Created
August 19, 2022 06:59
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Python development environment via nix-shell and pip
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| {pkgs ? import <nixpkgs> {}}: let | |
| myPython = pkgs.python37; | |
| pythonWithPkgs = myPython.withPackages (pythonPkgs: | |
| with pythonPkgs; [ | |
| pip | |
| setuptools | |
| wheel | |
| ]); | |
| lib-path = with pkgs; | |
| lib.makeLibraryPath [ | |
| libffi | |
| openssl | |
| stdenv.cc.cc | |
| zlib | |
| ]; | |
| venvDir = "./.venv"; | |
| shell = pkgs.mkShell { | |
| buildInputs = [ | |
| # my python and packages | |
| pythonWithPkgs | |
| # other packages needed for compiling python libs | |
| pkgs.readline | |
| pkgs.libffi | |
| pkgs.openssl | |
| # unfortunately needed because of messing with LD_LIBRARY_PATH below | |
| pkgs.git | |
| pkgs.openssh | |
| pkgs.rsync | |
| ]; | |
| shellHook = '' | |
| # Allow the use of wheels. | |
| SOURCE_DATE_EPOCH=$(date +%s) | |
| # Augment the dynamic linker path | |
| export "LD_LIBRARY_PATH=$LD_LIBRARY_PATH:${lib-path}" | |
| if [ -d "${venvDir}" ]; then | |
| echo "Skipping venv creation, '${venvDir}' already exists" | |
| else | |
| echo "Creating new venv environment in path: '${venvDir}'" | |
| # Note that the module venv was only introduced in python 3, so for 2.7 | |
| # this needs to be replaced with a call to virtualenv | |
| ${myPython.interpreter} -m venv "${venvDir}" | |
| fi | |
| PYTHONPATH=$PWD/${venvDir}/${myPython.sitePackages}/:$PYTHONPATH | |
| source "${venvDir}/bin/activate" | |
| ''; | |
| }; | |
| in | |
| shell |
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