Getting "Detached head" error in Azure Pipeline build

Hi,

I was trying to improve our Azure Pipeline yaml to handle the preparation to a new release right on the build. For that I added this on a PS step: nbgv prepare-release

Upon execution it fails with this: Detached head. Check out a branch first.

I’ve cloned the repo locally and tried that on a PowerShell console without any issues and getting the expected outcome: a new branch and the current version config bumped.

Any ideas on what am I missing here?

Thanks!

[AArnott]

I think your failure is because ps1 considers the entire env var to be a single argument instead a string of space delimited arguments. Powershell has a syntax or two to support what you’re trying to do but I can’t remember them off-hand.

[josesimoes]

@ap0llo you correct! I’ve tried to do that git checkout without success. For some reason, it doesn’t like to “checkout” on a detached head…

I ended up cloning the repo to the Pipeline temp folder and call nbgv on that one to do the prepare-release. All this is in PowerShell script.

Something curious that I couldn’t find a way through: I’m not able to pass parameters to the tool using an Azure Pipeline variable. My idea was to have a pipeline var, like NbgvParameters. With the default being an empty string. The call to the tool in the PS1 is (was): nbgv prepare-release $env:NbgvParameters

Couldn’t make is work because nbgv always complained about the parameters with: error: invalid option --versionIncrement build

I tried several variations: with double quotes on the full line, double quotes just on the variable, single quotes. Nothing seemed to work…

If this is of interest to anyone the Azure Pipeline is here. Look for the failed jobs from yesterday and specifically the “NBGV prepare release” step.

Thanks anyway! 😃