From d243b90780ef464c3b8f6d7801c96f9d5bc1df8e Mon Sep 17 00:00:00 2001
From: AP Ljungquist <ap@ljungquist.eu>
Date: Sun, 20 Aug 2023 17:48:23 +0200
Subject: [PATCH 1/2] Remove py37 from tox.ini

... so that running `tox` locally at least has a chance of succeeding.
---
 tox.ini | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/tox.ini b/tox.ini
index 295e58798..473826776 100644
--- a/tox.ini
+++ b/tox.ini
@@ -1,7 +1,7 @@
 [tox]
 envlist =
     # NOTE: keep this in sync with the env list in .github/workflows/ci.yml.
-    py{37,38,39,310,311,312,py3}-pip{previous,latest,main}-coverage
+    py{38,39,310,311,312,py3}-pip{previous,latest,main}-coverage
     pip{previous,latest,main}-coverage
     pip{previous,latest,main}
     checkqa

From edc0b0d2da47e5efff8477e0311d9689aefe43e5 Mon Sep 17 00:00:00 2001
From: AP Ljungquist <ap@ljungquist.eu>
Date: Sun, 20 Aug 2023 17:40:49 +0200
Subject: [PATCH 2/2] Increase minimum pip version to 23

... so that we can pip's vendored pyproject_hooks.
---
 pyproject.toml      | 2 +-
 tests/test_utils.py | 5 +++++
 tox.ini             | 2 +-
 3 files changed, 7 insertions(+), 2 deletions(-)

diff --git a/pyproject.toml b/pyproject.toml
index 8ee07b2d0..b6d245070 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -38,7 +38,7 @@ dependencies = [
   # direct dependencies
   "build",
   "click >= 8",
-  "pip >= 22.2",
+  "pip >= 23",
   "tomli; python_version < '3.11'",
   # indirect dependencies
   "setuptools", # typically needed when pip-tools invokes setup.py
diff --git a/tests/test_utils.py b/tests/test_utils.py
index 7d31af92f..dd20e34ff 100644
--- a/tests/test_utils.py
+++ b/tests/test_utils.py
@@ -36,6 +36,11 @@
 )
 
 
+def test_can_import_pyproject_hooks():
+    # TODO: Remove this test when there is code using this package
+    from pip._vendor import pyproject_hooks  # noqa: F401
+
+
 def test_format_requirement(from_line):
     ireq = from_line("test==1.2")
     assert format_requirement(ireq) == "test==1.2"
diff --git a/tox.ini b/tox.ini
index 473826776..581ae2b56 100644
--- a/tox.ini
+++ b/tox.ini
@@ -14,7 +14,7 @@ extras =
     testing
     coverage: coverage
 deps =
-    pipprevious: pip==22.2.*
+    pipprevious: pip==23.0.*
     piplatest: pip
     pipmain: https://github.com/pypa/pip/archive/main.zip
 setenv =