Avoid using 3.8 in tests when feasible (#13680)

See https://github.com/astral-sh/uv/issues/13676

Python 3.8 is EOL, and we should avoid using it for tests unless we're
covering 3.8-specific behaviors.

In some cases, the Python version we require for the test is arbitrary,
for which I've added a new constant (set to 3.12). In other cases, we
require an older Python version for compatibility with various packages,
like `setuptools`. For those, we can _probably_ switch to a newer
version but it'd be more invasive as we'd need to change our constraints
or `exclude-newer`.

Adds a feature flag for cases where we still need to use the EOL
version.

There's a lot of usage in packse scenarios too, I'll update those
separately because the diff will be large.

crates/uv/Cargo.toml

@@ -156,6 +156,7 @@ default-tests = [
     "pypi",
     "python",
     "python-managed",
+    "python-eol",
     "slow-tests",
     "test-ecosystem"
 ]
@@ -169,6 +170,8 @@ pypi = []
 python = []
 # Introduces a testing dependency on a local Python installation with specific patch versions.
 python-patch = []
+# Introduces a testing dependency on a local Python installation with an EOL version.
+python-eol = []
 # Introduces a testing dependency on managed Python installations.
 python-managed = []
 # Include "slow" test cases.

crates/uv/tests/it/build.rs

@@ -1,4 +1,4 @@
-use crate::common::{TestContext, uv_snapshot};
+use crate::common::{DEFAULT_PYTHON_VERSION, TestContext, uv_snapshot};
 use anyhow::Result;
 use assert_cmd::assert::OutputAssertExt;
 use assert_fs::prelude::*;
@@ -898,7 +898,7 @@ fn build_constraints() -> Result<()> {
 
 #[test]
 fn build_sha() -> Result<()> {
-    let context = TestContext::new("3.8");
+    let context = TestContext::new(DEFAULT_PYTHON_VERSION);
     let filters = context
         .filters()
         .into_iter()

crates/uv/tests/it/common/mod.rs

@@ -33,6 +33,7 @@ use uv_static::EnvVars;
 static EXCLUDE_NEWER: &str = "2024-03-25T00:00:00Z";
 
 pub const PACKSE_VERSION: &str = "0.3.46";
+pub const DEFAULT_PYTHON_VERSION: &str = "3.12";
 
 /// Using a find links url allows using `--index-url` instead of `--extra-index-url` in tests
 /// to prevent dependency confusion attacks against our test suite.

crates/uv/tests/it/edit.rs

@@ -10982,7 +10982,7 @@ fn repeated_index_cli_reversed() -> Result<()> {
 
 #[test]
 fn add_with_build_constraints() -> Result<()> {
-    let context = TestContext::new("3.8");
+    let context = TestContext::new("3.9");
 
     let pyproject_toml = context.temp_dir.child("pyproject.toml");
     pyproject_toml.write_str(indoc! {r#"

crates/uv/tests/it/init.rs

@@ -2365,7 +2365,7 @@ fn init_requires_python_version() -> Result<()> {
     })?;
 
     let child = context.temp_dir.join("foo");
-    uv_snapshot!(context.filters(), context.init().current_dir(&context.temp_dir).arg(&child).arg("--python").arg("3.8"), @r###"
+    uv_snapshot!(context.filters(), context.init().current_dir(&context.temp_dir).arg(&child).arg("--python").arg("3.9"), @r###"
     success: true
     exit_code: 0
     ----- stdout -----
@@ -2380,15 +2380,15 @@ fn init_requires_python_version() -> Result<()> {
         filters => context.filters(),
     }, {
         assert_snapshot!(
-            pyproject_toml, @r###"
+            pyproject_toml, @r#"
         [project]
         name = "foo"
         version = "0.1.0"
         description = "Add your description here"
         readme = "README.md"
-        requires-python = ">=3.8"
+        requires-python = ">=3.9"
         dependencies = []
-        "###
+        "#
         );
     });
 
@@ -2397,7 +2397,7 @@ fn init_requires_python_version() -> Result<()> {
         filters => context.filters(),
     }, {
         assert_snapshot!(
-            python_version, @"3.8"
+            python_version, @"3.9"
         );
     });
 
@@ -2466,9 +2466,9 @@ fn init_requires_python_specifiers() -> Result<()> {
 /// Run `uv init`, inferring the `requires-python` from the `.python-version` file.
 #[test]
 fn init_requires_python_version_file() -> Result<()> {
-    let context = TestContext::new_with_versions(&["3.8", "3.12"]);
+    let context = TestContext::new_with_versions(&["3.9", "3.12"]);
 
-    context.temp_dir.child(".python-version").write_str("3.8")?;
+    context.temp_dir.child(".python-version").write_str("3.9")?;
 
     let child = context.temp_dir.join("foo");
     uv_snapshot!(context.filters(), context.init().current_dir(&context.temp_dir).arg(&child), @r###"
@@ -2485,15 +2485,15 @@ fn init_requires_python_version_file() -> Result<()> {
         filters => context.filters(),
     }, {
         assert_snapshot!(
-            pyproject_toml, @r###"
+            pyproject_toml, @r#"
         [project]
         name = "foo"
         version = "0.1.0"
         description = "Add your description here"
         readme = "README.md"
-        requires-python = ">=3.8"
+        requires-python = ">=3.9"
         dependencies = []
-        "###
+        "#
         );
     });
 

crates/uv/tests/it/lock.rs

@@ -2220,6 +2220,7 @@ fn lock_dependency_extra() -> Result<()> {
 }
 
 /// Lock a project with a dependency that has a conditional extra.
+#[cfg(feature = "python-eol")]
 #[test]
 fn lock_conditional_dependency_extra() -> Result<()> {
     let context = TestContext::new("3.12");

crates/uv/tests/it/pip_compile.rs

@@ -17,7 +17,9 @@ use wiremock::{Mock, MockServer, ResponseTemplate};
 use uv_fs::Simplified;
 use uv_static::EnvVars;
 
