Merge pull request #13294 from ichard26/revert-ruff

Revert "Apply ruff/flake8-comprehensions rule C420 (#13284)"

Author: uranusjr

pyproject.toml

@@ -168,6 +168,7 @@ ignore = [
     "B020",
     "B904", # Ruff enables opinionated warnings by default
     "B905", # Ruff enables opinionated warnings by default
+    "C420", # unnecessary-dict-comprehension-for-iterable (worsens readability)
 ]
 select = [
     "ASYNC",

src/pip/_internal/locations/_sysconfig.py

@@ -161,9 +161,9 @@ def get_scheme(
         scheme_name = "posix_prefix"
 
     if home is not None:
-        variables = dict.fromkeys(_HOME_KEYS, home)
+        variables = {k: home for k in _HOME_KEYS}
     elif prefix is not None:
-        variables = dict.fromkeys(_HOME_KEYS, prefix)
+        variables = {k: prefix for k in _HOME_KEYS}
     else:
         variables = {}