[Python] How to avoid modifying `sys.path` and handle dependencies when installing packages...

I have a script to install packages from a shared repository. However, I need to modify sys.path and insert the link to the repository every time I import any libraries. Below is the script I used

Is there a way to avoid modifying sys.path every time I import libraries?

Additionally, I have the beautifulsoup4 wheel file in the shared repository, but I can't import it later because it asks me to download the dependency file typing_extensions. Normally, when using pip install, there's no need to manually install such dependencies. Is there a way to avoid installing typing_extensions manually? Any help would be greatly appreciated!

import subprocess
import os
import sys
import re

shared_repo = r"C:..."
wheel_dir = shared_repo

installed, skipped, failed = [], [], []

def is_already_in_shared(wheel_filename):
m = re.match(r"^([A-Za-z0-9_.]+)-(\d+\.\d+\.\d+).*\.whl$", wheel_filename)
if not m:
return False

pkg_name, pkg_version = m.group(1), m.group(2)
dist_info = os.path.join(shared_repo, f"{pkg_name}-{pkg_version}.dist-info")
return os.path.isdir(dist_info)

if not os.path.isdir(wheel_dir):
print(f"ERROR: wheel directory not found:\n {wheel_dir}")
sys.exit(1)

for fname in os.listdir(wheel_dir):
if not fname.lower().endswith(".whl"):
continue

wheel_path = os.path.join(wheel_dir, fname)

if os.path.getsize(wheel_path) == 0:
print(f" Skipping empty/corrupt wheel: {fname}")
skipped.append(fname)
continue
if is_already_in_shared(fname):
print(f" Skipping {fname} — already in shared repo")
skipped.append(fname)
continue

print(f"\nInstalling {fname} → {shared_repo}")
result = subprocess.run(
[
sys.executable,
"-m",
"pip",
"install",
"--upgrade",
"--target", shared_repo,
wheel_path
],
stdout=subprocess.PIPE,
stderr=subprocess.PIPE,
text=True
)

if result.returncode == 0:
print(f" Successfully installed: {fname}")
installed.append(fname)
else:
print(f" FAILED to install: {fname}")
failed.append(fname)
error_file = os.path.join(wheel_dir, f"{fname}_error.txt")
with open(error_file, "w", encoding="utf-8") as ef:
ef.write(result.stderr)

print("\nInstalled wheels: ", installed)
print("Skipped wheels: ", skipped)
print("Failed wheels: ", failed)

if shared_repo not in sys.path:
sys.path.insert(0, shared_repo)

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