diff --git a/src/sage/misc/package.py b/src/sage/misc/package.py
index 3bca15d53b..7cf04ff8d1 100644
--- a/src/sage/misc/package.py
+++ b/src/sage/misc/package.py
@@ -478,16 +478,16 @@ def package_manifest(package):
 
     EXAMPLES::
 
-        sage: from sage.misc.package import package_manifest
-        sage: sagetex_manifest = package_manifest('sagetex')
-        sage: sagetex_manifest['package_name'] == 'sagetex'
+        sage: from sage.misc.package import package_manifest # optional - buildsystem
+        sage: sagetex_manifest = package_manifest('sagetex') # optional - buildsystem
+        sage: sagetex_manifest['package_name'] == 'sagetex' # optional - buildsystem
         True
-        sage: 'files' in sagetex_manifest
+        sage: 'files' in sagetex_manifest # optional - buildsystem
         True
 
     Test a nonexistent package::
 
-        sage: package_manifest('dummy-package')
+        sage: package_manifest('dummy-package') # optional - buildsystem
         Traceback (most recent call last):
         ...
         KeyError: 'dummy-package'