# IS brian2tools compatible with conda version 4.11? **URL:** \ **Category:** Support\ **Created:** [19 December 2021 16:57 UTC](https://brian.discourse.group/t/is-brian2tools-compatible-with-conda-version-4-11/561 "2021-12-19T16:57:22Z")\ **Posts on this page:** 4\ **Page:** 1
**Author:** ![AreUTheDoctor](https://yyz2.discourse-cdn.com/free1/user_avatar/brian.discourse.group/areuthedoctor/32/319_2.png) [@AreUTheDoctor](https://brian.discourse.group/u/AreUTheDoctor)\ **Post date:** [19 December 2021 16:57 UTC](https://brian.discourse.group/t/is-brian2tools-compatible-with-conda-version-4-11/561/1 "2021-12-19T16:57:23Z")
# Description of problem Found conflicts! Looking for incompatible packages when attempt to install brian2tools Python version 3.10.1 conda version: 4.11.0 # Minimal code to reproduce problem > conda create --name brian2\_env > conda activate brian2\_env > conda config --add channels conda-forge > conda install brian2 > conda install -c brian-team brian2tools # Full traceback of error (if relevant) UnsatisfiableError: The following specifications were found to be incompatible with each other: Output in format: Requested package → Available versions ---
**Author:** ![mstimberg](https://yyz2.discourse-cdn.com/free1/user_avatar/brian.discourse.group/mstimberg/32/11_2.png) [@mstimberg](https://brian.discourse.group/u/mstimberg)\ **Post date:** [20 December 2021 16:48 UTC](https://brian.discourse.group/t/is-brian2tools-compatible-with-conda-version-4-11/561/2 "2021-12-20T16:48:48Z")
Hi @AreUTheDoctor . Unfortunately the `conda` error messages for dependency are not really useful nowadays (you might consider to use [mamba](https://github.com/mamba-org/mamba) instead, although I did not test whether it gives a better message in this example). The `brian2tools` package itself should be 3.10 compatible. Its conda package is also a “noarch” package (i.e. a pure Python package), which means that it does not need to be packaged separately for each Python version. The reason you are seeing the error is due to its dependencies: `brian2tools` depends on the `libneuroml` package for importing [NeuroML files](https://docs.neuroml.org/Landing.html). The `libneuroml` package itself depends on `pymongo` (Python interface to the Mongo database system), and the `pymongo` package is only available for Python versions up to 3.9 at the moment. We don’t currently hand optional dependencies well in the `brian2tools` package: e.g. if you are only interested in the plotting tools, you do not need `libneuroml`, `pylems`, and everything that comes with it. Similarly, `libneuroml` does not necessarily need the `pymongo` package (I think it does not even need it at all anymore, I’ll file an issue on their repository). Here’s the workaround I’d suggest at the moment: 1. Install the dependencies you are interested in, e.g. if you want the plotting tools and the Markdown export, use `conda install matplotlib markdown_strings`, if you are interested in NeuroML-related features, install the basic packages that work fine with conda, i.e. `conda install pylems`. 2. Then, install `brian2tools` with `pip` instead of `conda`, i.e. `pip install brian2tools`. This will also install `libneuroml`, but it will not install things like `pymongo`, since they are optional dependencies of the `pip` package. Let us know whether this works for you! ---
