Nuget packages built by the Go CLI are not valid for GitLab

[bec-callow-oct]

Severity

No response

Version

Earliest tried was 2026.3.5562

Latest Version

I could reproduce the problem in the latest build

What happened?

When using the Go CLI to create a NuGet package via octopus package nuget create, the package is created with bit 3 set which is not supported by GitLab.

Relates to this closed Go issue.

Steps to reproduce:

1. Create a source folder with at least one file (e.g. lib/sample.txt)
2. Run octopus package nuget create to build TestPackage.1.0.0.nupkg
3. Push it to a GitLab Package Registry: dotnet nuget push TestPackage.1.0.0.nupkg --source <gitlab-nuget-index-url> --api-key <token>
4. Push returns 500 Internal Server Error

Reproduction

500 internal server error returned. The GitLab UI shows that the package was not uploaded.

Error and Stacktrace

More Information

No response

Workaround

The only known workaround is currently to repackage the nuget file. PowerShell:

$nupkg = "MyPackage.1.0.0.nupkg"
$extractDir = "temp_extract"

Expand-Archive -Path $nupkg -DestinationPath $extractDir -Force
Remove-Item $nupkg
Compress-Archive -Path "$extractDir\*" -DestinationPath $nupkg