Checklist <input type

I ran into the same issue: <div class="snippet-clipboard-content notranslate posit

<a class="user-mention notranslate" data-hovercard-type="user" data-hovercard-url="/us

`conda update` behaves differently with `libmamba` solver about conda-libmamba-solver HOT 2 CLOSED

conda commented on May 30, 2024

`conda update` behaves differently with `libmamba` solver

from conda-libmamba-solver.

Comments (2)

beenje commented on May 30, 2024 1

I ran into the same issue:

$ conda create -y -n myapp python=3.10 flask
$ conda list -n myapp | grep flask
flask                     2.2.2              pyhd8ed1ab_0    conda-forge

$ conda update -n myapp --quiet  --solver classic flask
# All requested packages already installed.

$ conda update -n myapp --quiet  --solver libmamba flask
The following packages will be DOWNGRADED:

  flask                                  2.2.2-pyhd8ed1ab_0 --> 2.2.1-pyhd8ed1ab_0

This is with conda 22.11.1 and conda-libmamba-solver 22.12.0

from conda-libmamba-solver.

costrouc commented on May 30, 2024

@beenje that is a really helpful example. I was able to reproduce. To help here are the libsolve instructions which might help to resolve. I've been spending some time trying to better understand the logic that https://github.com/conda/conda-libmamba-solver/blob/main/conda_libmamba_solver/solver.py#L332 does which is the state presented to libsolve.

conda create -y -n myapp python=3.10 flask

task: INSTALL 256
 - flask
 - python=3.10

$ conda list -n myapp | grep flask
flask                     2.2.3              pyhd8ed1ab_0    conda-forge

$  conda update -n myapp --quiet  --solver libmamba flask

Stage 1

USERINSTALLED 2560
 - conda-forge/noarch::flask==2.2.3=pyhd8ed1ab_0
 - conda-forge/linux-64::python==3.10.9=he550d4f_0_cpython
 - conda-forge/linux-64::ca-certificates==2022.12.7=ha878542_0
 - conda-forge/linux-64::openssl==3.1.0=h0b41bf4_0
task: UPDATE | ESSENTIAL 131840
 - flask!=2.2.3
 - conda-forge/linux-64::python==3.10.9=he550d4f_0_cpython
 - ca-certificates
 - openssl

The following packages will be downloaded:

    package                    |            build
    ---------------------------|-----------------
    flask-2.2.2                |     pyhd8ed1ab_0          74 KB  conda-forge
    ------------------------------------------------------------
                                           Total:          74 KB

The following packages will be DOWNGRADED:

  flask                                  2.2.3-pyhd8ed1ab_0 --> 2.2.2-pyhd8ed1ab_0

from conda-libmamba-solver.

Recommend Projects