**Author:** ![AreUTheDoctor](https://yyz2.discourse-cdn.com/free1/user_avatar/brian.discourse.group/areuthedoctor/32/319_2.png) [@AreUTheDoctor](https://brian.discourse.group/u/AreUTheDoctor)\ **Post date:** [21 December 2021 01:04 UTC](https://brian.discourse.group/t/is-brian2tools-compatible-with-conda-version-4-11/561/3 "2021-12-21T01:04:38Z")
Yea thank you it works now. Speaking of mamba, since I downloaded all brian’s packages in a separate env, would installing mamba to the base env breaks anything? ====== Here’s a list of packages if interested ======= argon2-cffi 21.1.0 py310he2412df\_2 conda-forge async\_generator 1.10 py\_0 conda-forge atomicwrites 1.4.0 pyh9f0ad1d\_0 conda-forge attrs 21.2.0 pyhd8ed1ab\_0 conda-forge backcall 0.2.0 pyh9f0ad1d\_0 conda-forge backports 1.0 py\_2 conda-forge backports.functools\_lru\_cache 1.6.4 pyhd8ed1ab\_0 conda-forge bleach 4.1.0 pyhd8ed1ab\_0 conda-forge brian2 2.5.0.1 py310h476a331\_0 conda-forge brian2tools 0.3 pypi\_0 pypi brotli 1.0.9 h8ffe710\_6 conda-forge brotli-bin 1.0.9 h8ffe710\_6 conda-forge bzip2 1.0.8 h8ffe710\_4 conda-forge ca-certificates 2021.10.8 h5b45459\_0 conda-forge certifi 2021.10.8 py310h5588dad\_1 conda-forge cffi 1.15.0 py310hcbf9ad4\_0 conda-forge colorama 0.4.4 pyh9f0ad1d\_0 conda-forge cycler 0.11.0 pyhd8ed1ab\_0 conda-forge cython 0.29.26 py310h8a704f9\_0 conda-forge debugpy 1.5.1 py310h8a704f9\_0 conda-forge decorator 5.1.0 pyhd8ed1ab\_0 conda-forge defusedxml 0.7.1 pyhd8ed1ab\_0 conda-forge entrypoints 0.3 pyhd8ed1ab\_1003 conda-forge fonttools 4.28.5 py310he2412df\_0 conda-forge freetype 2.10.4 h546665d\_1 conda-forge gsl 2.7 hdfb1a43\_0 conda-forge icu 68.2 h0e60522\_0 conda-forge importlib-metadata 4.9.0 py310h5588dad\_0 conda-forge importlib\_resources 5.4.0 pyhd8ed1ab\_0 conda-forge iniconfig 1.1.1 pyh9f0ad1d\_0 conda-forge intel-openmp 2021.4.0 h57928b3\_3556 conda-forge ipykernel 6.6.0 py310hbbfc1a7\_0 conda-forge ipython 7.30.1 py310h5588dad\_0 conda-forge ipython\_genutils 0.2.0 py\_1 conda-forge jbig 2.1 h8d14728\_2003 conda-forge jedi 0.18.1 py310h5588dad\_0 conda-forge jinja2 3.0.3 pyhd8ed1ab\_0 conda-forge jpeg 9d h8ffe710\_0 conda-forge jsonschema 4.3.1 pyhd8ed1ab\_0 conda-forge jupyter\_client 7.1.0 pyhd8ed1ab\_0 conda-forge jupyter\_core 4.9.1 py310h5588dad\_1 conda-forge jupyterlab\_pygments 0.1.2 pyh9f0ad1d\_0 conda-forge kiwisolver 1.3.2 py310h476a331\_1 conda-forge lcms2 2.12 h2a16943\_0 conda-forge lerc 3.0 h0e60522\_0 conda-forge libblas 3.9.0 12\_win64\_mkl conda-forge libbrotlicommon 1.0.9 h8ffe710\_6 conda-forge libbrotlidec 1.0.9 h8ffe710\_6 conda-forge libbrotlienc 1.0.9 h8ffe710\_6 conda-forge libcblas 3.9.0 12\_win64\_mkl conda-forge libclang 11.1.0 default\_h5c34c98\_1 conda-forge libdeflate 1.8 h8ffe710\_0 conda-forge libffi 3.4.2 h8ffe710\_5 conda-forge liblapack 3.9.0 12\_win64\_mkl conda-forge libneuroml 0.3.1 pypi\_0 pypi libpng 1.6.37 h1d00b33\_2 conda-forge libsodium 1.0.18 h8d14728\_1 conda-forge libtiff 4.3.0 hd413186\_2 conda-forge libzlib 1.2.11 h8ffe710\_1013 conda-forge lxml 4.7.1 pypi\_0 pypi lz4-c 1.9.3 h8ffe710\_1 conda-forge m2w64-gcc-libgfortran 5.3.0 6 conda-forge m2w64-gcc-libs 5.3.0 7 conda-forge m2w64-gcc-libs-core 5.3.0 7 conda-forge m2w64-gmp 6.1.0 2 conda-forge m2w64-libwinpthread-git 5.0.0.4634.697f757 2 conda-forge markdown\_strings 3.1.1 py\_0 conda-forge markupsafe 2.0.1 py310he2412df\_1 conda-forge matplotlib 3.5.1 py310h5588dad\_0 conda-forge matplotlib-base 3.5.1 py310h79a7439\_0 conda-forge matplotlib-inline 0.1.3 pyhd8ed1ab\_0 conda-forge mistune 0.8.4 py310he2412df\_1005 conda-forge mkl 2021.4.0 h0e2418a\_729 conda-forge more-itertools 8.12.0 pyhd8ed1ab\_0 conda-forge mpmath 1.2.1 pyhd8ed1ab\_0 conda-forge msys2-conda-epoch 20160418 1 conda-forge munkres 1.1.4 pyh9f0ad1d\_0 