Build failed of psi4 1.9.1 due to qcengine

[topazus]

Describe the bug

Quoted from https://bugzilla.redhat.com/show_bug.cgi?id=2309462

I am trying to update psi4 to version 1.9.1. The problem is that the tests fail due to qcengine:

File "/builddir/build/BUILD/psi4-1.9.1-build/psi4-1.9.1/redhat-linux-build/stage/bin/psi4", line 387, in
exec(content)
~~~~^^^^^^^^^
File "", line 46, in
File "/builddir/build/BUILD/psi4-1.9.1-build/psi4-1.9.1/redhat-linux-build/stage/lib64/python3.13/site-packages/psi4/driver/driver.py", line 463, > in energy
plan.compute()
~~~~~~~~~~~~^^
File "/builddir/build/BUILD/psi4-1.9.1-build/psi4-1.9.1/redhat-linux-build/stage/lib64/python3.13/site-packages/psi4/driver/driver_nbody.py", line > 1020, in compute
t.compute(client=client)
~~~~~~~~~^^^^^^^^^^^^^^^
File "/builddir/build/BUILD/psi4-1.9.1-build/psi4-1.9.1/redhat-linux-build/stage/lib64/python3.13/site-packages/psi4/driver/task_base.py", line > 179, in compute
self.result = qcng.compute(
~~~~~~~~~~~~^
self.plan(),
^^^^^^^^^^^^
...<8 lines>...
},
^^
)
^
File "/usr/lib/python3.13/site-packages/qcengine/compute.py", line 79, in compute
executor = get_program(program)
File "/usr/lib/python3.13/site-packages/qcengine/programs/base.py", line 81, in get_program
ret.found(raise_error=True)
~~~~~~~~~^^^^^^^^^^^^^^^^^^
File "/usr/lib/python3.13/site-packages/qcengine/programs/psi4.py", line 76, in found
with popen(["python", "-c", "import psi4; print(psi4.executable)"]) as exc:
exc["proc"].wait(timeout=30)
File "/usr/lib64/python3.13/contextlib.py", line 141, in enter
return next(self.gen)
File "/usr/lib/python3.13/site-packages/qcengine/util.py", line 307, in popen
ret = {"proc": subprocess.Popen(args, **popen_kwargs)}
~~~~~~~~~~~~~~~~^^^^^^^^^^^^^^^^^^^^^^
File "/usr/lib64/python3.13/subprocess.py", line 1036, in init
self._execute_child(args, executable, preexec_fn, close_fds,
~~~~~~~~~~~~~~~~~~~^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
pass_fds, cwd, env,
^^^^^^^^^^^^^^^^^^^
...<5 lines>...
gid, gids, uid, umask,
^^^^^^^^^^^^^^^^^^^^^^
start_new_session, process_group)
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
File "/usr/lib64/python3.13/subprocess.py", line 1966, in _execute_child
raise child_exception_type(errno_num, err_msg, err_filename)
FileNotFoundError: [Errno 2] No such file or directory: 'python'

qcengine should not try to call python; the call should be to python3.