Unit test fixes

var/spack/repos/builtin/packages/essl/package.py

@@ -30,9 +30,6 @@ class Essl(Package):
 
     homepage = "https://www.ibm.com/systems/power/software/essl/"
 
-    version('6.1')
-    version('5.5')
-
     variant('ilp64', default=False, description='64 bit integers')
     variant(
         'threads', default='openmp',

var/spack/repos/builtin/packages/opengl/package.py

@@ -30,11 +30,6 @@ class Opengl(Package):
 
     homepage = "https://www.opengl.org/"
 
-    # A second argument (usually the hash) must be supplied to the
-    # version directive, but 'n/a' is used here because this package
-    # is a placeholder for a system/vendor installation of OpenGL
-    version('3.2', 'n/a')
-
     provides('gl@:4.5', when='@4.5:')
     provides('gl@:4.4', when='@4.4:')
     provides('gl@:4.3', when='@4.3:')

var/spack/repos/builtin/packages/openglu/package.py

@@ -31,11 +31,6 @@ class Openglu(Package):
 
     homepage = "https://www.opengl.org/resources/libraries"
 
-    # A second argument (usually the has) must be supplied to the
-    # version directive, but 'n/a' is used here because this package
-    # is a placeholder for a system/vendor installation of OpenGL
-    version('1.3', 'n/a')
-
     provides('glu@:1.3', when='@1.3:')
     provides('glu@:1.2', when='@1.2:')
     provides('glu@:1.1', when='@1.1:')

var/spack/repos/builtin/packages/typhon/package.py

@@ -32,6 +32,7 @@ class Typhon(CMakePackage):
     """
 
     homepage = "https://github.com/UK-MAC/Typhon"
+    url      = "https://github.com/UK-MAC/Typhon/archive/v3.0.tar.gz"
     git      = "https://github.com/UK-MAC/Typhon.git"
 
     version('develop', branch='develop')