ASV Does not work with latest versions of conda

[adam2392]

I am running the following ASV command and get the following error:

(sklearn) (base) adam2392@arm64-apple-darwin20 asv_benchmarks % asv setup --verbose 
Couldn't load asv.plugins._mamba_helpers because
No module named 'libmambapy'
· Creating environments
·· Creating conda environment for conda-py3.12-cython3.0.10-joblib1.3.2-numpy1.25.2-pandas2.1.0-scipy1.11.2-threadpoolctl3.2.0
·· Running '/Users/adam2392/miniforge3/bin/conda env create -f /var/folders/6_/sl83qtkd68x3_mvfys07_6qm0000gn/T/tmpcrx8xnai.yml -p /Users/adam2392/Documents/scikit-learn/asv_benchmarks/env/c6989ba2defdc48744a49c5e50663801 --force'
   OUTPUT -------->
   usage: conda [-h] [-v] [--no-plugins] [-V] COMMAND ...
   conda: error: unrecognized arguments: --force

(sklearn) (base) adam2392@arm64-apple-darwin20 asv_benchmarks % conda --version
conda 24.5.0

(sklearn) (base) adam2392@arm64-apple-darwin20 asv_benchmarks % asv --version
Couldn't load asv.plugins._mamba_helpers because
No module named 'libmambapy'
asv 0.6.3

An unrelated point, but I seem to be getting that the libmambapy is not found even though I have mamba installed.

[HaoZeke]

Closing as fixed in #1403

(not released yet though)

Also for libmambapy see #1390 (comment)

[flying-sheep]

when will this be released?

[nawtrey]

I came here to report the same thing. I spent a while chasing issues, and eventually came across conda/conda#13704. After downgrading my conda version to the last version that supports --force (i.e. using conda install conda=24.1.2) I was able to run asv check successfully.