Creating an environment with mamba raises AttributeError

[martinfleis]

Details

• Read the Docs project URL: https://readthedocs.org/projects/geopandas/
• Build URL (if applicable): https://readthedocs.org/projects/geopandas/builds/17118809/
• Read the Docs username (if applicable): https://readthedocs.org/profiles/martinfleis/

Expected Result

Creating and env using mamba as a solver should properly create an environment.

mamba env create --quiet --name latest --file doc/environment.yml

Actual Result

This step currently fails.

Traceback (most recent call last):
  File "/home/docs/.asdf/installs/python/mambaforge-4.10.3-10/bin/mamba", line 7, in <module>
    from mamba.mamba import main
  File "/home/docs/.asdf/installs/python/mambaforge-4.10.3-10/lib/python3.9/site-packages/mamba/mamba.py", line 49, in <module>
    from mamba import repoquery as repoquery_api
  File "/home/docs/.asdf/installs/python/mambaforge-4.10.3-10/lib/python3.9/site-packages/mamba/repoquery.py", line 12, in <module>
    def _repoquery(query_type, q, pool, fmt=api.QueryFormat.JSON):
AttributeError: module 'libmambapy' has no attribute 'QueryFormat'

Note that a couple days ago, the same step also failed but on a different error.

Traceback (most recent call last):
  File "/home/docs/.asdf/installs/python/mambaforge-4.10.3-10/bin/mamba", line 11, in <module>
    sys.exit(main())
  File "/home/docs/.asdf/installs/python/mambaforge-4.10.3-10/lib/python3.9/site-packages/mamba/mamba.py", line 882, in main
    from conda.common.compat import ensure_text_type, init_std_stream_encoding
ImportError: cannot import name 'init_std_stream_encoding' from 'conda.common.compat' (/home/docs/.asdf/installs/python/mambaforge-4.10.3-10/lib/python3.9/site-packages/conda/common/compat.py)

xref geopandas/geopandas#2455

[stsewd]

Hi, from mamba-org/mamba#1370 (comment) looks like this is because we are executing conda update --yes --quiet --name=base --channel=defaults conda. Since you are using a specific version of conda at https://github.com/geopandas/geopandas/blob/4d1049b374263a2e69eabf9590d681ff316a2040/readthedocs.yml#L4-L5 I have disabled that feature for your project, and the build is passing now https://readthedocs.org/projects/geopandas/builds/17119525/.

[martinfleis]

Thanks!

[Zeitsperre]

@stsewd

Hi, sorry to chime in on a closed issue, but I've run into the exact same issue as mentioned/resolved here:

Build failure: https://readthedocs.org/projects/pavics-raven/builds/18248967/
Relevant RTD configuration: https://github.com/Ouranosinc/raven/blob/3e00a43e328b5ffce7f202fde595dce40b7b4f0a/.readthedocs.yml

Would it be possible to change the relevant settings for this project as well?

Thank you!

[humitos]

Hi @Zeitsperre! I disabled the feature UPDATE_CONDA_STARTUP on your project and this particular error disappear. However, there is another one, but doesn't look related to Read the Docs. See https://readthedocs.org/projects/pavics-raven/builds/18253009/

Encountered problems while solving:
  - nothing provides requested ravenpy >=0.8.0

[Zeitsperre]

@humitos Thanks so much, and no worries, that error is expected. All good!

[stsewd]

We should probably disable this feature when users have an explicit version, or even remove it completely and ask users to migrate to the new option of the config file (build.tools)