Mamba Error at the end of installation process

[ElonMusk9577]

Solution to issue cannot be found in the documentation.

• I checked the documentation.

Issue

I installed the latest Miniforge 24.11.3-0 on Ubuntu 22.04 (x86). At the end of the installation process, there is an error message

==> For changes to take effect, close and re-open your current shell. <==

Miniforge3-Linux-x86_64.sh: line 517: [: 1
24: integer expression expected
usage: mamba [-h] [-v] [--no-plugins] [-V] COMMAND ...
mamba: error: argument COMMAND: invalid choice: 'shell' (choose from activate, clean, commands, compare, config, create, deactivate, env, export, info, init, install, list, notices, package, doctor, repoquery, remove, uninstall, rename, run, search, update, upgrade)

Installed packages

# packages in environment at /home/fw001/miniforge3:
#
# Name                    Version                   Build  Channel
_libgcc_mutex             0.1                 conda_forge    conda-forge
_openmp_mutex             4.5                       2_gnu    conda-forge
archspec                  0.2.5              pyhd8ed1ab_0    conda-forge
boltons                   24.0.0             pyhd8ed1ab_1    conda-forge
brotli-python             1.1.0           py312h2ec8cdc_2    conda-forge
bzip2                     1.0.8                h4bc722e_7    conda-forge
c-ares                    1.34.4               hb9d3cd8_0    conda-forge
ca-certificates           2024.12.14           hbcca054_0    conda-forge
certifi                   2024.12.14         pyhd8ed1ab_0    conda-forge
cffi                      1.17.1          py312h06ac9bb_0    conda-forge
charset-normalizer        3.4.1              pyhd8ed1ab_0    conda-forge
colorama                  0.4.6              pyhd8ed1ab_1    conda-forge
conda                     24.11.3         py312h7900ff3_0    conda-forge
conda-libmamba-solver     24.9.0             pyhd8ed1ab_0    conda-forge
conda-package-handling    2.4.0              pyh7900ff3_2    conda-forge
conda-package-streaming   0.11.0             pyhd8ed1ab_0    conda-forge
distro                    1.9.0              pyhd8ed1ab_1    conda-forge
fmt                       11.0.2               h434a139_0    conda-forge
frozendict                2.4.6           py312h66e93f0_0    conda-forge
h2                        4.1.0              pyhd8ed1ab_1    conda-forge
hpack                     4.0.0              pyhd8ed1ab_1    conda-forge
hyperframe                6.0.1              pyhd8ed1ab_1    conda-forge
idna                      3.10               pyhd8ed1ab_1    conda-forge
jsonpatch                 1.33               pyhd8ed1ab_1    conda-forge
jsonpointer               3.0.0           py312h7900ff3_1    conda-forge
keyutils                  1.6.1                h166bdaf_0    conda-forge
krb5                      1.21.3               h659f571_0    conda-forge
ld_impl_linux-64          2.43                 h712a8e2_2    conda-forge
libarchive                3.7.7                h4585015_3    conda-forge
libcurl                   8.11.1               h332b0f4_0    conda-forge
libedit                   3.1.20240808    pl5321h7949ede_0    conda-forge
libev                     4.33                 hd590300_2    conda-forge
libexpat                  2.6.4                h5888daf_0    conda-forge
libffi                    3.4.2                h7f98852_5    conda-forge
libgcc                    14.2.0               h77fa898_1    conda-forge
libgcc-ng                 14.2.0               h69a702a_1    conda-forge
libgomp                   14.2.0               h77fa898_1    conda-forge
libiconv                  1.17                 hd590300_2    conda-forge
liblzma                   5.6.3                hb9d3cd8_1    conda-forge
libmamba                  1.5.12               h49b8a8d_0    conda-forge
libmambapy                1.5.12          py312hbaee817_0    conda-forge
libnghttp2                1.64.0               h161d5f1_0    conda-forge
libnsl                    2.0.1                hd590300_0    conda-forge
libsolv                   0.7.30               h3509ff9_0    conda-forge
libsqlite                 3.48.0               hee588c1_0    conda-forge
libssh2                   1.11.1               hf672d98_0    conda-forge
libstdcxx                 14.2.0               hc0a3c3a_1    conda-forge
libstdcxx-ng              14.2.0               h4852527_1    conda-forge
libuuid                   2.38.1               h0b41bf4_0    conda-forge
libxcrypt                 4.4.36               hd590300_1    conda-forge
libxml2                   2.13.5               h0d44e9d_1    conda-forge
libzlib                   1.3.1                hb9d3cd8_2    conda-forge
lz4-c                     1.10.0               h5888daf_1    conda-forge
lzo                       2.10              hd590300_1001    conda-forge
mamba                     1.5.12          py312h9460a1c_0    conda-forge
menuinst                  2.2.0           py312h7900ff3_0    conda-forge
ncurses                   6.5                  h2d0b736_2    conda-forge
openssl                   3.4.0                h7b32b05_1    conda-forge
packaging                 24.2               pyhd8ed1ab_2    conda-forge
pip                       24.3.1             pyh8b19718_2    conda-forge
platformdirs              4.3.6              pyhd8ed1ab_1    conda-forge
pluggy                    1.5.0              pyhd8ed1ab_1    conda-forge
pybind11-abi              4                    hd8ed1ab_3    conda-forge
pycosat                   0.6.6           py312h66e93f0_2    conda-forge
pycparser                 2.22               pyh29332c3_1    conda-forge
pysocks                   1.7.1              pyha55dd90_7    conda-forge
python                    3.12.8          h9e4cc4f_1_cpython    conda-forge
python_abi                3.12                    5_cp312    conda-forge
readline                  8.2                  h8228510_1    conda-forge
reproc                    14.2.5.post0         hb9d3cd8_0    conda-forge
reproc-cpp                14.2.5.post0         h5888daf_0    conda-forge
requests                  2.32.3             pyhd8ed1ab_1    conda-forge
ruamel.yaml               0.18.10         py312h66e93f0_0    conda-forge
ruamel.yaml.clib          0.2.8           py312h66e93f0_1    conda-forge
setuptools                75.8.0             pyhff2d567_0    conda-forge
tk                        8.6.13          noxft_h4845f30_101    conda-forge
tqdm                      4.67.1             pyhd8ed1ab_1    conda-forge
truststore                0.10.0             pyhd8ed1ab_0    conda-forge
tzdata                    2025a                h78e105d_0    conda-forge
urllib3                   2.3.0              pyhd8ed1ab_0    conda-forge
wheel                     0.45.1             pyhd8ed1ab_1    conda-forge
yaml-cpp                  0.8.0                h59595ed_0    conda-forge
zstandard                 0.23.0          py312hef9b889_1    conda-forge
zstd                      1.5.6                ha6fb4c9_0    conda-forge