-use crate::common::{TestContext, download_to_disk, packse_index_url, uv_snapshot};
+use crate::common::{
+    DEFAULT_PYTHON_VERSION, TestContext, download_to_disk, packse_index_url, uv_snapshot,
+};
 
 #[test]
 fn compile_requirements_in() -> Result<()> {
@@ -2105,6 +2107,7 @@ fn omit_non_matching_annotation() -> Result<()> {
 
 /// Test that we select the last 3.8 compatible numpy version instead of trying to compile an
 /// incompatible sdist <https://github.com/astral-sh/uv/issues/388>
+#[cfg(feature = "python-eol")]
 #[test]
 fn compile_numpy_py38() -> Result<()> {
     let context = TestContext::new("3.8");
@@ -5563,6 +5566,7 @@ coverage = ["example[test]", "extras>=0.0.1,<=0.0.2"]
 ///
 /// `voluptuous==0.15.1` requires Python 3.9 or later, so we should resolve to an earlier version
 /// and avoiding building 0.15.1 at all.
+#[cfg(feature = "python-eol")]
 #[test]
 fn requires_python_prefetch() -> Result<()> {
     let context = TestContext::new("3.8").with_exclude_newer("2025-01-01T00:00:00Z");
@@ -13551,7 +13555,7 @@ fn ignore_invalid_constraint() -> Result<()> {
 /// Include a `build_constraints.txt` file with an incompatible constraint.
 #[test]
 fn incompatible_build_constraint() -> Result<()> {
-    let context = TestContext::new("3.8");
+    let context = TestContext::new(DEFAULT_PYTHON_VERSION);
     let requirements_txt = context.temp_dir.child("requirements.txt");
     requirements_txt.write_str("requests==1.2")?;
 
@@ -13580,7 +13584,7 @@ fn incompatible_build_constraint() -> Result<()> {
 /// Include a `build_constraints.txt` file with a compatible constraint.
 #[test]
 fn compatible_build_constraint() -> Result<()> {
-    let context = TestContext::new("3.8");
+    let context = TestContext::new("3.9");
     let requirements_txt = context.temp_dir.child("requirements.txt");
     requirements_txt.write_str("requests==1.2")?;
 
@@ -13590,7 +13594,7 @@ fn compatible_build_constraint() -> Result<()> {
     uv_snapshot!(context.pip_compile()
         .arg("requirements.txt")
         .arg("--build-constraint")
-        .arg("build_constraints.txt"), @r###"
+        .arg("build_constraints.txt"), @r"
     success: true
     exit_code: 0
     ----- stdout -----
@@ -13601,7 +13605,7 @@ fn compatible_build_constraint() -> Result<()> {
 
     ----- stderr -----
     Resolved 1 package in [TIME]
-    "###
+    "
     );
 
     Ok(())
@@ -13610,7 +13614,7 @@ fn compatible_build_constraint() -> Result<()> {
 /// Include `build-constraint-dependencies` in pyproject.toml with an incompatible constraint.
 #[test]
 fn incompatible_build_constraint_in_pyproject_toml() -> Result<()> {
-    let context = TestContext::new("3.8");
+    let context = TestContext::new(DEFAULT_PYTHON_VERSION);
     let pyproject_toml = context.temp_dir.child("pyproject.toml");
     pyproject_toml.write_str(
         r#"[build-system]
@@ -13648,6 +13652,7 @@ build-constraint-dependencies = [
 }
 
 /// Include `build-constraint-dependencies` in pyproject.toml with a compatible constraint.
+#[cfg(feature = "python-eol")]
 #[test]
 fn compatible_build_constraint_in_pyproject_toml() -> Result<()> {
     let context = TestContext::new("3.8");
@@ -13691,7 +13696,7 @@ build-constraint-dependencies = [
 /// Merge `build_constraints.txt` with `build-constraint-dependencies` in pyproject.toml with an incompatible constraint.
 #[test]
 fn incompatible_build_constraint_merged_with_pyproject_toml() -> Result<()> {
-    let context = TestContext::new("3.8");
+    let context = TestContext::new(DEFAULT_PYTHON_VERSION);
 
     // incompatible setuptools version in pyproject.toml, compatible in build_constraints.txt
     let constraints_txt = context.temp_dir.child("build_constraints.txt");
@@ -13776,7 +13781,7 @@ build-constraint-dependencies = [
 /// Merge CLI args `build_constraints.txt` with `build-constraint-dependencies` in pyproject.toml with a compatible constraint.
 #[test]
 fn compatible_build_constraint_merged_with_pyproject_toml() -> Result<()> {
-    let context = TestContext::new("3.8");
+    let context = TestContext::new("3.9");
 
