Installation failed for qiime2-2025.4 and 2024.10

Technical Support
1

Dear QIIME 2 developers and community,

I have been using QIIME 2 version 2024.5 without issues. However, I encountered errors when trying to install the recent versions 2024.10 and 2025.4.

I ran the following commands to ensure a clean environment:

conda clean --all
conda update conda

Then I tried to install QIIME 2 using the provided YAML file:

conda env create -n qiime2-2025.4 -f qiime2-amplicon-ubuntu-latest-conda.yml

The environment creation fails with the following error:

(base) fjh@MSI:/mnt/d/qiime2$ conda env create -n qiime2-2025.4 -f qiime2-amplicon-ubuntu-latest-conda.yml
Channels:
 - https://packages.qiime2.org/qiime2/2025.4/amplicon/released
 - conda-forge
 - bioconda
 - defaults
Platform: linux-64
Collecting package metadata (repodata.json): done
Solving environment: - warning  libmamba Problem type not implemented SOLVER_RULE_STRICT_REPO_PRIORITY
warning  libmamba Problem type not implemented SOLVER_RULE_STRICT_REPO_PRIORITY
warning  libmamba Problem type not implemented SOLVER_RULE_STRICT_REPO_PRIORITY
warning  libmamba Problem type not implemented SOLVER_RULE_STRICT_REPO_PRIORITY
warning  libmamba Problem type not implemented SOLVER_RULE_STRICT_REPO_PRIORITY
\ warning  libmamba Problem type not implemented SOLVER_RULE_STRICT_REPO_PRIORITY
warning  libmamba Problem type not implemented SOLVER_RULE_STRICT_REPO_PRIORITY
warning  libmamba Problem type not implemented SOLVER_RULE_STRICT_REPO_PRIORITY
warning  libmamba Problem type not implemented SOLVER_RULE_STRICT_REPO_PRIORITY
warning  libmamba Problem type not implemented SOLVER_RULE_STRICT_REPO_PRIORITY
warning  libmamba Problem type not implemented SOLVER_RULE_STRICT_REPO_PRIORITY
warning  libmamba Problem type not implemented SOLVER_RULE_STRICT_REPO_PRIORITY
warning  libmamba Problem type not implemented SOLVER_RULE_STRICT_REPO_PRIORITY
warning  libmamba Problem type not implemented SOLVER_RULE_STRICT_REPO_PRIORITY
warning  libmamba Problem type not implemented SOLVER_RULE_STRICT_REPO_PRIORITY
failed

LibMambaUnsatisfiableError: Encountered problems while solving:
  - package deblur-1.1.1-pyhdfd78af_0 requires sortmerna 2.0, but none of the providers can be installed

Could not solve for environment specs
The following package could not be installed
└─ deblur 1.1.1**  is not installable because it requires
   └─ sortmerna 2.0 , which conflicts with any installable versions previously reported.

I would like to ask:
Is this an issue with sortmerna 2.0 being unavailable or incompatible?
Or is there something else I should configure differently to install these versions?

Thank you in advance!

2

Hi @fjh035

It appears you are running into the same issue as outlined here:

As described in that post, try setting the following before installing QIIME 2:

conda config --set channel_priority flexible
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3

Thank you very much for your help!
The issue has been resolved successfully.

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