nixos - ipython with octave kernel

notebook-impure.nix

with import <nixpkgs> {}; {
  pyEnv = stdenv.mkDerivation {
    name = "octave-kernel";

    buildInputs = [ python27Packages.pip python27Packages.virtualenv python27Packages.jupyter python27Packages.notebook octave gnuplot];

    shellHook = ''
      if [ ! -d venv ] ; then
        virtualenv venv
        ./venv/bin/pip install octave_kernel
        ./venv/bin/python -m octave_kernel.install
      fi

      jupyter notebook --ip='*' --no-browser 
    '';
  };
}

notebook-pure.nix

with import <nixpkgs> {}; {
  pyEnv = stdenv.mkDerivation {
    name = "octave-kernel";
    src = fetchgit {
      url = "git://github.com/Calysto/octave_kernel.git";
      rev = "8a796d3f9ac468ddf490fd2669e38ff37f3056dc";
      # per [j@nixos32:~]$ nix-prefetch-git https://github.com/Calysto/octave_kernel.git
      sha256 = "e660a2ae3bc833cc77a5ab091b6219c7d8e088e75c3624a30297e2a9dc79f0b6";
    };

    buildInputs = [ python27Packages.ipython python27Packages.notebook octave];

    shellHook = ''
      export PYTHONPATH=$src:$PYTHONPATH
      if ! (ipython kernelspec list | grep -q octave) ; then
        echo "install octave kernel"
        python -m octave_kernel.install
      fi

      ipython notebook --ip='*' --no-browser  &
    '';
  };
}

notebook-pure.txt

ipython kernelspec list
Available kernels:
  python2    /nix/store/zs3909p2q0634hcn245ghlkwjlkvnzpq-python2.7-ipykernel-4.3.0/lib/python2.7/site-packages/ipykernel/resources
  octave     /home/j/.local/share/jupyter/kernels/octave


/nix/store/g1i1wwbjf81qn6758wnxm126cipnqf4x-python-2.7.11/bin/python: No module named octave_kernel