The ants module is a key piece of software not just for running Met Office family models but also for working on analysis of their outputs. Having transitioned from hh5 to xp65, I’ve been struggling to find out where ants is available and where it is not. Some of my previously saved settings worked…

Thank you @rbeucher . It was actually coming up as not available in 25.09 earlier today- but perhaps that’s too fresh an unstable environment?

It is still not available but we are working on it. I got most of the UM packages to work (mule, etc) but ants conflicts with the version of iris required by other packages. See here: Adding ants by rbeucher · Pull Request #292 · ACCESS-NRI/ACCESS-Analysis-Conda · GitHub

Thanks @rbeucher , I appreciate your work on getting a tricky package working.

@atteggiani has some background information that would be useful I think.

Hi @bethanwhite , I understand ants is an important module to work with the ACCESS models which have the UM as their atmospheric component. Unfortunately, there are a few problems with the ants package that ACCESS-NRI can do very little to circumvent. Issues with the ants package The package does…

There’s an existing ants + ug-ants environment at /g/data/access/ngm/apps/ants/ug-2.1.0, created from Sign in · GitLab . Ants dependencies are provided as conda environment/lock files. There are conflicts in the versions required by ants and ug-ants - the ngm module uses the ug-ants versions where t…

Thanks @atteggiani . One immediate comment - if you are building a dedicated environment for ants, please also make sure it contains iris. (That may already be the case in the environment @Scott recommended?)

But as a general comment - if the solution is to build a specific ants-enabled analysis environment separate from conda/analysis3, I see no issue with that as a solution.

Yes Iris is a pre-requisite of ants so it’s included (basically all of ants works with iris cubes)

Ants module availability in xp65 analysis3 kernels

Technical Infrastructure

bethanwhite (Bethan White) 27 February 2026 03:14 20

@rbeucher @Scott @atteggiani I’m just catching up with the deprecation of older analysis3 environments.
How does the current and future status of ANTS sit within this work plan?

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Ants module availability in xp65 analysis3 kernels

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