Hi,

It does work with ubuntu sagemath 9.5, but failed with compiled version, any help ?

best

Henri

Doing solve_tour.ipynb  :solve(x^2-x-1 == 0, x)

---------------------------------------------------------------------------
RuntimeError                               Traceback (most recent call last)
CellIn [2], line 1
----> 1  solve(x**Integer(2)-x-Integer(1)==Integer(0),x)

File~/sage/src/sage/symbolic/relation.py:1068, insolve(f, *args, **kwds)
1063          raise  TypeError("The first argument to solve() should be a "
1064                          "symbolic expression or a list of symbolic "
1065                          "expressions.")
1067  if  isinstance(f, Expression):# f is a single expression
-> 1068      return  
_solve_expression(f,x,explicit_solutions,multiplicities,to_poly_solve,solution_dict,algorithm,domain)
1070  if  not  isinstance(f, (list,tuple)):
1071 raise TypeError("The first argument must be a symbolic expression or a list of symbolic expressions.")

File~/sage/src/sage/symbolic/relation.py:1332, in_solve_expression(f, x, explicit_solutions, multiplicities, to_poly_solve, solution_dict, algorithm, domain)
1329      return  _giac_solver(f, x, solution_dict)
1331  # from here on, maxima is used for solution
-> 1332  m=  ex._maxima_()
1333  P=  m.parent()
1334  if  explicit_solutions:

File~/sage/src/sage/symbolic/expression.pyx:1233, 
insage.symbolic.expression.Expression._maxima_()
1231      # Maybe not such a great idea because the "default" interface is 
another one
1232      from sage.calculus.calculus import maxima
-> 1233      return super()._interface_(maxima)
1234  else:
1235      return super()._interface_(session)

File~/sage/src/sage/structure/sage_object.pyx:686, 
insage.structure.sage_object.SageObject._interface_()
684      except (KeyError, ValueError):
685          pass
--> 686  nm = I.name()
687  init_func = getattr(self, '_%s_init_' % nm, None)
688  if init_func is not None:

File~/sage/src/sage/misc/lazy_import.pyx:372, 
insage.misc.lazy_import.LazyImport.__getattr__()
370          True
371      """
--> 372      return getattr(self.get_object(), attr)
373 374 # We need to wrap all the slot methods, as they are not forwarded

File~/sage/src/sage/misc/lazy_import.pyx:225, 
insage.misc.lazy_import.LazyImport.get_object()
223      if likely(self._object is not None):
224          return self._object
--> 225      return self._get_object()
226 227 cpdef _get_object(self):

File~/sage/src/sage/misc/lazy_import.pyx:261, 
insage.misc.lazy_import.LazyImport._get_object()
259 260 try:
--> 261              self._object = getattr(__import__(self._module, {}, {}, 
[self._name]), self._name)
262          except ImportError as e:
263              if self._feature:

File~/sage/src/sage/interfaces/maxima_lib.py:135
133      ecl_eval("(require 'maxima \"{}\")".format(MAXIMA_FAS))
134  else:
--> 135      ecl_eval("(require 'maxima)")
136  ecl_eval("(in-package :maxima)")
137  ecl_eval("(setq $nolabels t))")

File~/sage/src/sage/libs/ecl.pyx:1350, insage.libs.ecl.ecl_eval()
1348 1349 #convenience routine to more easily evaluate strings
-> 1350  cpdef EclObject ecl_eval(str s):
1351      r"""
1352      Read and evaluate string in Lisp and return the result

File~/sage/src/sage/libs/ecl.pyx:1373, insage.libs.ecl.ecl_eval()
1371  """
1372  cdef cl_object o
-> 1373  o=ecl_safe_eval(python_to_ecl(s, True))
1374  return ecl_wrap(o)
1375
File~/sage/src/sage/libs/ecl.pyx:321, insage.libs.ecl.ecl_safe_eval()
319          raise KeyboardInterrupt("ECL says: {}".format(message))
320      else:
--> 321          raise RuntimeError("ECL says: {}".format(message))
322  else:
323      return ret

RuntimeError: ECL says: Module error: Don't know how to REQUIRE MAXIMA.

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