From 62c024e277820b2fd3764a0499a71f03d4aa432d Mon Sep 17 00:00:00 2001
From: Eliah Kagan <degeneracypressure@gmail.com>
Date: Fri, 29 Sep 2023 19:33:07 -0400
Subject: [PATCH] Let tox run lint, mypy, and html envs without 3.9

The tox environments that are not duplicated per Python version
were set to run on Python 3.9, for consistency with Cygwin, where
3.9 is the latest available (through official Cygwin packages), so
output can be compared between Cygwin and other platforms while
troubleshooting problems.

However, this prevented them from running altogether on systems
where Python 3.9 was not installed. So I've added all the other
Python versions the project supports as fallback versions for those
tox environments to use, in one of the reasonable precedence
orders, while keeping 3.9 as the first choice for the same reasons
as before.
---
 tox.ini | 6 +++---
 1 file changed, 3 insertions(+), 3 deletions(-)

diff --git a/tox.ini b/tox.ini
index 47a7a6209..f9ac25b78 100644
--- a/tox.ini
+++ b/tox.ini
@@ -11,20 +11,20 @@ commands = pytest --color=yes {posargs}
 
 [testenv:lint]
 description = Lint via pre-commit
-base_python = py39
+base_python = py{39,310,311,312,38,37}
 set_env =
     SKIP = black-format
 commands = pre-commit run --all-files --hook-stage manual
 
 [testenv:mypy]
 description = Typecheck with mypy
-base_python = py39
+base_python = py{39,310,311,312,38,37}
 commands = mypy -p git
 ignore_outcome = true
 
 [testenv:html]
 description = Build HTML documentation
-base_python = py39
+base_python = py{39,310,311,312,38,37}
 deps = -r doc/requirements.txt
 allowlist_externals = make
 commands =