use which for PATH check

Author: 2bndy5

noxfile.py

@@ -1,6 +1,6 @@
 import logging
 from os import environ
-from pathlib import Path
+from shutil import which
 import platform
 import re
 import sys
@@ -37,17 +37,12 @@ def __init__(self, session: nox.Session):
                 ci_logger.info("Found %s: %s" % (dep, ver))
         self.cargo_install_cmd: tuple[str, ...] = ("cargo", "install")
 
-        installed_path = Path("~/.cargo/bin")
-
         if CARGO_BINSTALL in cargo_bins:
             ci_logger.info(
                 "Found %s: %s" % (CARGO_BINSTALL, cargo_bins[CARGO_BINSTALL])
             )
-        elif (
-            installed_path
-            / (CARGO_BINSTALL + "" if platform.system() != "Windows" else ".exe")
-        ).exists():
-            ci_logger.info("Found %s" % CARGO_BINSTALL)
+        elif which(CARGO_BINSTALL) is not None:
+            ci_logger.info("Found: %s in PATH" % CARGO_BINSTALL)
         elif not IS_CI:
             ci_logger.info("Installing %s" % CARGO_BINSTALL)
             match platform.system():
@@ -85,16 +80,12 @@ def install():
             dep = req if not ver else f"{req}@{ver}"
             session.run(*self.cargo_install_cmd, dep, "--locked", external=True)
 
-        installed_path = Path("~/.cargo/bin")
-
         installed = False
         if req in self.cargo_bins:
             ci_logger.info("Found %s %s" % (req, self.cargo_bins[req]))
             installed = True
-        elif (
-            installed_path / (req + "" if platform.system() != "Windows" else ".exe")
-        ).exists():
-            ci_logger.info("Found %s" % req)
+        elif which(req) is not None:
+            ci_logger.info("Found: %s in PATH" % req)
             installed = True
         if ver or not installed:
             install()