#4360·mamba

Allow cancelling when waiting for other mamba process to finish

Author: davidbrochartCreated Jul 27, 2026Updated Jul 27, 2026

Troubleshooting docs

My problem is not solved in the Troubleshooting docs

Anaconda default channels

I do NOT use the Anaconda default channels (pkgs/* etc.)

How did you install Mamba?

Micromamba

Search tried in issue tracker

Waiting for other mamba process to finish

Latest version of Mamba

My problem is not solved with the latest version

Tried in Conda?

I do not have this problem with Conda, just with Mamba

Describe your issue

In terminal A, start installing a package and don't confirm changes yet. In terminal B, try to install a package. It pauses with:

error    libmamba Could not set lock (Resource temporarily unavailable)
warning  libmamba Cannot lock '/home/david/.local/share/mamba/pkgs'
    Waiting for other mamba process to finish

In terminal B, press ctrl-c: nothing happens. In terminal A, cancelling the installation by pressing n (at Confirm changes: [Y/n]) unlocks terminal B, but it exits after package resolution without asking to confirm changes, effectively not installing anything.

mamba info / micromamba info

bash

libmamba version : 2.8.1
     micromamba version : 2.8.1
           curl version : libcurl/8.20.0 OpenSSL/3.5.6 zlib/1.3.2 zstd/1.5.7 libssh2/1.11.1 nghttp2/1.68.1 mit-krb5/1.22.2
     libarchive version : libarchive 3.8.7 zlib/1.3.2 bz2lib/1.0.8 libzstd/1.5.7 libb2/bundled
       envs directories : /home/david/.local/share/mamba/envs
          package cache : /home/david/.local/share/mamba/pkgs
                          /home/david/.mamba/pkgs
            environment : tmp (active)
           env location : /home/david/.local/share/mamba/envs/tmp
      user config files : /home/david/.mambarc
 populated config files :
       virtual packages : __unix=0=0
                          __linux=7.0.0=0
                          __glibc=2.43=0
                          __archspec=1=x86_64_v3
               channels : https://conda.anaconda.org/conda-forge/linux-64
                          https://conda.anaconda.org/conda-forge/noarch
       base environment : /home/david/.local/share/mamba
               platform : linux-64

Logs

bash

environment.yml

yaml

~/.condarc

yaml

Source: mamba-org/mamba

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