treewide: cmake buildInputs to nativeBuildInputs, minor cleanups

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

@@ -35,8 +35,8 @@ stdenv.mkDerivation rec {
      "-DBUILD_TEST=OFF"
   ];
 
+  nativeBuildInputs = [ cmake ];
   buildInputs = [
-    cmake
     gfortran
     blas
     python
@@ -53,8 +53,6 @@ stdenv.mkDerivation rec {
     OpenCL
   ];
 
-  enableParallelBuilding = true;
-
   meta = with stdenv.lib; {
     homepage = "https://github.com/clMathLibraries/clBLAS";
     description = "A software library containing BLAS functions written in OpenCL";