : error MSB1011: Specify which project or solution file to use because this folder contains more than one project or solution file.

The suggestion to set <UpdateXlfOnBuild>true</UpdateXlfOnBuild> in the project file doesn't fix the error either.

[vzarytovskii]

Likely introduced by #16327, I don't care much personally whether this is enabled or not, so, you'll need to agree on solution with Martin

[Martin521]

At the time I had no means to run UpdateXlf at all (dotnet build src\Compiler /t:UpdateXlf didn't work) without that reference to the xlifftasks.targets package. That's why we added it.
I have no idea why it now seems to runs automatically rather than just with dotnet build src\Compiler /t:UpdateXlf.

[Martin521]

BTW I think I saw the above error message once when I tried to run dotnet test after a change in FSComp.txt. It went away after a dotnet build.

[auduchinok]

Undoing changes from #16327 fixes the build for me. dotnet build ./src/Compiler /t:UpdateXlf also works.

@Martin521 Could we maybe try to revert it and try to find another way to solve your issue? Is there a way to check whether the solution is being loaded in a dev container?

[Martin521]

Let me check.

[Martin521]

It seems the explicit reference is no longer needed. I will create a PR to remove it.