Bioconda as a channel depends on Conda Forge and so specifying bioconda as the only channel is incorrect. Instead, a proper specification for using the bioconda channel is

name: freebayes
channels:
  - conda-forge
  - bioconda
  - defaults
dependencies:
 - freebayes=1.3.6

See the channel configuration in the Usage section.

Answer from merv on Stack Overflow
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GitHub
github.com › idaholab › moose › discussions › 26822
Installation Issue: MOOSE Installation Fails on Linux Ubuntu 22.04.3 as libgcc-ng >=12 does not exist · idaholab/moose · Discussion #26822
Channels: - https://conda.software.inl.gov/public - defaults Platform: linux-64 Collecting package metadata (repodata.json): done Solving environment: failed LibMambaUnsatisfiableError: Encountered problems while solving: - nothing provides libgcc-ng >=12 needed by moose-wasp-2023.11.29-build_0 Could not solve for environment specs The following package could not be installed └─ moose-dev 2024.01.23** is not installable because it requires └─ moose-wasp 2023.11.29.* , which requires └─ libgcc-ng >=12 , which does not exist (perhaps a missing channel).
Author   idaholab
Discussions

unable to create conda environment
Hi, I was trying to install PhenoSV following the instruction in README but have encountered the issue to create conda environment when running conda env create --name phenosv --file phenosv.yml It seems like the packages in the phenosv.... More on github.com
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5
December 13, 2023
Cannot.Get.ChopperToRun
Hi, I am trying to run chopper on a University HPC cluster -With mamba install -c bioconda chopper I get Could not solve for environment specs The following package could not be installed └─ choppe... More on github.com
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1
September 10, 2024
python - PackagesNotFoundError: The following packages are not available from current channels (libgcc-ng and libstdcxx-ng) - Stack Overflow
I am trying to run the yml file but fail to solve the environment. The error is ResolvePackageNotFound: libgcc-ng libstdcxx-ng Then I tried conda installs conda install -c anaconda libgcc-ng conda More on stackoverflow.com
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installing qiime2 into windows 11
I am having trouble installing QIIME2 into Windows 11 with conda. I used the commands from the QIIME2 website: wget https://data.qiime2.org/distro/amplicon/qiime2-amplicon-2024.5-py38-linux-conda.yml conda env create -… More on forum.qiime2.org
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1
0
June 21, 2024
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Anaconda.org
anaconda.org › conda-forge › libgcc-ng
libgcc-ng - conda-forge | Anaconda.org
Install libgcc-ng with Anaconda.org. The GCC low-level runtime library
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GitHub
github.com › WGLab › PhenoSV › issues › 1
unable to create conda environment · Issue #1 · WGLab/PhenoSV
December 13, 2023 - Could not solve for environment specs The following packages are incompatible ├─ pybedtools 0.9.0** is installable with the potential options │ ├─ pybedtools 0.9.0 would require │ │ └─ libgcc-ng >=12 , which conflicts with any installable versions previously reported; │ ├─ pybedtools 0.9.0 would require │ │ └─ python >=3.6,<3.7.0a0 with the potential options │ │ ├─ python [3.6.0|3.6.1|...|3.6.9], which can be installed; │ │ └─ python [3.6.7|3.7.1] would require │ │ └─ openssl >=1.1.1,<1.1.2.0a0 , which does not exist (perhaps a missing ch
Author   WGLab
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Anaconda.org
anaconda.org › anaconda › libgcc-ng
libgcc-ng - anaconda | Anaconda.org
Install libgcc-ng with Anaconda.org. The GCC low-level runtime library
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GitHub
github.com › wdecoster › chopper › issues › 41
Cannot.Get.ChopperToRun · Issue #41 · wdecoster/chopper
September 10, 2024 - -With mamba install -c bioconda chopper I get Could not solve for environment specs The following package could not be installed └─ chopper is not installable because it requires └─ libgcc-ng >=12 , which does not exist (perhaps a missing channel).
Author   wdecoster
Find elsewhere
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GitHub
github.com › conda-forge › conda-forge.github.io › issues › 763
Cannot install python=3.7 on Linux (libgcc-ng missing?) · Issue #763 · conda-forge/conda-forge.github.io
July 26, 2021 - Manually digging into this, it looks like libgcc-ng and libstdcxx-ng are both missing from the repodata.json file. When I run conda create -n test sqlite, this installs sqlite 3.22.0, which seems to be the lates tversion of sqlite on conda-forge without an explicit dependency on libgcc-ng, so it looks like a missing libgcc-ng might be the problem?
Author   conda-forge
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Prefix.dev
prefix.dev › channels › conda-forge › packages › libgcc-ng
libgcc-ng - conda-forge
A community led collection of recipes, build infrastructure and distributions for the conda package manager.
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Intel Community
community.intel.com › t5 › Intel-Distribution-for-Python › Cannot-install-tensorflow-2-14-0-from-Intel-conda-channel › m-p › 1551469
Solved: Re: Cannot install tensorflow 2.14.0 from Intel conda channel - Intel Community
December 8, 2023 - Could not solve for environment specs The following package could not be installed └─ tensorflow 2.14.0** is not installable because it requires └─ flatbuffers >=23.5.26 , which does not exist (perhaps a missing channel).
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GitHub
github.com › conda › conda-build › issues › 5876
Conda build not querying the channels passed on the command line (for host environment) · Issue #5876 · conda/conda-build
December 9, 2025 - # packages in environment at /opt/conda: # # Name Version Build Channel _libgcc_mutex 0.1 conda_forge conda-forge _openmp_mutex 4.5 2_gnu conda-forge anaconda-cli-base 0.6.0 pyhd8ed1ab_0 conda-forge anaconda-client 1.13.1 pyhcf101f3_0 conda-forge annotated-types 0.7.0 pyhd8ed1ab_1 conda-forge archspec 0.2.5 pyhd8ed1ab_0 conda-forge attrs 25.4.0 pyh71513ae_0 conda-forge beautifulsoup4 4.14.3 pyha770c72_0 conda-forge boltons 25.0.0 pyhd8ed1ab_0 conda-forge brotli-python 1.2.0 py312hdb49522_1 conda-forge bzip2 1.0.8 hda65f42_8 conda-forge c-ares 1.34.5 hb9d3cd8_0 conda-forge ca-certificates 2025.
Author   conda
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GitHub
github.com › conda › conda › issues › 11673
conda create UnsatisfiableError for multiple packages doesn't show real error · Issue #11673 · conda/conda
July 29, 2022 - Press CTRL-C to abort. failed UnsatisfiableError: The following specifications were found to be incompatible with each other: Output in format: Requested package -> Available versions Package libgcc-ng conflicts for: pytest -> python[version='>=3.7,<3.8.0a0'] -> libgcc-ng[version='>=7.2.0|>=7.3.0|>=7.5.0'] libgcc-ng=11.2.0
Author   conda
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GitHub
github.com › bioconda › bioconda-recipes › issues › 11083
unicycler 0.4.6: Dependencies missing libgcc-ng and libstdcxx-ng · Issue #11083 · bioconda/bioconda-recipes
September 26, 2018 - conda create -n unicycler-0.4.6 unicycler=0.4.6 Fetching package metadata ............... Solving package specifications: PackageNotFoundError: Dependencies missing in current linux-64 channels: - unicycler 0.4.6* -> libgcc-ng >=7.3.0 - unicycler 0.4.6* -> libstdcxx-ng >=7.3.0 (and similarly for the other packages)
Author   bioconda
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GitHub
github.com › conda › conda › issues › 11204
Weird conflict errors · Issue #11204 · conda/conda
February 9, 2022 - Press CTRL-C to abort. failed Traceback ...'conda_forge|main'] cudatoolkit=11.0 -> libgcc-ng[version='>=7.3.0'] -> _libgcc_mutex[version='*|0.1',build='conda_forge|main'] Package cudatoolkit conflicts for: cudatoolkit=11.0 rapids==21.12 -> cudatoolkit[version='11.0.*|11.2.*|11.5.*|11.4.*'] ...
Author   conda
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GitHub
github.com › v-iashin › video_features › issues › 133
Error while trying to create env using .yml file · Issue #133 · v-iashin/video_features
I get the following error in running: conda env create -f conda_env.yml - pytorch - nvidia - conda-forge - defaults Platform: win-64 Collecting package metadata (repodata.json): done Solving environment: failed Channels: - pytorch - nvid...
Author   v-iashin
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Reddit
reddit.com › r/codinghelp › running into error when installing conda package
r/CodingHelp on Reddit: Running Into Error When Installing Conda Package
April 27, 2025 -

