why unable to call giac as integrate method in version 9.4?

edit

I just installed sagemath binary, latest stable version 9.4 on my Linux VBox. I normally install sagemath using the Linux Manjaro package manager, but it only see 9.3 now. That is why I downloaded the binary from https://www.sagemath.org/download-lin... (downloaded the 64 bit version).

Uninstalled 9.3 from my box.

Now I started to use sage 9.4 binary, and set the path, and started it. Everything looks OK. I am able to use fricas and maxima integrate, but can no longer use giac. Even though all of these are installed on same Linux I am using, and I was able to use giac from 9.3. But not from 9.4. Here is a MWE

I noticed the binary sagemath is using its own version of giac, in /home/me/SageMath/local/bin/giac and not the one I have already installed in my Linux which is in /bin/giac and these are different versions. The one in /bin/giac is 1.7 and the one shipped with sagemath binary is older, 1.6.

How to tell sagemath to use my own version of giac on /bin/giac and not the one that comes with sagemath binary? May be this will fix this problem:

>which giac
/bin/giac
>giac --version
// Using locale /usr/share/locale/
// en_US.utf8
// /usr/share/locale/
// giac
// UTF-8
// Maximum number of parallel threads 2
// (c) 2001, 2021 B. Parisse & others
1.7.0
>
>
>sage 
┌────────────────────────────────────────────────────────────────────┐
│ SageMath version 9.4, Release Date: 2021-08-22                     │
│ Using Python 3.9.5. Type "help()" for help.                        │
└────────────────────────────────────────────────────────────────────┘

sage: var('x')                                                                                                                                              
x

sage: integrate(x,x, algorithm="fricas")                                                                                                                    
1/2*x^2

sage: integrate(x,x, algorithm="maxima")                                                                                                                    
1/2*x^2

sage: integrate(x,x, algorithm="giac")                                                                                                                      
---------------------------------------------------------------------------
EOF                                       Traceback (most recent call last)
~/SageMath/local/lib/python3.9/site-packages/sage/interfaces/expect.py in _start(self, alt_message, block_during_init)
    515         try:
--> 516             self._expect.expect(self._prompt)
    517         except (pexpect.TIMEOUT, pexpect.EOF) as msg:

~/SageMath/local/lib/python3.9/site-packages/pexpect/spawnbase.py in expect(self, pattern, timeout, searchwindowsize, async_, **kw)
    342         compiled_pattern_list = self.compile_pattern_list(pattern)
--> 343         return self.expect_list(compiled_pattern_list,
    344                 timeout, searchwindowsize, async_)

~/SageMath/local/lib/python3.9/site-packages/pexpect/spawnbase.py in expect_list(self, pattern_list, timeout, searchwindowsize, async_, **kw)
    371         else:
--> 372             return exp.expect_loop(timeout)
    373 

~/SageMath/local/lib/python3.9/site-packages/pexpect/expect.py in expect_loop(self, timeout)
    178         except EOF as e:
--> 179             return self.eof(e)
    180         except TIMEOUT as e:

~/SageMath/local/lib/python3.9/site-packages/pexpect/expect.py in eof(self, err)
    121             exc.__cause__ = None # in Python 3.x we can use "raise exc from None"
--> 122             raise exc
    123 

EOF: End Of File (EOF). Exception style platform.
Giac with PID 2855 running /home/me/SageMath/local/bin/giac --sage
command: /home/me/SageMath/local/bin/giac
args: ['/home/me/SageMath/local/bin/giac', '--sage']
buffer (last 100 chars): b''
before (last 100 chars): b'// Maximum number of parallel threads 2\r\nWarning adding 1 ) at end of input\r\n'
after: <class 'pexpect.exceptions.EOF'>
match: None
match_index: None
exitstatus: None
flag_eof: True
pid: 2855
child_fd: 18
closed: False
timeout: None
delimiter: <class 'pexpect.exceptions.EOF'>
logfile: None
logfile_read: None
logfile_send: None
maxread: 4194304
ignorecase: False
searchwindowsize: None
delaybeforesend: None
delayafterclose: 0.1
delayafterterminate: 0.1
searcher: searcher_re:
    0: re.compile(b'[0-9]*>> ')

During handling of the above exception, another exception occurred:

RuntimeError                              Traceback (most recent call last)
~/SageMath/local/lib/python3.9/site-packages/sage/interfaces/expect.py in __init__(self, parent, value, is_name, name)
   1468             try:
-> 1469                 self._name = parent._create(value, name=name)
   1470             # Convert ValueError and RuntimeError to TypeError for