     // incompatible setuptools version in pyproject.toml, compatible in build_constraints.txt
     let constraints_txt = context.temp_dir.child("build_constraints.txt");
@@ -13942,7 +13947,7 @@ fn invalid_extra() -> Result<()> {
 #[test]
 #[cfg(not(windows))]
 fn symlink() -> Result<()> {
-    let context = TestContext::new("3.8");
+    let context = TestContext::new(DEFAULT_PYTHON_VERSION);
     let requirements_in = context.temp_dir.child("requirements.in");
     requirements_in.write_str("anyio")?;
 
@@ -13958,7 +13963,7 @@ fn symlink() -> Result<()> {
     uv_snapshot!(context.pip_compile()
         .arg("requirements.in")
         .arg("--output-file")
-        .arg("requirements-symlink.txt"), @r###"
+        .arg("requirements-symlink.txt"), @r"
     success: true
     exit_code: 0
     ----- stdout -----
@@ -13966,18 +13971,14 @@ fn symlink() -> Result<()> {
     #    uv pip compile --cache-dir [CACHE_DIR] requirements.in --output-file requirements-symlink.txt
     anyio==4.3.0
         # via -r requirements.in
-    exceptiongroup==1.2.0
-        # via anyio
     idna==3.6
         # via anyio
     sniffio==1.3.1
         # via anyio
-    typing-extensions==4.10.0
-        # via anyio
 
     ----- stderr -----
-    Resolved 5 packages in [TIME]
+    Resolved 3 packages in [TIME]
-    "###
+    "
     );
 
     // The symlink should still be a symlink.
@@ -14486,6 +14487,7 @@ fn unsupported_requires_python_static_metadata() -> Result<()> {
 /// dynamic metadata.
 ///
 /// See: <https://github.com/astral-sh/uv/issues/8767>
+#[cfg(feature = "python-eol")]
 #[test]
 fn unsupported_requires_python_dynamic_metadata() -> Result<()> {
     let context = TestContext::new("3.8").with_exclude_newer("2024-11-04T00:00:00Z");
@@ -14986,6 +14988,7 @@ fn compile_lowest_extra_unpinned_warning() -> Result<()> {
     Ok(())
 }
 
+#[cfg(feature = "python-eol")]
 #[test]
 fn disjoint_requires_python() -> Result<()> {
     let context = TestContext::new("3.8").with_exclude_newer("2025-01-29T00:00:00Z");
@@ -15086,6 +15089,7 @@ fn dynamic_version_source_dist() -> Result<()> {
     Ok(())
 }
 
+#[cfg(feature = "python-eol")]
 #[test]
 fn max_python_requirement() -> Result<()> {
     let context = TestContext::new("3.8").with_exclude_newer("2024-12-18T00:00:00Z");
@@ -15994,6 +15998,7 @@ fn directory_and_group() -> Result<()> {
 }
 
 /// See: <https://github.com/astral-sh/uv/issues/10957>
+#[cfg(feature = "python-eol")]
 #[test]
 fn compile_preserve_requires_python_split() -> Result<()> {
     let context = TestContext::new("3.8").with_exclude_newer("2025-01-01T00:00:00Z");

crates/uv/tests/it/pip_install.rs

@@ -18,8 +18,8 @@ use wiremock::{
 #[cfg(feature = "git")]
 use crate::common::{self, decode_token};
 use crate::common::{
-    TestContext, build_vendor_links_url, download_to_disk, get_bin, uv_snapshot, venv_bin_path,
+    DEFAULT_PYTHON_VERSION, TestContext, build_vendor_links_url, download_to_disk, get_bin,
-    venv_to_interpreter,
+    uv_snapshot, venv_bin_path, venv_to_interpreter,
 };
 use uv_fs::Simplified;
 use uv_static::EnvVars;
@@ -1949,7 +1949,7 @@ async fn install_deduplicated_indices() {
 #[test]
 #[cfg(feature = "git")]
 fn install_git_public_https() {
-    let context = TestContext::new("3.8");
+    let context = TestContext::new(DEFAULT_PYTHON_VERSION);
 
     uv_snapshot!(
         context
@@ -1974,7 +1974,7 @@ fn install_git_public_https() {
 #[test]
 #[cfg(feature = "git")]
 fn install_implicit_git_public_https() {
-    let context = TestContext::new("3.8");
+    let context = TestContext::new(DEFAULT_PYTHON_VERSION);
 
     uv_snapshot!(
         context
@@ -1999,7 +1999,7 @@ fn install_implicit_git_public_https() {
 #[test]
 #[cfg(feature = "git")]
 fn update_ref_git_public_https() {
-    let context = TestContext::new("3.8");
+    let context = TestContext::new(DEFAULT_PYTHON_VERSION);
 
     uv_snapshot!(
         context
@@ -2046,7 +2046,7 @@ fn update_ref_git_public_https() {
 #[test]
 #[cfg(feature = "git")]
 fn install_git_public_https_missing_branch_or_tag() {
-    let context = TestContext::new("3.8");
+    let context = TestContext::new(DEFAULT_PYTHON_VERSION);
 
     let mut filters = context.filters();
     // Windows does not style the command the same as Unix, so we must omit it from the snapshot
@@ -2075,7 +2075,7 @@ fn install_git_public_https_missing_branch_or_tag() {
 #[test]
 #[cfg(feature = "git")]
 fn install_git_public_https_missing_commit() {
-    let context = TestContext::new("3.8");
+    let context = TestContext::new(DEFAULT_PYTHON_VERSION);
 
     let mut filters = context.filters();
     // Windows does not style the command the same as Unix, so we must omit it from the snapshot
@@ -2117,7 +2117,7 @@ fn install_git_public_https_missing_commit() {
 fn install_git_private_https_pat() {
     use crate::common::decode_token;
 
