qhull: specify spdx license

lib/licenses.nix

@@ -613,6 +613,11 @@ lib.mapAttrs (n: v: v // { shortName = n; }) {
     url = https://enterprise.dejacode.com/licenses/public/purdue-bsd;
   };
 
+  qhull = spdx {
+    spdxId = "Qhull";
+    fullName = "Qhull License";
+  };
+
   qpl = spdx {
     spdxId = "QPL-1.0";
     fullName = "Q Public License 1.0";

pkgs/development/libraries/qhull/default.nix

@@ -15,7 +15,7 @@ stdenv.mkDerivation {
   meta = with stdenv.lib; {
     homepage = http://www.qhull.org/;
     description = "Compute the convex hull, Delaunay triangulation, Voronoi diagram and more";
-    license = licenses.free;
+    license = licenses.qhull;
     platforms = platforms.unix;
     maintainers = with maintainers; [ orivej ];
   };