From 9a80e95600d7c4df6c8641c4533a3376ada1068a Mon Sep 17 00:00:00 2001
From: Erik Sundell <erik.i.sundell@gmail.com>
Date: Mon, 31 Oct 2022 12:51:00 +0100
Subject: [PATCH] pipfile: pass --clear flag, and do it separetely to not be
 ignored

Maybe --clear flag works as part of `pipenv install` now, but code
inspection indicates to me it still don't. This resolves the issue with
the pipenv versions we currently use in tests at least.
---
 repo2docker/buildpacks/pipfile/__init__.py | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/repo2docker/buildpacks/pipfile/__init__.py b/repo2docker/buildpacks/pipfile/__init__.py
index a5117ff5..959c8b72 100644
--- a/repo2docker/buildpacks/pipfile/__init__.py
+++ b/repo2docker/buildpacks/pipfile/__init__.py
@@ -154,7 +154,8 @@ class PipfileBuildPack(CondaBuildPack):
                 "${NB_USER}",
                 """(cd {working_directory} && \\
                     PATH="${{KERNEL_PYTHON_PREFIX}}/bin:$PATH" \\
-                        pipenv install {install_option} --system --dev \\
+                        pipenv install {install_option} --system --dev && \\
+                        pipenv --clear \\
                 )""".format(
                     working_directory=working_directory,
                     install_option="--ignore-pipfile"