-    let context = TestContext::new("3.8");
+    let context = TestContext::new(DEFAULT_PYTHON_VERSION);
     let token = decode_token(common::READ_ONLY_GITHUB_TOKEN);
     let package = format!(
         "uv-private-pypackage@ git+https://{token}@github.com/astral-test/uv-private-pypackage"
@@ -2144,7 +2144,7 @@ fn install_git_private_https_pat() {
 #[test]
 #[cfg(all(not(windows), feature = "git"))]
 fn install_git_private_https_pat_mixed_with_public() {
-    let context = TestContext::new("3.8");
+    let context = TestContext::new(DEFAULT_PYTHON_VERSION);
     let token = decode_token(common::READ_ONLY_GITHUB_TOKEN);
 
     let package = format!(
@@ -2172,7 +2172,7 @@ fn install_git_private_https_pat_mixed_with_public() {
 #[test]
 #[cfg(all(not(windows), feature = "git"))]
 fn install_git_private_https_multiple_pat() {
-    let context = TestContext::new("3.8");
+    let context = TestContext::new(DEFAULT_PYTHON_VERSION);
     let token_1 = decode_token(common::READ_ONLY_GITHUB_TOKEN);
     let token_2 = decode_token(common::READ_ONLY_GITHUB_TOKEN_2);
 
@@ -2204,7 +2204,7 @@ fn install_git_private_https_multiple_pat() {
 #[test]
 #[cfg(feature = "git")]
 fn install_git_private_https_pat_at_ref() {
-    let context = TestContext::new("3.8");
+    let context = TestContext::new(DEFAULT_PYTHON_VERSION);
     let token = decode_token(common::READ_ONLY_GITHUB_TOKEN);
 
     let mut filters = context.filters();
@@ -2246,7 +2246,7 @@ fn install_git_private_https_pat_at_ref() {
 #[cfg(feature = "git")]
 #[ignore]
 fn install_git_private_https_pat_and_username() {
-    let context = TestContext::new("3.8");
+    let context = TestContext::new(DEFAULT_PYTHON_VERSION);
     let token = decode_token(common::READ_ONLY_GITHUB_TOKEN);
     let user = "astral-test-bot";
 
@@ -2270,7 +2270,7 @@ fn install_git_private_https_pat_and_username() {
 #[test]
 #[cfg(all(not(windows), feature = "git"))]
 fn install_git_private_https_pat_not_authorized() {
-    let context = TestContext::new("3.8");
+    let context = TestContext::new(DEFAULT_PYTHON_VERSION);
 
     // A revoked token
     let token = "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";
@@ -2309,7 +2309,7 @@ fn install_git_private_https_pat_not_authorized() {
 #[test]
 #[cfg(not(windows))]
 fn install_github_artifact_private_https_pat_mixed_with_public() {
-    let context = TestContext::new("3.8");
+    let context = TestContext::new(DEFAULT_PYTHON_VERSION);
     let token = decode_token(common::READ_ONLY_GITHUB_TOKEN);
 
     let private_package = format!(
@@ -2339,7 +2339,7 @@ fn install_github_artifact_private_https_pat_mixed_with_public() {
 #[test]
 #[cfg(not(windows))]
 fn install_github_artifact_private_https_multiple_pat() {
-    let context = TestContext::new("3.8");
+    let context = TestContext::new(DEFAULT_PYTHON_VERSION);
     let token_1 = decode_token(common::READ_ONLY_GITHUB_TOKEN);
     let token_2 = decode_token(common::READ_ONLY_GITHUB_TOKEN_2);
 
@@ -2373,7 +2373,7 @@ fn install_github_artifact_private_https_multiple_pat() {
 #[test]
 #[cfg(feature = "git")]
 fn install_git_private_https_interactive() {
-    let context = TestContext::new("3.8");
+    let context = TestContext::new(DEFAULT_PYTHON_VERSION);
 
     let package = "uv-private-pypackage@ git+https://github.com/astral-test/uv-private-pypackage";
 
@@ -6343,7 +6343,7 @@ fn already_installed_multiple_versions() -> Result<()> {
 #[test]
 #[cfg(feature = "git")]
 fn already_installed_remote_url() {
-    let context = TestContext::new("3.8");
+    let context = TestContext::new(DEFAULT_PYTHON_VERSION);
 
     // First, install from the remote URL
     uv_snapshot!(context.filters(), context.pip_install().arg("uv-public-pypackage @ git+https://github.com/astral-test/uv-public-pypackage"), @r###"
@@ -8262,7 +8262,7 @@ fn install_unsupported_environment_yml() -> Result<()> {
 /// Include a `build_constraints.txt` file with an incompatible constraint.
 #[test]
 fn incompatible_build_constraint() -> Result<()> {
-    let context = TestContext::new("3.8");
+    let context = TestContext::new(DEFAULT_PYTHON_VERSION);
 
     let constraints_txt = context.temp_dir.child("build_constraints.txt");
     constraints_txt.write_str("setuptools==1")?;
@@ -8289,7 +8289,7 @@ fn incompatible_build_constraint() -> Result<()> {
 /// Include a `build_constraints.txt` file with a compatible constraint.
 #[test]
 fn compatible_build_constraint() -> Result<()> {
-    let context = TestContext::new("3.8");
+    let context = TestContext::new("3.9");
 
