ipopt: build with openblas

pkgs/development/libraries/science/math/ipopt/default.nix

···
-{ stdenv, fetchurl, unzip, blas, liblapack, gfortran }:
+{ stdenv, fetchurl, unzip, openblas, gfortran }:
 
 stdenv.mkDerivation rec {
   version = "3.12.3";
···
      export CXXDEFS="-DHAVE_RAND -DHAVE_CSTRING -DHAVE_CSTDIO"
   '';
 
+  configureFlags = [
+    "--with-blas-lib=-lopenblas"
+    "--with-lapack-lib=-lopenblas"
+  ];
+
   nativeBuildInputs = [ unzip ];
 
-  buildInputs = [ gfortran blas liblapack ];
+  buildInputs = [ gfortran openblas ];
 
   enableParallelBuilding = true;
 

pkgs/top-level/all-packages.nix

···
   suitesparse_4_4 = callPackage ../development/libraries/science/math/suitesparse {};
   suitesparse = suitesparse_4_4;
 
-  ipopt = callPackage ../development/libraries/science/math/ipopt { };
+  ipopt = callPackage ../development/libraries/science/math/ipopt { openblas = openblasCompat; };
 
   ### SCIENCE/MOLECULAR-DYNAMICS