Environment info

active environment : base
    active env location : /home/fw001/miniforge3
            shell level : 1
       user config file : /home/fw001/.condarc
 populated config files : /home/fw001/miniforge3/.condarc
          conda version : 24.11.3
    conda-build version : not installed
         python version : 3.12.8.final.0
                 solver : libmamba (default)
       virtual packages : __archspec=1=skylake
                          __conda=24.11.3=0
                          __cuda=12.4=0
                          __glibc=2.35=0
                          __linux=6.8.0=0
                          __unix=0=0
       base environment : /home/fw001/miniforge3  (writable)
      conda av data dir : /home/fw001/miniforge3/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/fw001/miniforge3/pkgs
                          /home/fw001/.conda/pkgs
       envs directories : /home/fw001/miniforge3/envs
                          /home/fw001/.conda/envs
               platform : linux-64
             user-agent : conda/24.11.3 requests/2.32.3 CPython/3.12.8 Linux/6.8.0-51-generic ubuntu/22.04.5 glibc/2.35 solver/libmamba conda-libmamba-solver/24.9.0 libmambapy/1.5.12
                UID:GID : 1000:1000
             netrc file : None
           offline mode : False

[RealXuChe]

I ran into a similar error:

no change     /home/<user>/.miniforge3/etc/profile.d/conda.csh
modified      /home/<user>/.zshrc

==> For changes to take effect, close and re-open your current shell. <==

Miniforge3-Linux-x86_64.sh: 第 517 行：[: 1
24: 需要整数表达式
usage: mamba [-h] [-v] [--no-plugins] [-V] COMMAND ...
mamba: error: argument COMMAND: invalid choice: 'shell' (choose from activate, clean, commands, compare, config, create, deactivate, env, export, info, init, install, list, notices, package, doctor, repoquery, remove, uninstall, rename, run, search, update, upgrade)   

