arpack: use openblas on darwin; fix build; enable eigen (#367594)

{ lib, stdenv, fetchFromGitHub, cmake

{ lib, stdenv, fetchFromGitHub, cmake, ninja

, gfortran, blas, lapack, eigen

, useMpi ? false

, mpi

, openssh

, igraph

, useAccel ? false #use Accelerate framework on darwin

}:

# MPI version can only be built with LP64 interface.

# See https://github.com/opencollab/arpack-ng#readme

assert useMpi -> !blas.isILP64;

assert useAccel -> stdenv.hostPlatform.isDarwin;

stdenv.mkDerivation rec {

  pname = "arpack";

    sha256 = "sha256-HCvapLba8oLqx9I5+KDAU0s/dTmdWOEilS75i4gyfC0=";

  };

  nativeBuildInputs = [ cmake gfortran ];

  buildInputs = assert (blas.isILP64 == lapack.isILP64); [

    blas

    lapack

  nativeBuildInputs = [ cmake gfortran ninja ];

  buildInputs = [

    eigen

  ] ++ lib.optional useMpi mpi;

  ] ++ lib.optionals (!useAccel) (assert (blas.isILP64 == lapack.isILP64); [

    blas lapack

  ]) ++ lib.optional useMpi mpi;

  nativeCheckInputs = lib.optional useMpi openssh;

  # a couple tests fail when run in parallel

  doCheck = true;

  enableParallelChecking = false;

  env = lib.optionalAttrs useAccel {

    # Without these flags some tests will fail / segfault when using Accelerate

    # framework. They were pulled from the CI Workflow

    # https://github.com/opencollab/arpack-ng/blob/804fa3149a0f773064198a8e883bd021832157ca/.github/workflows/jobs.yml#L184-L192

    FFLAGS = "-ff2c -fno-second-underscore";

  };

  cmakeFlags = [

    "-DBUILD_SHARED_LIBS=ON"

    "-DINTERFACE64=${if blas.isILP64 then "1" else "0"}"

    "-DMPI=${if useMpi then "ON" else "OFF"}"

    "-DICB=ON"

    (lib.cmakeBool "BUILD_SHARED_LIBS" stdenv.hostPlatform.hasSharedLibraries)

    (lib.cmakeBool "EIGEN" true)

    (lib.cmakeBool "EXAMPLES" true)

    (lib.cmakeBool "ICB" true)

    (lib.cmakeBool "INTERFACE64" (!useAccel && blas.isILP64))

    (lib.cmakeBool "MPI" useMpi)

  ] ++ lib.optionals stdenv.hostPlatform.isDarwin [

    "-DBLA_VENDOR=${if useAccel then "Apple" else "Generic"}"

  ];

  preCheck = ''

    # Prevent tests from using all cores

    export OMP_NUM_THREADS=2

  '';

  postFixup = lib.optionalString stdenv.hostPlatform.isDarwin ''

    install_name_tool -change libblas.dylib ${blas}/lib/libblas.dylib $out/lib/libarpack.dylib

  '';

  passthru = {

    inherit (blas) isILP64;

    isILP64 = !useAccel && blas.isILP64;

    tests = {

      inherit igraph;

    };