Allow specifying a custom PATH for which method

Closes #21794.

1 files changed, 3 insertions, 9 deletions

diff --git a/Library/Homebrew/requirements/python_dependency.rb b/Library/Homebrew/requirements/python_dependency.rb
index e84645da4..21d3c8af2 100644
--- a/Library/Homebrew/requirements/python_dependency.rb
+++ b/Library/Homebrew/requirements/python_dependency.rb
@@ -121,15 +121,9 @@ class PythonInstalled < Requirement
         # Note, we don't support homebrew/versions/pythonXX.rb, though.
         Formula.factory(@name).opt_prefix/"bin/python#{@min_version.major}"
       else
-        begin
-          # Using the ORIGINAL_PATHS here because in superenv, the user
-          # installed external Python is not visible otherwise.
-          tmp_PATH = ENV['PATH']
-          ENV['PATH'] = ORIGINAL_PATHS.join(':')
-          which(@name)
-        ensure
-          ENV['PATH'] = tmp_PATH
-        end
+        # Using the ORIGINAL_PATHS here because in superenv, the user
+        # installed external Python is not visible otherwise.
+        which(@name, ORIGINAL_PATHS.join(':'))
       end
     end
   end