feat.nix

let
  pkgs = import <nixos-unstable> {};
  stdenv = pkgs.gcc10Stdenv;

  eigency = pkgs.python38Packages.buildPythonPackage rec {
    pname = "eigency";
    version = "1.77" ;

    src = pkgs.python38Packages.fetchPypi {
      inherit pname version;
      sha256 = "13cf96e00020fd900aa5f8905036488afd27c89212bfc07b60ac5412073ea7d7";
    };

    doCheck = false;

    # build time deps
    nativeBuildInputs = with pkgs.python38Packages; [
      cython
      setuptools
      setuptools_scm
    ];

    ## runtime deps
    propagatedBuildInputs = with pkgs; [
      python38Packages.numpy
      eigen
    ];

    meta = with pkgs.stdlib; {
      homepage = "https://pypi.org/project/eigency";
    };
  };
in
  pkgs.python38Packages.toPythonModule (stdenv.mkDerivation rec {
    pname = "feat";
    version = "0.4";

    nativeBuildInputs = with pkgs; [ 
      cmake 
      autoPatchelfHook 
      (python38.withPackages( ps: with ps; [ cython setuptools setuptools_scm ])) 
    ];

    buildInputs = with pkgs; [ 
      eigen shogun eigency 
    ];

    enablePython = true;

    CFLAGS = "-march=znver2 -O3";

    src = pkgs.fetchFromGitHub {
      owner = "lacava"; 
      repo = "feat";
      rev = "b778a44ae64deeb4a5d7c652ba593154f117ef6e";
      sha256 = "1y16dwdy1cx7xxg5j90rzj1jyf4ccri8xrw5lsnx0krdap5a7fz7";
    };

    installPhase = ''
      mkdir -p $out/bin
      install -m755 -D feat $out/bin/feat
      install -m755 -D libfeat_lib.so $out/bin/libfeat_lib.so
    '';

     # This is how the Python bindings should be built
     # cd ../python
     # python setup.py install --home=$out

    meta = with stdenv.lib; {
      description = "A feature engineering automation tool for learning data representations";
      homepage = "https://github.com/lacava/feat";
      license = stdenv.lib.licenses.gpl3;
      platforms = stdenv.lib.platforms.linux;
    };
  })