From f03bd6a89bfb26f5e34063f7d02bb4046cd7b9d4 Mon Sep 17 00:00:00 2001
From: Sam Estep <sam@samestep.com>
Date: Tue, 5 Nov 2024 12:37:15 -0500
Subject: [PATCH] Set `.python-version` to 3.10 for pyenv users (#4456)

The contribution docs for macOS say to install Python 3.10:


https://github.com/carbon-language/carbon-lang/blob/957599b2ab036d01b325aa6e82edea0fce7b4c53/docs/project/contribution_tools.md#L118-L124

For people who are using [pyenv](https://github.com/pyenv/pyenv) instead
of Homebrew Python, this PR adds a `.python-version` file to specify
Python 3.10 for pyenv to use.

However, I also see that later in the same document, the docs only say
that Python >=3.9 is required:


https://github.com/carbon-language/carbon-lang/blob/957599b2ab036d01b325aa6e82edea0fce7b4c53/docs/project/contribution_tools.md?plain=1#L162

So in that case, feel free to just close this PR. I also saw that #778
specifically moved Carbon away from pyenv, so if pyenv is discouraged in
general, also feel free to just close this.
---
 .pre-commit-config.yaml | 1 +
 .python-version         | 1 +
 2 files changed, 2 insertions(+)
 create mode 100644 .python-version

diff --git a/.pre-commit-config.yaml b/.pre-commit-config.yaml
index 49e38661e95d2..6ff1f187024f7 100644
--- a/.pre-commit-config.yaml
+++ b/.pre-commit-config.yaml
@@ -213,6 +213,7 @@ repos:
           (?x)^(
               .bazelversion|
               .github/pull_request_template.md|
+              .python-version|
               compile_flags.txt|
               github_tools/requirements.txt|
               third_party/.*|
diff --git a/.python-version b/.python-version
new file mode 100644
index 0000000000000..c8cfe3959183f
--- /dev/null
+++ b/.python-version
@@ -0,0 +1 @@
+3.10