~/SageMath/local/lib/python3.9/site-packages/sage/interfaces/interface.py in _create(self, value, name)
    512         name = self._next_var_name() if name is None else name
--> 513         self.set(name, value)
    514         return name

~/SageMath/local/lib/python3.9/site-packages/sage/interfaces/giac.py in set(self, var, value)
    665         cmd = '%s:=%s:;'%(var,value)   #if giac is not in maple mode ( maple_mode(0))
--> 666         out = self.eval(cmd)
    667         if out.find("error") != -1:

~/SageMath/local/lib/python3.9/site-packages/sage/interfaces/giac.py in eval(self, code, strip, **kwds)
    649              code = code.replace("\n","").strip()
--> 650         ans = Expect.eval(self, code, strip=strip, **kwds).strip()
    651         return ans

~/SageMath/local/lib/python3.9/site-packages/sage/interfaces/expect.py in eval(self, code, strip, synchronize, locals, allow_use_file, split_lines, **kwds)
   1380                 elif split_lines:
-> 1381                     return '\n'.join([self._eval_line(L, allow_use_file=allow_use_file, **kwds)
   1382                                         for L in code.split('\n') if L != ''])

~/SageMath/local/lib/python3.9/site-packages/sage/interfaces/expect.py in <listcomp>(.0)
   1380                 elif split_lines:
-> 1381                     return '\n'.join([self._eval_line(L, allow_use_file=allow_use_file, **kwds)
   1382                                         for L in code.split('\n') if L != ''])

~/SageMath/local/lib/python3.9/site-packages/sage/interfaces/giac.py in _eval_line(self, line, allow_use_file, wait_for_prompt, restart_if_needed)
    615         with gc_disabled():
--> 616             z = Expect._eval_line(self, line, allow_use_file=allow_use_file,
    617                     wait_for_prompt=wait_for_prompt)

~/SageMath/local/lib/python3.9/site-packages/sage/interfaces/expect.py in _eval_line(self, line, allow_use_file, wait_for_prompt, restart_if_needed)
    946             if self._expect is None:
--> 947                 self._start()
    948             E = self._expect

~/SageMath/local/lib/python3.9/site-packages/sage/interfaces/expect.py in _start(self, alt_message, block_during_init)
    519             self._session_number = BAD_SESSION
--> 520             raise RuntimeError("unable to start %s: %s" % (self.name(), msg))
    521         self._expect.timeout = None

RuntimeError: unable to start giac: End Of File (EOF). Exception style platform.
Giac with PID 2855 running /home/me/SageMath/local/bin/giac --sage
command: /home/me/SageMath/local/bin/giac
args: ['/home/me/SageMath/local/bin/giac', '--sage']
buffer (last 100 chars): b''
before (last 100 chars): b'// Maximum number of parallel threads 2\r\nWarning adding 1 ) at end of input\r\n'
after: <class 'pexpect.exceptions.EOF'>
match: None
match_index: None
exitstatus: None
flag_eof: True
pid: 2855
child_fd: 18
closed: False
timeout: None
delimiter: <class 'pexpect.exceptions.EOF'>
logfile: None
logfile_read: None
logfile_send: None
maxread: 4194304
ignorecase: False
searchwindowsize: None
delaybeforesend: None
delayafterclose: 0.1
delayafterterminate: 0.1
searcher: searcher_re:
    0: re.compile(b'[0-9]*>> ')

During handling of the above exception, another exception occurred:

TypeError                                 Traceback (most recent call last)
<ipython-input-6-a1b9d44d17fa> in <module>
----> 1 integrate(x,x, algorithm="giac")

~/SageMath/local/lib/python3.9/site-packages/sage/misc/functional.py in integral(x, *args, **kwds)
    757     """
    758     if hasattr(x, 'integral'):
--> 759         return x.integral(*args, **kwds)
    760     else:
    761         from sage.symbolic.ring import SR

~/SageMath/local/lib/python3.9/site-packages/sage/symbolic/expression.pyx in sage.symbolic.expression.Expression.integral (build/cythonized/sage/symbolic/expression.cpp:67294)()
  12749                     R = SR
  12750             return R(integral(f, v, a, b, **kwds))
> 12751         return integral(self, *args, **kwds)
  12752 
  12753     integrate = integral