     let constraints_txt = context.temp_dir.child("build_constraints.txt");
     constraints_txt.write_str("setuptools>=40")?;
@@ -8297,7 +8297,7 @@ fn compatible_build_constraint() -> Result<()> {
     uv_snapshot!(context.pip_install()
         .arg("requests==1.2")
         .arg("--build-constraint")
-        .arg("build_constraints.txt"), @r###"
+        .arg("build_constraints.txt"), @r"
     success: true
     exit_code: 0
     ----- stdout -----
@@ -8307,7 +8307,7 @@ fn compatible_build_constraint() -> Result<()> {
     Prepared 1 package in [TIME]
     Installed 1 package in [TIME]
      + requests==1.2.0
-    "###
+    "
     );
 
     Ok(())
@@ -8316,7 +8316,7 @@ fn compatible_build_constraint() -> Result<()> {
 /// Include `build-constraint-dependencies` in pyproject.toml with an incompatible constraint.
 #[test]
 fn incompatible_build_constraint_in_pyproject_toml() -> Result<()> {
-    let context = TestContext::new("3.8");
+    let context = TestContext::new(DEFAULT_PYTHON_VERSION);
 
     let pyproject_toml = context.temp_dir.child("pyproject.toml");
     pyproject_toml.write_str(
@@ -8345,6 +8345,7 @@ build-constraint-dependencies = [
 }
 
 /// Include a `build_constraints.txt` file with a compatible constraint.
+#[cfg(feature = "python-eol")]
 #[test]
 fn compatible_build_constraint_in_pyproject_toml() -> Result<()> {
     let context = TestContext::new("3.8");
@@ -8359,7 +8360,7 @@ build-constraint-dependencies = [
     )?;
 
     uv_snapshot!(context.pip_install()
-        .arg("requests==1.2"), @r###"
+        .arg("requests==1.2"), @r"
     success: true
     exit_code: 0
     ----- stdout -----
@@ -8369,7 +8370,7 @@ build-constraint-dependencies = [
     Prepared 1 package in [TIME]
     Installed 1 package in [TIME]
      + requests==1.2.0
-    "###
+    "
     );
 
     Ok(())
@@ -8378,7 +8379,7 @@ build-constraint-dependencies = [
 /// Merge `build_constraints.txt` with `build-constraint-dependencies` in pyproject.toml with an incompatible constraint.
 #[test]
 fn incompatible_build_constraint_merged_with_pyproject_toml() -> Result<()> {
-    let context = TestContext::new("3.8");
+    let context = TestContext::new(DEFAULT_PYTHON_VERSION);
 
     // Incompatible setuptools version in pyproject.toml, compatible in build_constraints.txt.
     let constraints_txt = context.temp_dir.child("build_constraints.txt");
@@ -8442,7 +8443,7 @@ build-constraint-dependencies = [
 /// Merge `build_constraints.txt` with `build-constraint-dependencies` in pyproject.toml with a compatible constraint.
 #[test]
 fn compatible_build_constraint_merged_with_pyproject_toml() -> Result<()> {
-    let context = TestContext::new("3.8");
+    let context = TestContext::new("3.9");
 
     let constraints_txt = context.temp_dir.child("build_constraints.txt");
     constraints_txt.write_str("setuptools>=40")?;
@@ -8458,7 +8459,7 @@ build-constraint-dependencies = [
     uv_snapshot!(context.pip_install()
         .arg("requests==1.2")
         .arg("--build-constraint")
-        .arg("build_constraints.txt"), @r###"
+        .arg("build_constraints.txt"), @r"
     success: true
     exit_code: 0
     ----- stdout -----
@@ -8468,7 +8469,7 @@ build-constraint-dependencies = [
     Prepared 1 package in [TIME]
     Installed 1 package in [TIME]
      + requests==1.2.0
-    "###
+    "
     );
     Ok(())
 }
@@ -8569,7 +8570,7 @@ fn install_build_isolation_package() -> Result<()> {
 /// Install a package with an unsupported extension.
 #[test]
 fn invalid_extension() {
-    let context = TestContext::new("3.8");
+    let context = TestContext::new(DEFAULT_PYTHON_VERSION);
 
     uv_snapshot!(context.filters(), context.pip_install()
         .arg("ruff @ https://files.pythonhosted.org/packages/f7/69/96766da2cdb5605e6a31ef2734aff0be17901cefb385b885c2ab88896d76/ruff-0.5.6.tar.baz")
@@ -8589,7 +8590,7 @@ fn invalid_extension() {
 /// Install a package without unsupported extension.
 #[test]
 fn no_extension() {
-    let context = TestContext::new("3.8");
+    let context = TestContext::new(DEFAULT_PYTHON_VERSION);
 
     uv_snapshot!(context.filters(), context.pip_install()
         .arg("ruff @ https://files.pythonhosted.org/packages/f7/69/96766da2cdb5605e6a31ef2734aff0be17901cefb385b885c2ab88896d76/ruff-0.5.6")

crates/uv/tests/it/pip_sync.rs

@@ -779,7 +779,7 @@ fn install_sdist_url() -> Result<()> {
 /// Install a package with source archive format `.tar.bz2`.
 #[test]
 fn install_sdist_archive_type_bz2() -> Result<()> {
-    let context = TestContext::new("3.8");
+    let context = TestContext::new("3.9");
 
     let requirements_txt = context.temp_dir.child("requirements.txt");
     requirements_txt.write_str(&format!(
@@ -922,6 +922,7 @@ fn install_version_then_install_url() -> Result<()> {
 
