Device Generator: produces wrong branch reference in .gitmodules in EPICS-top

[zsoltkebel]

Issue

On newly created submodules we realised that the generator puts refs/head/main as branch reference instead of the correct main.

We saw this issue with the new IOCs of Meas 905 and Pace 5000.

You can see the correct format around here: https://github.com/ISISComputingGroup/EPICS/blob/a01672b08ce4f38809aa843476bf7209a3c6c5c7/.gitmodules#L746

Get started

Probably look around somewhere here to investigate: https://github.com/ISISComputingGroup/IBEX_device_generator/blob/22331cb0549a3e729179262a055472530a1ac3fe/utils/git_utils.py#L155C49-L155C49

Acceptance criteria

• The script generator adds the correct branch name when run to generate a new device submodule.

How to Test

Probably by creating a new dummy device and seeing the format of the .gitmodules in EPICS-top

[rerpha]

after extensive debugging, Evan and I found that this is the cause: https://github.com/ISISComputingGroup/IBEX_device_generator/blob/master/utils/git_utils.py#L157

the annoying thing about this is it's a call to gitpython itself, which doesn't allow for any sort of method to disable the remote prefix (ie the /refs/heads/ part) so we're having to call subprocess.run() instead. We have added a comment for this in the code as well.

[esmith1729]

Pull Request:

• Changed method to add new submodules, as gitpython did not allow local branch creation IBEX_device_generator_old#31

To test:

• create a dummy device, and check that the .gitmodules file has the correct "branch" (should be just "main) in Instrument/Apps/EPICS