~/SageMath/local/lib/python3.9/site-packages/sage/symbolic/integration/integral.py in integrate(expression, v, a, b, algorithm, hold)
   1008         if not integrator:
   1009             raise ValueError("Unknown algorithm: %s" % algorithm)
-> 1010         return integrator(expression, v, a, b)
   1011     if a is None:
   1012         return indefinite_integral(expression, v, hold=hold)

~/SageMath/local/lib/python3.9/site-packages/sage/symbolic/integration/external.py in giac_integrator(expression, v, a, b)
    243         sin(π)
    244     """
--> 245     ex = expression._giac_()
    246     if a is None:
    247         result = ex.integrate(v._giac_())

~/SageMath/local/lib/python3.9/site-packages/sage/structure/sage_object.pyx in sage.structure.sage_object.SageObject._giac_ (build/cythonized/sage/structure/sage_object.c:7913)()
    778             import sage.interfaces.giac
    779             G = sage.interfaces.giac.giac
--> 780         return self._interface_(G)
    781 
    782     def _giac_init_(self):

~/SageMath/local/lib/python3.9/site-packages/sage/symbolic/expression.pyx in sage.symbolic.expression.Expression._interface_ (build/cythonized/sage/symbolic/expression.cpp:7985)()
   1018         if is_a_constant(self._gobj):
   1019             return self.pyobject()._interface_(I)
-> 1020         return super(Expression, self)._interface_(I)
   1021 
   1022     def _maxima_(self, session=None):

~/SageMath/local/lib/python3.9/site-packages/sage/structure/sage_object.pyx in sage.structure.sage_object.SageObject._interface_ (build/cythonized/sage/structure/sage_object.c:5759)()
    690             except Exception:
    691                 raise NotImplementedError("coercion of object %s to %s not implemented:\n%s\n%s" % (repr(self), I))
--> 692         X = I(s)
    693         if c:
    694             try:

~/SageMath/local/lib/python3.9/site-packages/sage/interfaces/interface.py in __call__(self, x, name)
    293 
    294         if isinstance(x, str):
--> 295             return cls(self, x, name=name)
    296         try:
    297             # Special methods do not and should not have an option to

~/SageMath/local/lib/python3.9/site-packages/sage/interfaces/expect.py in __init__(self, parent, value, is_name, name)
   1472             except (RuntimeError, ValueError) as x:
   1473                 self._session_number = -1
-> 1474                 raise TypeError(*x.args)
   1475             except BaseException:
   1476                 self._session_number = -1

TypeError: unable to start giac: End Of File (EOF). Exception style platform.
Giac with PID 2855 running /home/me/SageMath/local/bin/giac --sage
command: /home/me/SageMath/local/bin/giac
args: ['/home/me/SageMath/local/bin/giac', '--sage']
buffer (last 100 chars): b''
before (last 100 chars): b'// Maximum number of parallel threads 2\r\nWarning adding 1 ) at end of input\r\n'
after: <class 'pexpect.exceptions.EOF'>
match: None
match_index: None
exitstatus: None
flag_eof: True
pid: 2855
child_fd: 18
closed: False
timeout: None
delimiter: <class 'pexpect.exceptions.EOF'>
logfile: None
logfile_read: None
logfile_send: None
maxread: 4194304
ignorecase: False
searchwindowsize: None
delaybeforesend: None
delayafterclose: 0.1
delayafterterminate: 0.1
searcher: searcher_re:
    0: re.compile(b'[0-9]*>> ')
sage:

I can only use stable releases and 9.4 is the latest stable release.

My Linux us

>cat /etc/os-release
 NAME="Manjaro Linux"
 ID=manjaro
 ID_LIKE=arch
 BUILD_ID=rolling
 PRETTY_NAME="Manjaro Linux"
 ANSI_COLOR="32;1;24;144;200"
 HOME_URL="https://manjaro.org/"
 DOCUMENTATION_URL="https://wiki.manjaro.org/"
 SUPPORT_URL="https://manjaro.org/"
 BUG_REPORT_URL="https://bugs.manjaro.org/"
 LOGO=manjarolinux
 >lsb_release -a
 shell-init: error retrieving current directory: getcwd: cannot access
 parent directories: No such file or directory
 LSB Version:    n/a
 Distributor ID: ManjaroLinux
 Description:    Manjaro Linux
 Release:        21.0.4
 Codename:       Ornara

 }}}

Any one else see this problem and how to correct it?