default.nix

{ fetchurl, stdenv, ocaml, makeWrapper, ncurses }:

let version = "0.92"; in
stdenv.mkDerivation rec {
  name = "megam-${version}";

  src = fetchurl {
    url = "http://hal3.name/megam/megam_src.tgz";
    sha256 = "dc0e9f59ff8513449fe3bd40b260141f89c88a4edf6ddc8b8a394c758e49724e";
  };

  patches = [ ./ocaml-3.12.patch ];
  
  buildInputs = [ ocaml ncurses ];

  nativeBuildInputs = [ makeWrapper ];

  # FIXME: don't want hardcoded ocaml path, but I suppose somehow coming
  # out of the ocaml var instead
  makeFlags = "CAML_INCLUDES=/nix/store/7rhrr4j9jhbwx2gjjx2hd7nmv1b19m6h-ocaml-3.12.1/lib/ocaml/caml";

  # see https://bugzilla.redhat.com/show_bug.cgi?id=435559
  dontStrip = true;

  installPhase = ''
    mkdir -pv $out/bin
    cp -Rv megam $out/bin
  '';


  meta = {
    description = "MEGA Model Optimization Package";

    longDescription =
      ''  The software here is an implementation of maximum likelihood
          and maximum a posterior optimization of the parameters of
          these models.  The algorithms used are much more efficient
          than the iterative scaling techniques used in almost every
          other maxent package out there.  '';

    homepage = http://www.umiacs.umd.edu/~hal/megam;

    license = "non-commercial";

    maintainers = [ ];
    platforms = stdenv.lib.platforms.gnu;  # arbitrary choice
  };
}

ocaml-3.12.patch

{ fetchurl, stdenv, ocaml, makeWrapper, ncurses }:

let version = "0.92"; in
stdenv.mkDerivation rec {
  name = "megam-${version}";

  src = fetchurl {
    url = "http://hal3.name/megam/megam_src.tgz";
    sha256 = "dc0e9f59ff8513449fe3bd40b260141f89c88a4edf6ddc8b8a394c758e49724e";
  };

  patches = [ ./ocaml-3.12.patch ];
  
  buildInputs = [ ocaml ncurses ];

  nativeBuildInputs = [ makeWrapper ];

  # FIXME: don't want hardcoded ocaml path, but I suppose somehow coming
  # out of the ocaml var instead
  makeFlags = "CAML_INCLUDES=/nix/store/7rhrr4j9jhbwx2gjjx2hd7nmv1b19m6h-ocaml-3.12.1/lib/ocaml/caml";

  # see https://bugzilla.redhat.com/show_bug.cgi?id=435559
  dontStrip = true;

  installPhase = ''
    mkdir -pv $out/bin
    cp -Rv megam $out/bin
  '';


  meta = {
    description = "MEGA Model Optimization Package";

    longDescription =
      ''  The software here is an implementation of maximum likelihood
          and maximum a posterior optimization of the parameters of
          these models.  The algorithms used are much more efficient
          than the iterative scaling techniques used in almost every
          other maxent package out there.  '';

    homepage = http://www.umiacs.umd.edu/~hal/megam;

    license = "non-commercial";

    maintainers = [ ];
    platforms = stdenv.lib.platforms.gnu;  # arbitrary choice
  };
}