armadillo: correct dependencies

- Remove unused dependencies atlas/blas
- Add hdf5/superlu dependency (As superlu needs openblasCompat, we also use it here.)
- Add support for darwin
- Make use of OpenBLAS-LAPACK in armadillo

OpenBLAS (confusingly) contains LAPACK already by default, so we simply use OpenBLAS when searching for LAPACK.
The better solution would be for armadillo to use cmake built in FindBLAS/FindLAPACK which both would find OpenBLAS.

pkgs/development/libraries/armadillo/default.nix

@@ -1,23 +1,26 @@
-{stdenv, fetchurl, cmake, pkgconfig, atlas, blas, openblas}:
+{ stdenv, fetchurl, cmake, openblasCompat, superlu, hdf5 }:
 
 stdenv.mkDerivation rec {
-  version = "7.200.1b";
+  version = "7.200.2";
   name = "armadillo-${version}";
 
   src = fetchurl {
-    url = "http://sourceforge.net/projects/arma/files/armadillo-${version}.tar.xz";
-    sha256 = "00s8xrywc4aipipq1zpd6q9gzqmsiv8cwd25zvb1csrpninmidvc";
+    url = "mirror://sourceforge/arma/armadillo-${version}.tar.xz";
+    sha256 = "1yvx75caks477jqwx5gspi6946jialddk00wdvg6dnh5wdi2xasm";
   };
 
-  unpackCmd = [ "tar -xf ${src}" ];
+  buildInputs = [ cmake openblasCompat superlu hdf5 ];
 
-  nativeBuildInputs = [ cmake atlas blas openblas ];
+  cmakeFlags = [ "-DDETECT_HDF5=ON" ];
+
+  patches = [ ./use-unix-config-on-OS-X.patch
+              ./use-OpenBLAS-as-LAPACK.patch ];
   
   meta = with stdenv.lib; {
     description = "C++ linear algebra library";
-    homepage = "http://arma.sourceforge.net" ;
+    homepage = http://arma.sourceforge.net;
     license = licenses.mpl20;
-    platforms = stdenv.lib.platforms.linux ;
-    maintainers = [ stdenv.lib.maintainers.juliendehos ];
+    platforms = platforms.unix;
+    maintainers = [ maintainers.juliendehos ];
   };
 }

pkgs/development/libraries/armadillo/use-OpenBLAS-as-LAPACK.patch

@@ -0,0 +1,14 @@
+diff --git a/cmake_aux/Modules/ARMA_FindLAPACK.cmake b/cmake_aux/Modules/ARMA_FindLAPACK.cmake
+index 5395afb..a203c93 100644
+--- a/cmake_aux/Modules/ARMA_FindLAPACK.cmake
++++ b/cmake_aux/Modules/ARMA_FindLAPACK.cmake
+@@ -5,7 +5,7 @@
+ # also defined, but not for general use are
+ #  LAPACK_LIBRARY, where to find the LAPACK library.
+ 
+-SET(LAPACK_NAMES ${LAPACK_NAMES} lapack)
++SET(LAPACK_NAMES ${LAPACK_NAMES} openblas)
+ FIND_LIBRARY(LAPACK_LIBRARY
+   NAMES ${LAPACK_NAMES}
+   PATHS /usr/lib64/atlas /usr/lib/atlas /usr/lib64 /usr/lib /usr/local/lib64 /usr/local/lib
+

pkgs/development/libraries/armadillo/use-unix-config-on-OS-X.patch

@@ -0,0 +1,11 @@
+--- a/CMakeLists.txt
++++ b/CMakeLists.txt
+@@ -84,7 +84,7 @@ message(STATUS "DETECT_HDF5                = ${DETECT_HDF5}"               )
+ ##
+ ## Find LAPACK and BLAS libraries, or their optimised versions
+ ##
+-
++set(APPLE false)
+ if(APPLE)
+   
+   set(ARMA_OS macos)