with import <nixpkgs> {};

let

  sowing   = import ./sowing.nix;
  metis    = import ./metis.nix;
  parmetis = import ./parmetis.nix;
  hypre    = import ./hypre.nix;
  exodus   = import ./exodus.nix;

in

  stdenv.mkDerivation rec {
    version = "156a1856fd44f55220132393778f0fda1e6096e3";
    name = "firedrake-petsc-${version}";

    src = fetchFromGitHub {
      owner = "firedrakeproject";
      repo = "petsc";
      rev = "${version}";
      sha256 = "1fmkd818idbiwbr6q9bmsxgwsc7igk13amfvb160llvsj32i93s9";
    };

    buildInputs = [
      sowing
      metis
      parmetis
      hypre
      exodus
      python27
      gfortran
      openmpi
      blas
      liblapack
      hdf5
      netcdf
      eigen
    ];

    postPatch = "patchShebangs .";

    configureFlags = [
      "--with-sowing-dir=${sowing}"
      "--with-hdf5-dir=${hdf5}"
      "--with-netcdf-dir=${netcdf}"
      "--with-metis-dir=${metis}"
      "--with-parmetis-dir=${parmetis}"
      "--with-hypre-dir=${hypre}"
      "--with-exodusii-dir=${exodus}"
      "--with-eign-dir=${eigen}"
      "--with-64-bit-indices"
    ];

    setupHook = writeText "setupHook.sh" "export PETSC_DIR=@out@";

    meta = {
      homepage = "https://github.com/firedrakeproject/petsc";
      description = "A suite of data structures and routines for the scalable (parallel) solution of scientific applications modeled by partial differential equations.";
      license = licenses.bsd2;
    };
  }