UnsatisfiableError: The following specifications were found to be incompatible with each other

[rcasero]

Trying to install bioconda-utils on a CentOs Stream 8 with

conda install -c bioconda bioconda-utils

gives the error

Collecting package metadata (current_repodata.json): done
Solving environment: failed with initial frozen solve. Retrying with flexible solve.
Collecting package metadata (repodata.json): done
Solving environment: failed with initial frozen solve. Retrying with flexible solve.
Solving environment: / 
Found conflicts! Looking for incompatible packages.
This can take several minutes.  Press CTRL-C to abort.
failed                                                                                                                                                                                                                                                                               

UnsatisfiableError: The following specifications were found to be incompatible with each other:

Output in format: Requested package -> Available versionsThe following specifications were found to be incompatible with your system:

  - feature:/linux-64::__glibc==2.28=0
  - python=3.10 -> libgcc-ng[version='>=7.5.0'] -> __glibc[version='>=2.17']

Your installed version is: 2.28

Conda 4.14.0 environment was created with

conda create -n test python=3.10
conda activate test

although same problem has been observed with python 3.6, 3.7, 3.8 and 3.9.

I have tried to install several versions of bioconda-utils (1.0.0-0, 1.0.1-0, 0.20.0-0), with the same result

conda install -c bioconda bioconda-utils=0.20.0-0

[dpryan79]

It won't work with python 3.10

[rcasero]

Hi @dpryan79 , thanks for your reply. As I mentioned above, it doesn't work with python 3.6, 3.7, 3.8 and 3.9 either. Is that expected too?

[dpryan79]

I'm guessing that initially you're getting python from the defaults channel rather than conda-forge and that that is the source of the unsatisfiable solution. Make sure you have conda-forge in your channel list as the highest-priority channel at all times. Then things like this will work:

mamba create -dn foo bioconda-utils=1.0.1

In my case it used python 3.7.

[rcasero]

Yes, I get python from the default channel. Following your comment, first I tried to create an environment with python 3.9 from conda-forge, and install bioconda-utils

conda create -n test -c conda-forge python=3.9
conda activate test
conda install -c bioconda bioconda-utils

and got the same error

Collecting package metadata (current_repodata.json): done
Solving environment: failed with initial frozen solve. Retrying with flexible solve.
Solving environment: failed with repodata from current_repodata.json, will retry with next repodata source.
Collecting package metadata (repodata.json): done
Solving environment: failed with initial frozen solve. Retrying with flexible solve.
Solving environment: / 
Found conflicts! Looking for incompatible packages.
This can take several minutes.  Press CTRL-C to abort.
failed                                                                                                                                                                                                                                                                                 

UnsatisfiableError: The following specifications were found to be incompatible with each other:

Output in format: Requested package -> Available versionsThe following specifications were found to be incompatible with your system:

  - feature:/linux-64::__glibc==2.28=0
  - feature:|@/linux-64::__glibc==2.28=0

Your installed version is: 2.28

I then downgraded python to the version you used, 3.7, and then tried to install bioconda-utils again, to see whether the problem is with the python version

conda install -c conda-forge python=3.7
conda install -c bioconda bioconda-utils

and that worked. It downloaded 188.4 MB of packages. Thanks, @dpryan79 !