Sort output when installing seed packages (#1822)

This output is technically non-deterministic right now.

crates/uv/src/commands/venv.rs

@@ -6,6 +6,7 @@ use std::vec;
 use anstream::eprint;
 use anyhow::Result;
 use chrono::{DateTime, Utc};
+use itertools::Itertools;
 use miette::{Diagnostic, IntoDiagnostic};
 use owo_colors::OwoColorize;
 use thiserror::Error;
@@ -184,7 +185,10 @@ async fn venv_impl(
             .await
             .map_err(VenvError::Seed)?;
 
-        for distribution in resolution.distributions() {
+        for distribution in resolution
+            .distributions()
+            .sorted_unstable_by(|a, b| a.name().cmp(b.name()).then(a.version().cmp(&b.version())))
+        {
             writeln!(
                 printer,
                 " {} {}{}",

crates/uv/tests/venv.rs

@@ -232,8 +232,8 @@ fn seed_older_python_version() -> Result<()> {
     ----- stderr -----
     Using Python [VERSION] interpreter at [PATH]
     Creating virtualenv at: /home/ferris/project/.venv
-     + setuptools==68.2.2
      + pip==23.3.1
+     + setuptools==68.2.2
      + wheel==0.41.3
     Activate with: source /home/ferris/project/.venv/bin/activate
     "###