 /// Test that we select the last 3.8 compatible numpy version instead of trying to compile an
 /// incompatible sdist <https://github.com/astral-sh/uv/issues/388>
+#[cfg(feature = "python-eol")]
 #[test]
 fn install_numpy_py38() -> Result<()> {
     let context = TestContext::new("3.8");
@@ -5538,7 +5539,7 @@ fn preserve_markers() -> Result<()> {
 /// Include a `build_constraints.txt` file with an incompatible constraint.
 #[test]
 fn incompatible_build_constraint() -> Result<()> {
-    let context = TestContext::new("3.8");
+    let context = TestContext::new("3.9");
     let requirements_txt = context.temp_dir.child("requirements.txt");
     requirements_txt.write_str("requests==1.2")?;
 
@@ -5568,7 +5569,7 @@ fn incompatible_build_constraint() -> Result<()> {
 /// Include a `build_constraints.txt` file with a compatible constraint.
 #[test]
 fn compatible_build_constraint() -> Result<()> {
-    let context = TestContext::new("3.8");
+    let context = TestContext::new("3.9");
     let requirements_txt = context.temp_dir.child("requirements.txt");
     requirements_txt.write_str("requests==1.2")?;
 
@@ -5596,7 +5597,7 @@ fn compatible_build_constraint() -> Result<()> {
 
 #[test]
 fn sync_seed() -> Result<()> {
-    let context = TestContext::new("3.8");
+    let context = TestContext::new("3.9");
 
     let requirements_txt = context.temp_dir.child("requirements.txt");
     requirements_txt.write_str("requests==1.2")?;
@@ -5618,7 +5619,7 @@ fn sync_seed() -> Result<()> {
 
     // Syncing should remove the seed packages.
     uv_snapshot!(context.filters(), context.pip_sync()
-        .arg("requirements.txt"), @r###"
+        .arg("requirements.txt"), @r"
     success: true
     exit_code: 0
     ----- stdout -----
@@ -5630,29 +5631,29 @@ fn sync_seed() -> Result<()> {
     Installed 1 package in [TIME]
      - pip==24.0
      + requests==1.2.0
-    "###
+    "
     );
 
     // Re-create the environment with seed packages.
     uv_snapshot!(context.filters(), context.venv()
-        .arg("--seed"), @r###"
+        .arg("--seed"), @r"
     success: true
     exit_code: 0
     ----- stdout -----
 
     ----- stderr -----
-    Using CPython 3.8.[X] interpreter at: [PYTHON-3.8]
+    Using CPython 3.9.[X] interpreter at: [PYTHON-3.9]
     Creating virtual environment with seed packages at: .venv
      + pip==24.0
      + setuptools==69.2.0
      + wheel==0.43.0
     Activate with: source .venv/[BIN]/activate
-    "###
+    "
     );
 
     // Syncing should retain the seed packages.
     uv_snapshot!(context.filters(), context.pip_sync()
-        .arg("requirements.txt"), @r###"
+        .arg("requirements.txt"), @r"
     success: true
     exit_code: 0
     ----- stdout -----
@@ -5661,7 +5662,7 @@ fn sync_seed() -> Result<()> {
     Resolved 1 package in [TIME]
     Installed 1 package in [TIME]
      + requests==1.2.0
-    "###
+    "
     );
 
     Ok(())

crates/uv/tests/it/python_find.rs

@@ -750,24 +750,24 @@ fn python_required_python_major_minor() {
         .unwrap();
 
     // Find `python3.11`, which is `>=3.11.4`.
-    uv_snapshot!(context.filters(), context.python_find().arg(">=3.11.4, <3.12").env(EnvVars::UV_TEST_PYTHON_PATH, context.temp_dir.child("child").path()), @r###"
+    uv_snapshot!(context.filters(), context.python_find().arg(">=3.11.4, <3.12").env(EnvVars::UV_TEST_PYTHON_PATH, context.temp_dir.child("child").path()), @r"
     success: true
     exit_code: 0
     ----- stdout -----
     [TEMP_DIR]/child/python3.11
 
     ----- stderr -----
-    "###);
+    ");
 
     // Find `python3.11`, which is `>3.11.4`.
-    uv_snapshot!(context.filters(), context.python_find().arg(">3.11.4, <3.12").env(EnvVars::UV_TEST_PYTHON_PATH, context.temp_dir.child("child").path()), @r###"
+    uv_snapshot!(context.filters(), context.python_find().arg(">3.11.4, <3.12").env(EnvVars::UV_TEST_PYTHON_PATH, context.temp_dir.child("child").path()), @r"
     success: true
     exit_code: 0
     ----- stdout -----
     [TEMP_DIR]/child/python3.11
 
     ----- stderr -----
-    "###);
+    ");
 
     // Fail to find any matching Python interpreter.
     uv_snapshot!(context.filters(), context.python_find().arg(">3.11.255, <3.12").env(EnvVars::UV_TEST_PYTHON_PATH, context.temp_dir.child("child").path()), @r###"

crates/uv/tests/it/run.rs

@@ -15,7 +15,7 @@ use crate::common::{TestContext, uv_snapshot};
 
