From bc0f7fe0d8a5ad8fa31b99d42d62fe533efac2af Mon Sep 17 00:00:00 2001
From: Stevie Gayet <stegayet@users.noreply.github.com>
Date: Mon, 1 Apr 2024 15:36:40 +0200
Subject: [PATCH] feat(python): display warning message when trying to use an
 unsupported Python version

Closes https://github.com/astral-sh/uv/issues/2587.
---
 crates/uv/src/commands/venv.rs | 5 +++++
 1 file changed, 5 insertions(+)

diff --git a/crates/uv/src/commands/venv.rs b/crates/uv/src/commands/venv.rs
index 6faa5e1316f9..9cd3c86d7eaf 100644
--- a/crates/uv/src/commands/venv.rs
+++ b/crates/uv/src/commands/venv.rs
@@ -23,6 +23,7 @@ use uv_resolver::{InMemoryIndex, OptionsBuilder};
 use uv_types::{
     BuildContext, BuildIsolation, ConfigSettings, InFlight, NoBinary, NoBuild, SetupPyStrategy,
 };
+use uv_warnings::warn_user;
 
 use crate::commands::ExitStatus;
 use crate::printer::Printer;
@@ -113,6 +114,10 @@ async fn venv_impl(
         find_default_python(cache).into_diagnostic()?
     };
 
+    if interpreter.python_tuple() < (3, 8) {
+        warn_user!("uv is only compatible with Python 3.8+, found Python {}.", interpreter.python_version());
+    }
+
     writeln!(
         printer.stderr(),
         "Using Python {} interpreter at: {}",