Resolution conflict error messages ignore --strict-channel-priority

[183amir]

I am trying to debug a conflict error, but mamba's error message is not useful because it ignores the strict channel priority:

$ mamba create -n temp --dry-run --strict-channel-priority --override-channels \
-c http://www.idiap.ch/software/bob/conda/label/beta \
-c http://www.idiap.ch/software/bob/conda \
-c conda-forge \
'bob.ap' \
'bob.extension' \
'docopt=0.6.2' \
'torchvision=0.10.1' \
'bob.io.base' \
'bob.io.image' \
'pip=21.3.*' \
'numpy=1.20.3' \
'h5py=2.10.0' \
'pytorch=1.8.0' \
'matplotlib=3.4.3' \
'setuptools=58.2.0' \
'bob.core' \
'tensorflow=2.4.1' \
'python=3.8.*' \
'bob.pad.base'

Looking for: ['bob.ap', 'bob.extension', 'docopt=0.6.2', 'torchvision=0.10.1', 'bob.io.base', 'bob.io.image', 'pip=21.3', 'numpy=1.20.3', 'h5py=2.10.0', 'pytorch=1.8.0', 'matplotlib=3.4.3', 'setuptools=58.2.0', 'bob.core', 'tensorflow=2.4.1', 'python=3.8', 'bob.pad.base']

Encountered problems while solving:
  - nothing provides jpeg 9b needed by bob.io.image-2.2.0-py27_2

But this error message is not useful, because bob.io.image-2.2.0-py27_2 comes from http://www.idiap.ch/software/bob/conda while there are bob.io.image packages in the beta channel already:

$ mamba search bob.io.image
Loading channels: ...working... done
# Name                       Version           Build  Channel             
bob.io.image                   2.2.0          py27_0  software/bob/conda  
bob.io.image                   2.2.0          py27_1  software/bob/conda  
bob.io.image                   2.2.0          py27_2  software/bob/conda  
bob.io.image                   2.2.0          py34_0  software/bob/conda  
bob.io.image                   2.2.0          py34_1  software/bob/conda  
bob.io.image                   2.2.0          py34_2  software/bob/conda  
bob.io.image                   2.2.0          py35_0  software/bob/conda  
bob.io.image                   2.2.0          py35_1  software/bob/conda  
bob.io.image                   2.2.0          py35_2  software/bob/conda  
bob.io.image                   2.2.1          py27_0  software/bob/conda  
bob.io.image                   2.2.1          py34_0  software/bob/conda  
bob.io.image                   2.2.1          py35_0  software/bob/conda  
bob.io.image                   2.2.1          py36_0  software/bob/conda  
bob.io.image                   2.2.2     np112py27_0  software/bob/conda  
bob.io.image                   2.2.2     np112py35_0  software/bob/conda  
bob.io.image                   2.2.2     np112py36_0  software/bob/conda  
bob.io.image                   2.2.2     np113py27_0  software/bob/conda  
bob.io.image                   2.2.2     np113py35_0  software/bob/conda  
bob.io.image                   2.2.2     np113py36_0  software/bob/conda  
bob.io.image                   2.2.2          py27_0  software/bob/conda  
bob.io.image                   2.2.2          py35_0  software/bob/conda  
bob.io.image                   2.2.2          py36_0  software/bob/conda  
bob.io.image                   2.3.0     np112py27_0  software/bob/conda  
bob.io.image                   2.3.0     np112py35_0  software/bob/conda  
bob.io.image                   2.3.0     np112py36_0  software/bob/conda  
bob.io.image                   2.3.0     np113py27_0  software/bob/conda  
bob.io.image                   2.3.0     np113py35_0  software/bob/conda  
bob.io.image                   2.3.0     np113py36_0  software/bob/conda  
bob.io.image                   2.4.0  py27h9deff11_0  software/bob/conda  
bob.io.image                   2.4.0  py36h9deff11_0  software/bob/conda  
bob.io.image                   2.4.1  py27h9deff11_0  software/bob/conda  
bob.io.image                   2.4.1  py36h9deff11_0  software/bob/conda  
bob.io.image                   2.4.2  py27hd33571a_0  software/bob/conda  
bob.io.image                   2.4.2  py36hd33571a_0  software/bob/conda  
bob.io.image                   2.4.3  py36hd7199c5_0  software/bob/conda  
bob.io.image                   2.4.4  py36h013ee83_1  software/bob/conda  
bob.io.image                   2.4.4  py36h1c34f4f_0  software/bob/conda  
bob.io.image                   2.4.4  py37h013ee83_1  software/bob/conda  
bob.io.image                   2.4.4  py37h1c34f4f_0  software/bob/conda  
bob.io.image                   2.4.5  py36h500d9c4_0  software/bob/conda  
bob.io.image                   2.4.5  py37h500d9c4_0  software/bob/conda  
bob.io.image                   2.4.6  py36h44c2a04_0  software/bob/conda  
bob.io.image                   2.4.6  py37h44c2a04_0  software/bob/conda  
bob.io.image                   2.5.0  py37h779996b_0  software/bob/conda  
bob.io.image                   2.5.0  py38h779996b_0  software/bob/conda  
bob.io.image                 2.5.1b0  py38h375c2ee_0  software/bob/conda/label/beta
bob.io.image                 2.5.1b0  py38h375c2ee_1  software/bob/conda/label/beta
bob.io.image                 2.5.1b0  py38h375c2ee_2  software/bob/conda/label/beta
bob.io.image                 2.5.1b0  py38h375c2ee_3  software/bob/conda/label/beta
bob.io.image                 2.5.1b0  py38h375c2ee_4  software/bob/conda/label/beta
bob.io.image                 2.5.1b0  py38h375c2ee_5  software/bob/conda/label/beta
bob.io.image                 2.5.1b0  py38h375c2ee_6  software/bob/conda/label/beta
bob.io.image                 2.5.1b0  py38hd166c48_7  software/bob/conda/label/beta

So bob.io.image-2.2.0-py27_2 should not be considered is resolving the environment at all.

I don't know if it's just the error message that is misleading or the strict channel priority is not fully functional. ref: #65

[183amir]

More info:

$ conda list | grep -E "(mamba|solv)"

libsolv                   0.7.19               h780b84a_5    conda-forge
mamba                     0.17.0           py39h951de11_0    conda-forge

$ mamba info

     active environment : base
    active env location : /home/amir/miniconda
            shell level : 2
       user config file : /home/amir/.condarc
 populated config files : /home/amir/miniconda/.condarc
                          /home/amir/.condarc
          conda version : 4.10.3
    conda-build version : 3.21.4
         python version : 3.9.7.final.0
       virtual packages : __linux=5.14.10=0
                          __glibc=2.33=0
                          __unix=0=0
                          __archspec=1=x86_64
       base environment : /home/amir/miniconda  (writable)
      conda av data dir : /home/amir/miniconda/etc/conda
  conda av metadata url : None
           channel URLs : https://conda.anaconda.org/conda-forge/linux-64
                          https://conda.anaconda.org/conda-forge/noarch
          package cache : /home/amir/miniconda/pkgs
                          /home/amir/.conda/pkgs
       envs directories : /home/amir/miniconda/envs
                          /home/amir/.conda/envs
               platform : linux-64
             user-agent : conda/4.10.3 requests/2.26.0 CPython/3.9.7 Linux/5.14.10-200.fc34.x86_64 fedora/34 glibc/2.33
                UID:GID : 1000:1000
             netrc file : None
           offline mode : False