After some debugging, I found the problem was caused by this part of the installer script:

if [ -f "$PREFIX/bin/mamba" ]; then
    if [ "$("$PREFIX/bin/mamba" --version | cut -d' ' -f2 | cut -d'.' -f1)" -lt 2 ]; then
        case $SHELL in
            *zsh) "$PREFIX/bin/python" -m mamba.mamba init zsh ;;
            *) "$PREFIX/bin/python" -m mamba.mamba init ;;
        esac
    else
        case $SHELL in
            *zsh) "$PREFIX/bin/mamba" shell init --shell zsh ;;
            *) "$PREFIX/bin/mamba" shell init ;;
        esac
    fi
fi

The issue was specifically with this line:

if [ "$("$PREFIX/bin/mamba" --version | cut -d' ' -f2 | cut -d'.' -f1)" -lt 2 ]; then

The problem is that mamba --version outputs two lines of version info:

$ ~/.miniforge3/bin/mamba --version
mamba 1.5.12
conda 24.11.3

When you process that output with cut, it results in:

$ ~/.miniforge3/bin/mamba --version | cut -d' ' -f2 | cut -d'.' -f1
1
24

This makes the shell comparison fail because it expects a single integer.

To fix this, I modified the code to filter out only the mamba version:

if [ "$("$PREFIX/bin/mamba" --version | grep mamba | cut -d' ' -f2 | cut -d'.' -f1)" -lt 2 ]; then

Using grep mamba ensures we only grab the mamba version and ignore anything else.

(Also, be careful when editing the installer script directly. It includes binary data at the end, so saving changes with a text editor could corrupt it.)

[HuangWanqiu]

I use -b to resolve this issue.

In the README, there is a line:

For non-interactive installs (for example, on a CI), the following command can be used (call with -h to list the extra options):
bash Miniforge3-$(uname)-$(uname -m).sh -b"

[jjerphan]

Being addressed by conda/constructor#936.

Please use https://github.com/conda-forge/miniforge/releases/tag/24.11.2-1 in the meantime.

[3nrique0]

I have the same error I noticed the following:
When I create a smaller environment (with numpy, matplotlib, pandas, ipython), at the end of the creation of the environment I get an:
run 'mamba init' to be able to run mamba activate/deactivate and start a new shell session. Or use conda to activate/deactivate

When I run mamba init I get:
no change /work/user/home/miniforge3/condabin/conda no change /work/user/home/miniforge3/bin/conda no change /work/user/home/miniforge3/bin/conda-env no change /work/user/home/miniforge3/bin/activate no change /work/user/home/miniforge3/bin/deactivate no change /work/user/home/miniforge3/etc/profile.d/conda.sh no change /work/user/home/miniforge3/etc/fish/conf.d/conda.fish no change /work/user/home/miniforge3/shell/condabin/Conda.psm1 no change /work/user/home/miniforge3/shell/condabin/conda-hook.ps1 no change /work/user/home/miniforge3/lib/python3.12/site-packages/xontrib/conda.xsh no change /work/user/home/miniforge3/etc/profile.d/conda.csh no change /home/user/.bashrc No action taken. WARNING conda.common.path.windows:_path_to(100): cygpath is not available, fallback to manual path conversion Added mamba to /home/user/.bashrc

However noting is added to my ~/.bashrc

[tloredo]

I'm having the same issue on macOS 14.7.4 (Sonoma).

Please use https://github.com/conda-forge/miniforge/releases/tag/24.11.2-1 in the meantime.

Thanks for this workaround. Please note that despite this problem being identified 3+ weeks ago, the installer link at the Conda-forge website still points to 24.11.3-0. So users affected by this bug (which evidently appears on multiple platforms) will go through the installation process before hitting the error, and then have to search for the issue to locate the workaround, and then have to install again. Perhaps the website should be updated to point to the prior version, or at least warn of the problem and point here for the workaround.

[jjerphan]

@hmaarrfk: As discussed privately previously, would it be possible to change the latest version of miniforge until a new version of conda/constructor is released?

[hmaarrfk]

I’m not sure that is wise since the preceding version has PyPy and mambaforge downloaded visible on the same page. That has caused a lot of pain.

Is there a way to accelerate a fix?

[jjerphan]

Several options:

• a new version of conda/constructor gets released, and then a new version of Miniforge is released (I cannot perform a release of conda/constructor myself)
• mamba 2.0.7 gets released, and a new version of Miniforge is released with it (we are working towards the release of 2.0.7)

[hmaarrfk]

I can backport fixes to conda forge if you want to reappeared a PR

[jjerphan]

What do you want to do?

Can you be more explicit?