src/sage/interfaces/all.py: Use try-except for importing maxima, not lazy_import

Author: Matthias Koeppe

src/sage/interfaces/all.py

@@ -4,11 +4,11 @@
 from .gap import gap, gap_reset_workspace, Gap
 from .gp import gp, gp_version, Gp
 # import problems
-# from maxima_lib import maxima_lib
-# from .maxima import maxima, Maxima
-from sage.misc.lazy_import import lazy_import
-
-lazy_import('sage.interfaces.maxima', ['maxima', 'Maxima'])
+try:
+    # from maxima_lib import maxima_lib
+    from .maxima import maxima, Maxima
+except ImportError:
+    pass
 
 from .singular import singular, singular_version, Singular