 #[test]
 fn run_with_python_version() -> Result<()> {
-    let context = TestContext::new_with_versions(&["3.12", "3.11", "3.8"]);
+    let context = TestContext::new_with_versions(&["3.12", "3.11", "3.9"]);
 
     let pyproject_toml = context.temp_dir.child("pyproject.toml");
     pyproject_toml.write_str(indoc! { r#"
@@ -116,25 +116,25 @@ fn run_with_python_version() -> Result<()> {
      + sniffio==1.3.1
     "###);
 
-    // This time, we target Python 3.8 instead.
+    // This time, we target Python 3.9 instead.
     let mut command = context.run();
     let command_with_args = command
         .arg("-p")
-        .arg("3.8")
+        .arg("3.9")
         .arg("python")
         .arg("-B")
         .arg("main.py")
         .env_remove(EnvVars::VIRTUAL_ENV);
 
-    uv_snapshot!(context.filters(), command_with_args, @r###"
+    uv_snapshot!(context.filters(), command_with_args, @r"
     success: false
     exit_code: 2
     ----- stdout -----
 
     ----- stderr -----
-    Using CPython 3.8.[X] interpreter at: [PYTHON-3.8]
+    Using CPython 3.9.[X] interpreter at: [PYTHON-3.9]
-    error: The requested interpreter resolved to Python 3.8.[X], which is incompatible with the project's Python requirement: `>=3.11, <4`
+    error: The requested interpreter resolved to Python 3.9.[X], which is incompatible with the project's Python requirement: `>=3.11, <4`
-    "###);
+    ");
 
     Ok(())
 }
@@ -145,7 +145,7 @@ fn run_args() -> Result<()> {
 
     let mut filters = context.filters();
     filters.push((r"Usage: (uv|\.exe) run \[OPTIONS\] (?s).*", "[UV RUN HELP]"));
-    filters.push((r"usage: (\[VENV\]|\[PYTHON-3.12\])(?s).*", "[PYTHON HELP]"));
+    filters.push((r"usage: .*(\n|.*)*", "usage: [PYTHON HELP]"));
 
     let pyproject_toml = context.temp_dir.child("pyproject.toml");
     pyproject_toml.write_str(indoc! { r#"
@@ -176,7 +176,7 @@ fn run_args() -> Result<()> {
     success: true
     exit_code: 0
     ----- stdout -----
-    [PYTHON HELP]
+    usage: [PYTHON HELP]
     ");
 
     // Can use `--` to separate uv arguments from the command arguments.
@@ -475,11 +475,11 @@ fn run_pep723_script() -> Result<()> {
 
 #[test]
 fn run_pep723_script_requires_python() -> Result<()> {
-    let context = TestContext::new_with_versions(&["3.8", "3.11"]);
+    let context = TestContext::new_with_versions(&["3.9", "3.11"]);
 
     // If we have a `.python-version` that's incompatible with the script, we should error.
     let python_version = context.temp_dir.child(PYTHON_VERSION_FILENAME);
-    python_version.write_str("3.8")?;
+    python_version.write_str("3.9")?;
 
     // If the script contains a PEP 723 tag, we should install its requirements.
     let test_script = context.temp_dir.child("main.py");
@@ -498,22 +498,22 @@ fn run_pep723_script_requires_python() -> Result<()> {
        "#
     })?;
 
-    uv_snapshot!(context.filters(), context.run().arg("main.py"), @r###"
+    uv_snapshot!(context.filters(), context.run().arg("main.py"), @r#"
     success: false
     exit_code: 1
     ----- stdout -----
 
     ----- stderr -----
-    warning: The Python request from `.python-version` resolved to Python 3.8.[X], which is incompatible with the script's Python requirement: `>=3.11`
+    warning: The Python request from `.python-version` resolved to Python 3.9.[X], which is incompatible with the script's Python requirement: `>=3.11`
     Resolved 1 package in [TIME]
     Prepared 1 package in [TIME]
     Installed 1 package in [TIME]
      + iniconfig==2.0.0
     Traceback (most recent call last):
-      File "main.py", line 10, in <module>
+      File "[TEMP_DIR]/main.py", line 10, in <module>
         x: str | int = "hello"
     TypeError: unsupported operand type(s) for |: 'type' and 'type'
-    "###);
+    "#);
 
     // Delete the `.python-version` file to allow the script to run.
     fs_err::remove_file(&python_version)?;
@@ -765,14 +765,14 @@ fn run_pep723_script_overrides() -> Result<()> {
 /// Run a PEP 723-compatible script with `tool.uv` build constraints.
 #[test]
 fn run_pep723_script_build_constraints() -> Result<()> {
-    let context = TestContext::new("3.8");
+    let context = TestContext::new("3.9");
 
     let test_script = context.temp_dir.child("main.py");
 
     // Incompatible build constraints.
     test_script.write_str(indoc! { r#"
         # /// script
-        # requires-python = ">=3.8"
+        # requires-python = ">=3.9"
         # dependencies = [
         #   "anyio>=3",
         #   "requests==1.2"
@@ -801,7 +801,7 @@ fn run_pep723_script_build_constraints() -> Result<()> {
     // Compatible build constraints.
     test_script.write_str(indoc! { r#"
         # /// script
-        # requires-python = ">=3.8"
+        # requires-python = ">=3.9"
         # dependencies = [
         #   "anyio>=3",
         #   "requests==1.2"
@@ -1322,14 +1322,14 @@ fn run_with_pyvenv_cfg_file() -> Result<()> {
 
