Simple update

etc/nix/scalapack.nix

@@ -0,0 +1,56 @@
+{ lib, stdenv, fetchFromGitHub, cmake, openssh
+, gfortran, mpi, blas, lapack
+} :
+
+assert (!blas.isILP64) && (!lapack.isILP64);
+
+stdenv.mkDerivation rec {
+  pname = "scalapack";
+  version = "2.1.0";
+
+  src = fetchFromGitHub {
+    owner = "Reference-ScaLAPACK";
+    repo = pname;
+    rev = "v${version}";
+    sha256 = "1c10d18gj3kvpmyv5q246x35hjxaqn4ygy1cygaydhyxnm4klzdj";
+  };
+
+  nativeBuildInputs = [ cmake openssh ];
+  buildInputs = [ mpi gfortran blas lapack ];
+
+  doCheck = false;
+
+  preConfigure = ''
+    cmakeFlagsArray+=(
+      -DBUILD_SHARED_LIBS=ON -DBUILD_STATIC_LIBS=ON
+      -DLAPACK_LIBRARIES="-llapack"
+      -DBLAS_LIBRARIES="-lblas"
+      )
+  '';
+
+  # Increase individual test timeout from 1500s to 10000s because hydra's builds
+  # sometimes fail due to this
+  checkFlagsArray = [ "ARGS=--timeout 10000" ];
+
+  preCheck = ''
+    # make sure the test starts even if we have less than 4 cores
+    export OMPI_MCA_rmaps_base_oversubscribe=1
+
+    # Fix to make mpich run in a sandbox
+    export HYDRA_IFACE=lo
+
+    # Run single threaded
+    export OMP_NUM_THREADS=1
+
+    export LD_LIBRARY_PATH=$LD_LIBRARY_PATH''${LD_LIBRARY_PATH:+:}`pwd`/lib
+  '';
+
+  meta = with lib; {
+    homepage = "http://www.netlib.org/scalapack/";
+    description = "Library of high-performance linear algebra routines for parallel distributed memory machines";
+    license = licenses.bsd3;
+    platforms = [ "x86_64-linux" ];
+    maintainers = with maintainers; [ costrouc markuskowa ];
+  };
+
+}