python installer needs some love

[dnarayanan]

if you are in a more modern python (i'm trying this in 3.11) and run

pd_front_end.py [args]

you get this error:

(py311) [desika.narayanan@c0713a-s30 snap200]$ pd_front_end.py  ./ parameters_master_arepo snap200_galaxy0
/home/desika.narayanan/.conda/envs/py311/bin/pd_front_end.py: line 7: from: command not found
/home/desika.narayanan/.conda/envs/py311/bin/pd_front_end.py: line 8: from: command not found
/home/desika.narayanan/.conda/envs/py311/bin/pd_front_end.py: line 9: from: command not found
/home/desika.narayanan/.conda/envs/py311/bin/pd_front_end.py: line 10: from: command not found
/home/desika.narayanan/.conda/envs/py311/bin/pd_front_end.py: line 11: from: command not found
import: unable to open X server `' @ error/import.c/ImportImageCommand/346.
/home/desika.narayanan/.conda/envs/py311/bin/pd_front_end.py: line 13: from: command not found
/home/desika.narayanan/.conda/envs/py311/bin/pd_front_end.py: line 14: from: command not found
import: unable to open X server `' @ error/import.c/ImportImageCommand/346.
import: unable to open X server `' @ error/import.c/ImportImageCommand/346.
import: unable to open X server `' @ error/import.c/ImportImageCommand/346.
/home/desika.narayanan/.conda/envs/py311/bin/pd_front_end.py: line 18: from: command not found
/home/desika.narayanan/.conda/envs/py311/bin/pd_front_end.py: line 19: from: command not found
import: unable to open X server `' @ error/import.c/ImportImageCommand/346.
import: unable to open X server `' @ error/import.c/ImportImageCommand/346.
import: unable to open X server `' @ error/import.c/ImportImageCommand/346.
import: unable to open X server `' @ error/import.c/ImportImageCommand/346.
import: unable to open X server `' @ error/import.c/ImportImageCommand/346.
import: unable to open X server `' @ error/import.c/ImportImageCommand/346.
import: unable to open X server `' @ error/import.c/ImportImageCommand/346.
import: unable to open X server `' @ error/import.c/ImportImageCommand/346.
import: unable to open X server `' @ error/import.c/ImportImageCommand/346.
/home/desika.narayanan/.conda/envs/py311/bin/pd_front_end.py: line 30: syntax error near unexpected token `0'
/home/desika.narayanan/.conda/envs/py311/bin/pd_front_end.py: line 30: `gc.set_threshold(0)'

if you call it like this:

(py311) [desika.narayanan@c0713a-s30 snap200]$ python /home/desika.narayanan/pd_git/pd_front_end.py ./ parameters_master_arepo snap200_galaxy0

it works - this i think is an issue in setup.py that needs to be fixed

[dnarayanan]

also on these notes the setup.py needs to enforce this scipy==1.13.1