libvips need imagemagick as a dependency, shows up when compiling in a X11 vnc...

libvips need imagemagick as a dependency, shows up when compiling in a X11 vnc session with another imagemagik loaded

packages/libvips/package.py

@@ -50,4 +50,5 @@ class Libvips(AutotoolsPackage):
     depends_on("cfitsio")
     depends_on("pango")
     depends_on("libtiff")
+    depends_on("imagemagick")
     # end EBRAINS