Merge #32593

Author: Matthias Koeppe

src/sage/matrix/matrix2.pyx

@@ -94,7 +94,6 @@ from sage.rings.complex_double import CDF
 from sage.rings.real_mpfr import RealField
 from sage.rings.complex_mpfr import ComplexField
 from sage.rings.finite_rings.integer_mod_ring import IntegerModRing
-from sage.misc.derivative import multi_derivative
 import sage.rings.abc
 from sage.arith.numerical_approx cimport digits_to_bits
 from copy import copy
@@ -15124,6 +15123,7 @@ cdef class Matrix(Matrix1):
             sage: v.derivative(x,x)
             (0, 0, 2)
         """
+        from sage.misc.derivative import multi_derivative
         return multi_derivative(self, args)
 
     def exp(self):

src/sage/modules/free_module_element.pyx

@@ -123,7 +123,6 @@ from sage.rings.infinity import Infinity, AnInfinity
 from sage.rings.integer_ring import ZZ
 from sage.rings.real_double import RDF
 from sage.rings.complex_double import CDF
-from sage.misc.derivative import multi_derivative
 
 from sage.rings.ring cimport Ring
 from sage.rings.integer cimport Integer, smallInteger
@@ -3968,6 +3967,7 @@ cdef class FreeModuleElement(Vector):   # abstract base class
             sage: v.derivative(x,x)
             (0, 0, 2)
         """
+        from sage.misc.derivative import multi_derivative
         return multi_derivative(self, args)
 
     diff = derivative

src/sage/modules/vector_space_morphism.py

@@ -688,8 +688,10 @@ def linear_transformation(arg0, arg1=None, arg2=None, side='left'):
     from sage.modules.module import is_VectorSpace
     from sage.modules.free_module import VectorSpace
     from sage.categories.homset import Hom
-    from sage.symbolic.ring import SR
-    from sage.modules.vector_callable_symbolic_dense import Vector_callable_symbolic_dense
+    try:
+        from sage.modules.vector_callable_symbolic_dense import Vector_callable_symbolic_dense
+    except ImportError:
+        Vector_callable_symbolic_dense = ()
 
     if not side in ['left', 'right']:
         raise ValueError("side must be 'left' or 'right', not {0}".format(side))
@@ -734,6 +736,7 @@ def linear_transformation(arg0, arg1=None, arg2=None, side='left'):
     elif isinstance(arg2, (list, tuple)):
         pass
     elif isinstance(arg2, Vector_callable_symbolic_dense):
+        from sage.symbolic.ring import SR
         args = arg2.parent().base_ring()._arguments
         exprs = arg2.change_ring(SR)
         m = len(args)