python3.6 build

flake.nix

{
  description = "python3.6";

  inputs = {
    nixpkgs.url = "nixpkgs/nixos-22.11";
  };
  outputs = { self, nixpkgs }:
    let
      python36 = ((nixpkgs.legacyPackages.x86_64-linux.python3.override {
        sourceVersion = {major = "3"; minor = "6" ; patch = "15"; suffix = ""; };
      }).override {
        sha256 = "14ax2ca7c8hs7zpz5k4ha12wy3z2f8wwm6z4j38kslfxsv6xfa3f";
      }).withPackages (p: with p; [toolz]);
    in
    {
      packages.x86_64-linux.py36 =  python36;
      packages.x86_64-linux.default = self.packages.x86_64-linux.py36;

    };
}