Hi!! I need to install the Proteinortho package (Proteinortho | Anaconda.org) on Miniconda3 to process bioinformatics data. Since the package is only compatible on Linux/MacOS systems (?), I am doing this through Ubuntu WSL. Whenever I run the command to install, this is what happens:

(base) jeannedng@LAPTOP-GE36OC36:~$ conda install bioconda::proteinortho

Channels:

- defaults

- bioconda

Platform: linux-64

Collecting package metadata (repodata.json): done

Solving environment: failed

LibMambaUnsatisfiableError: Encountered problems while solving:

- nothing provides openmp needed by proteinortho-6.0-py27pl526h9ad8f1e_0

Could not solve for environment specs

The following packages are incompatible

└─ proteinortho =* * is not installable because there are no viable options

├─ proteinortho [6.0|6.0.1|...|6.0b] would require

│ └─ openmp =* *, which does not exist (perhaps a missing channel);

├─ proteinortho 6.0.23 would require

│ └─ liblapacke >=3.8.0,<3.9.0a0 *, which does not exist (perhaps a missing channel);

├─ proteinortho [6.0.24|6.0.25|...|6.0.33] would require

│ └─ liblapacke >=3.8.0,<4.0a0 *, which does not exist (perhaps a missing channel);

├─ proteinortho [6.0.34|6.0.35|...|6.3.5] would require

│ └─ blis =* *, which does not exist (perhaps a missing channel);

└─ proteinortho 6.3.5 would require

└─ libgfortran =* *, which does not exist (perhaps a missing channel).

I apologize if I use terminologies wrong, I am not an IT student nor have any solid background on coding. Let me know what I am doing wrong and what I should be doing. Thank you!