nixpkgs/pkgs/applications/editors/jupyter/kernel.nix

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{ lib, stdenv, python3}:
let
default = {
python3 = let
env = (python3.withPackages (ps: with ps; [ ipykernel ]));
in {
displayName = "Python 3";
argv = [
"${env.interpreter}"
"-m"
"ipykernel_launcher"
"-f"
"{connection_file}"
];
language = "python";
logo32 = "${env.sitePackages}/ipykernel/resources/logo-32x32.png";
logo64 = "${env.sitePackages}/ipykernel/resources/logo-64x64.png";
};
};
in
{
inherit default;
# Definitions is an attribute set.
create = { definitions ? default }: with lib; stdenv.mkDerivation rec {
name = "jupyter-kernels";
src = "/dev/null";
unpackCmd = "mkdir jupyter_kernels";
installPhase = ''
mkdir kernels
${concatStringsSep "\n" (mapAttrsToList (kernelName: kernel:
let
config = builtins.toJSON {
display_name = if (kernel.displayName != "")
then kernel.displayName
else kernelName;
argv = kernel.argv;
language = kernel.language;
};
logo32 =
if (kernel.logo32 != null)
then "ln -s ${kernel.logo32} 'kernels/${kernelName}/logo-32x32.png';"
else "";
logo64 =
if (kernel.logo64 != null)
then "ln -s ${kernel.logo64} 'kernels/${kernelName}/logo-64x64.png';"
else "";
in ''
mkdir 'kernels/${kernelName}';
echo '${config}' > 'kernels/${kernelName}/kernel.json';
${logo32}
${logo64}
'') definitions)}
mkdir $out
cp -r kernels $out
'';
meta = {
description = "Wrapper to create jupyter notebook kernel definitions";
homepage = http://jupyter.org/;
maintainers = with maintainers; [ aborsu ];
};
};
}