Python environment!

all-envs.nix

{ pkgs ? import <nixpkgs> {}
, extraPkgs ? "" 
, extraPaths ? ""}:
let
  python-env = import ./envs/python-env.nix {
    inherit pkgs;
  };

  split = str: builtins.filter (s: builtins.stringLength s > 0) (pkgs.lib.splitString "," str);
in
{
  env-python = python-env.override {
    extraPkgs = split extraPkgs;
    extraPaths = split extraPaths;
  };
}

python-env.nix

{ pkgs ? (import <nixpkgs> {}) }:
with pkgs;

let
  vim-vdebug = vimUtils.buildVimPlugin {
    name = "vim-vdebug";
    version = "2018-11-30T17:38:29+01:00";
    src = fetchFromGitHub {
      owner = "vim-vdebug";
      repo = "vdebug";
      rev = "903305f8e7895cddf838639e9280fb73568cfe69";
      sha256 = "17dw9ckq2jkjfvibsnsbznywk7i151pqglphvkvdsxd929l5l6z9";
    };
  };

  extras = {
    inherit vim-vdebug;
  };

  nvim-base = import ../neovim.nix pkgs;

  nvim = nvim-base {
    knownPlugins = extras;
    pluginDictionaries = [
      { name = "vim-vdebug"; }
    ];
  };

  pydbgp = callPackage ../pkgs/pydbgp.nix {
    inherit stdenv fetchFromGitHub;
    inherit (python36Packages) buildPythonPackage;
  };

  basePips = ps: with ps; [
    pydbgp
    python-language-server
    pyls-mypy
    flake8
#    pylint
  ];

  envFun = {extraPkgs ? [], extraPaths ? []}:
  let
    pypkgs = ps: (basePips ps)
      ++ (builtins.map (p: builtins.getAttr p ps) extraPkgs)
      ++ (builtins.map (p: callPackage {}) extraPaths);

  in stdenv.mkDerivation rec {
    name = "env-python";
    ENV_NAME = name;

    shellHook = ''
        export SHELL=${fish}/bin/fish
    '';

    buildInputs = [
      cowsay
      nvim
      fish
      (python36.withPackages pypkgs)
    ];
  };

in lib.makeOverridable envFun {}