icclim is not compatible with xclim recent releases

[thebaptiste]

I tried to install both icclim 7.0.0 and a recent release of xclim (>= 0.48.2) on Python 3.12

It doesn't work :

ERROR: Cannot install icclim==7.0.0 and xclim>=0.48.2 because these package versions have conflicting dependencies.

The conflict is caused by:
    The user requested xclim>=0.48.2
    icclim 7.0.0 depends on xclim<=0.48 and >=0.45

Do you intend to soon provide a new release compatible with xclim>0.48 ?

Other questions :

• is icclim compatible with numpy 2 ?
• is icclim compatible with Python 3.13 ?

By the way, it seems there is not much activity on the repository since 7 months and release 7.0.0...

Regards

[bzah]

Unfortunately the development of icclim is somewhat stopped at the moment, due to a lack of resources. We hope to be able to get back on it as soon as possible, but it might take a few more months.

Regarding the issue with xclim version, the problem is that icclim relies on xclim core components and, as xclim updates may introduce breaking changes between minor versions, it is difficult to provide a widely compatible pin of its version in icclim.
As for the compatibility with numpy 2 and python 3.13, it has not been tested yet.

[thebaptiste]

Maybe you could temporarly unpin the max xclim version in a new minor release 7.0.1 ? This would allow icclim users to test with newer xclim releases, numpy 2, Python 3.13... to bring up issues (and may be - let's dream a little - to propose PR to fix them, or at least facilitate the future restart of developments...).

[bzah]

I ran some tests and the current version of icclim is not fully compatible with xclim >= 0.49 due to breaking changes on SPI (Standard Precipitation Index) indices.
As for python 3.13, many of our dependencies are not yet ready so icclim can't be ready either.
Same goes for numpy, some of our dependencies are not yet ready for numpy 2 so we cannot yet upgrade.

[thebaptiste]

If you think it could be useful, I can open 2 compatibility issues, one for Python 3.13, another for numpy 2 (it's two different subjects, even if both are requiring to use a newer xclim release).
In each of them, you could list things to do from your side, and also dependencies not ready that you have to wait for...

[thebaptiste]

So I'm sorry to remove icclim from the packages list provided for Meteo-France developers by our framework Metwork (master branch and next 2.3 release). Users of icclim will have to stay on Metwork 2.2.