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diff --git a/var/spack/repos/builtin/packages/openglu/package.py b/var/spack/repos/builtin/packages/openglu/package.py
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+++ b/var/spack/repos/builtin/packages/openglu/package.py
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+# Copyright 2013-2018 Lawrence Livermore National Security, LLC and other
+# Spack Project Developers. See the top-level COPYRIGHT file for details.
+#
+# SPDX-License-Identifier: (Apache-2.0 OR MIT)
+
+from spack import *
+
+
+class Openglu(Package):
+    """Placeholder for external OpenGL utility library (GLU) from hardware
+       vendors"""
+
+    homepage = "https://www.opengl.org/resources/libraries"
+
+    provides('glu@:1.3', when='@1.3:')
+    provides('glu@:1.2', when='@1.2:')
+    provides('glu@:1.1', when='@1.1:')
+    provides('glu@:1.0', when='@1.0:')
+
+    # Override the fetcher method to throw a useful error message;
+    # fixes an issue similar to Github issue (#7061), in which the
+    # opengl package threw a generic, uninformative error message
+    # during the `fetch` step
+    @property
+    def fetcher(self):
+        msg = """This package is intended to be a placeholder for
+        system-provided OpenGL utility (GLU) libraries from hardware vendors.
+        Please download and install the GLU drivers/libraries for your
+        graphics hardware separately, and then set that up as an external
+        package.  An example of a working packages.yaml:
+
+        packages:
+          openglu:
+            paths:
+              openglu@1.3: /opt/opengl
+            buildable: False
+
+        In that case, /opt/opengl/ should contain these two folders:
+
+        include/GL/       (opengl headers, including "glu.h")
+        lib               (opengl libraries, including "libGLU.so")
+
+        On Apple Darwin (OS X, macOS) systems, this package is
+        normally installed as part of the XCode Command Line Tools in
+        /usr/X11R6, so a working packages.yaml would be
+
+        packages:
+          openglu:
+            paths:
+              openglu@1.3: /usr/X11R6
+            buildable: False
+
+        In that case, /usr/X11R6 should contain
+
+        include/GL       (GLU headers, including "glu.h")
+        lib              (GLU libraries, including "libGLU.dylib")"""
+
+        raise InstallError(msg)
+
+    @property
+    def libs(self):
+        for dir in ['lib64', 'lib']:
+            libs = find_libraries('libGLU', join_path(self.prefix, dir),
+                                  shared=True, recursive=False)
+            if libs:
+                return libs