conda-forge nbclient 0.5.9 pyhd8ed1ab\_0 conda-forge nbconvert 6.3.0 py310h5588dad\_1 conda-forge nbformat 5.1.3 pyhd8ed1ab\_0 conda-forge nest-asyncio 1.5.4 pyhd8ed1ab\_0 conda-forge notebook 6.4.6 pyha770c72\_0 conda-forge numpy 1.21.4 py310h5ebf175\_0 conda-forge olefile 0.46 pyh9f0ad1d\_1 conda-forge openjpeg 2.4.0 hb211442\_1 conda-forge openssl 1.1.1l h8ffe710\_0 conda-forge packaging 21.3 pyhd8ed1ab\_0 conda-forge pandoc 2.16.2 h8ffe710\_0 conda-forge pandocfilters 1.5.0 pyhd8ed1ab\_0 conda-forge parso 0.8.3 pyhd8ed1ab\_0 conda-forge pickleshare 0.7.5 py\_1003 conda-forge pillow 8.4.0 py310h22f3323\_0 conda-forge pip 21.3.1 pyhd8ed1ab\_0 conda-forge pluggy 1.0.0 py310h5588dad\_2 conda-forge prometheus\_client 0.12.0 pyhd8ed1ab\_0 conda-forge prompt-toolkit 3.0.24 pyha770c72\_0 conda-forge py 1.11.0 pyh6c4a22f\_0 conda-forge py-cpuinfo 8.0.0 pyhd8ed1ab\_0 conda-forge pycparser 2.21 pyhd8ed1ab\_0 conda-forge pygments 2.10.0 pyhd8ed1ab\_0 conda-forge pylems 0.5.9 pypi\_0 pypi pyparsing 3.0.6 pyhd8ed1ab\_0 conda-forge pyqt 5.12.3 py310h5588dad\_8 conda-forge pyqt-impl 5.12.3 py310h8a704f9\_8 conda-forge pyqt5-sip 4.19.18 py310h8a704f9\_8 conda-forge pyqtchart 5.12 py310h8a704f9\_8 conda-forge pyqtwebengine 5.12.1 py310h8a704f9\_8 conda-forge pyrsistent 0.18.0 py310he2412df\_0 conda-forge pytest 6.2.5 py310h5588dad\_1 conda-forge python 3.10.1 h9a09f29\_0\_cpython conda-forge python-dateutil 2.8.2 pyhd8ed1ab\_0 conda-forge python\_abi 3.10 2\_cp310 conda-forge pywin32 302 py310he2412df\_2 conda-forge pywinpty 1.1.6 py310h00ffb61\_0 conda-forge pyzmq 22.3.0 py310h73ada01\_1 conda-forge qt 5.12.9 h5909a2a\_4 conda-forge scipy 1.7.3 py310h33db832\_0 conda-forge send2trash 1.8.0 pyhd8ed1ab\_0 conda-forge setuptools 59.6.0 py310h5588dad\_0 conda-forge setuptools-scm 6.3.2 pypi\_0 pypi six 1.16.0 pyh6c4a22f\_0 conda-forge sqlite 3.37.0 h8ffe710\_0 conda-forge sympy 1.9 py310h5588dad\_1 conda-forge tbb 2021.4.0 h2d74725\_1 conda-forge terminado 0.12.1 py310h5588dad\_1 conda-forge testpath 0.5.0 pyhd8ed1ab\_0 conda-forge tk 8.6.11 h8ffe710\_1 conda-forge toml 0.10.2 pyhd8ed1ab\_0 conda-forge tomli 2.0.0 pypi\_0 pypi tornado 6.1 py310he2412df\_2 conda-forge traitlets 5.1.1 pyhd8ed1ab\_0 conda-forge tzdata 2021e he74cb21\_0 conda-forge ucrt 10.0.20348.0 h57928b3\_0 conda-forge vc 14.2 hb210afc\_5 conda-forge vs2015\_runtime 14.29.30037 h902a5da\_5 conda-forge wcwidth 0.2.5 pyh9f0ad1d\_2 conda-forge webencodings 0.5.1 py\_1 conda-forge wheel 0.37.0 pyhd8ed1ab\_1 conda-forge winpty 0.4.3 4 conda-forge xz 5.2.5 h62dcd97\_1 conda-forge zeromq 4.3.4 h0e60522\_1 conda-forge zipp 3.6.0 pyhd8ed1ab\_0 conda-forge zlib 1.2.11 h8ffe710\_1013 conda-forge zstd 1.5.0 h6255e5f\_0 conda-forge ---
**Author:** ![mstimberg](https://yyz2.discourse-cdn.com/free1/user_avatar/brian.discourse.group/mstimberg/32/11_2.png) [@mstimberg](https://brian.discourse.group/u/mstimberg)\ **Post date:** [21 December 2021 14:10 UTC](https://brian.discourse.group/t/is-brian2tools-compatible-with-conda-version-4-11/561/4 "2021-12-21T14:10:03Z")
Installing mamba in the base env will not change anything with respect to the environment which has Brian installed. The idea is that you can use `mamba` instead of `conda` to install packages, etc., and it will use a smarter algorithm to figure out dependencies/conflicts, and give better errors. But just to be clear: here, it won’t be able to install `brian2tools` either on Python 3.10, since the dependency conflict is real – it should just give you a clearer error message. I cannot test this right now, though.