 #[test]
 fn run_with_build_constraints() -> Result<()> {
-    let context = TestContext::new("3.8");
+    let context = TestContext::new("3.9");
 
     let pyproject_toml = context.temp_dir.child("pyproject.toml");
     pyproject_toml.write_str(indoc! { r#"
         [project]
         name = "foo"
         version = "1.0.0"
-        requires-python = ">=3.8"
+        requires-python = ">=3.9"
         dependencies = ["anyio"]
 
         [tool.uv]
@@ -1370,7 +1370,7 @@ fn run_with_build_constraints() -> Result<()> {
         [project]
         name = "foo"
         version = "1.0.0"
-        requires-python = ">=3.8"
+        requires-python = ">=3.9"
         dependencies = ["anyio"]
 
         [tool.uv]
@@ -3107,7 +3107,7 @@ fn run_project_toml_error() -> Result<()> {
 
 #[test]
 fn run_isolated_incompatible_python() -> Result<()> {
-    let context = TestContext::new_with_versions(&["3.8", "3.11"]);
+    let context = TestContext::new_with_versions(&["3.9", "3.11"]);
 
     let pyproject_toml = context.temp_dir.child("pyproject.toml");
     pyproject_toml.write_str(indoc! { r#"
@@ -3124,7 +3124,7 @@ fn run_isolated_incompatible_python() -> Result<()> {
     })?;
 
     let python_version = context.temp_dir.child(PYTHON_VERSION_FILENAME);
-    python_version.write_str("3.8")?;
+    python_version.write_str("3.9")?;
 
     let test_script = context.temp_dir.child("main.py");
     test_script.write_str(indoc! { r#"
@@ -3135,15 +3135,15 @@ fn run_isolated_incompatible_python() -> Result<()> {
        "#
     })?;
 
-    // We should reject Python 3.8...
+    // We should reject Python 3.9...
     uv_snapshot!(context.filters(), context.run().arg("main.py"), @r###"
     success: false
     exit_code: 2
     ----- stdout -----
 
     ----- stderr -----
-    Using CPython 3.8.[X] interpreter at: [PYTHON-3.8]
+    Using CPython 3.9.[X] interpreter at: [PYTHON-3.9]
-    error: The Python request from `.python-version` resolved to Python 3.8.[X], which is incompatible with the project's Python requirement: `>=3.12`. Use `uv python pin` to update the `.python-version` file to a compatible version.
+    error: The Python request from `.python-version` resolved to Python 3.9.[X], which is incompatible with the project's Python requirement: `>=3.12`. Use `uv python pin` to update the `.python-version` file to a compatible version.
     "###);
 
     // ...even if `--isolated` is provided.
@@ -3153,7 +3153,7 @@ fn run_isolated_incompatible_python() -> Result<()> {
     ----- stdout -----
 
     ----- stderr -----
-    error: The Python request from `.python-version` resolved to Python 3.8.[X], which is incompatible with the project's Python requirement: `>=3.12`. Use `uv python pin` to update the `.python-version` file to a compatible version.
+    error: The Python request from `.python-version` resolved to Python 3.9.[X], which is incompatible with the project's Python requirement: `>=3.12`. Use `uv python pin` to update the `.python-version` file to a compatible version.
     "###);
 
     Ok(())
@@ -3685,7 +3685,7 @@ fn run_linked_environment_path() -> Result<()> {
     uv_snapshot!(context.filters(), context.run()
         .env_remove("VIRTUAL_ENV")  // Ignore the test context's active virtual environment
         .env(EnvVars::UV_PROJECT_ENVIRONMENT, "target")
-        .arg("python").arg("-c").arg("import sys; print(sys.prefix); print(sys.executable)"), @r###"
+        .arg("python").arg("-c").arg("import sys; print(sys.prefix); print(sys.executable)"), @r"
     success: true
     exit_code: 0
     ----- stdout -----
@@ -3695,7 +3695,7 @@ fn run_linked_environment_path() -> Result<()> {
     ----- stderr -----
     Resolved 8 packages in [TIME]
     Audited 6 packages in [TIME]
-    "###);
+    ");
 
     // And, similarly, the entrypoint should use `target`
     let black_entrypoint = context.read("target/bin/black");
@@ -3703,7 +3703,7 @@ fn run_linked_environment_path() -> Result<()> {
         filters => context.filters(),
     }, {
         assert_snapshot!(
-            black_entrypoint, @r###"
+            black_entrypoint, @r##"
         #![TEMP_DIR]/target/[BIN]/python
         # -*- coding: utf-8 -*-
         import sys
@@ -3714,7 +3714,7 @@ fn run_linked_environment_path() -> Result<()> {
             elif sys.argv[0].endswith(".exe"):
                 sys.argv[0] = sys.argv[0][:-4]
             sys.exit(patched_main())
-        "###
+        "##
         );
     });
 
@@ -5193,7 +5193,7 @@ fn run_pep723_script_with_constraints() -> Result<()> {
 
 #[test]
 fn run_no_sync_incompatible_python() -> Result<()> {
-    let context = TestContext::new_with_versions(&["3.12", "3.11", "3.8"]);
+    let context = TestContext::new_with_versions(&["3.12", "3.11", "3.9"]);
 
     let pyproject_toml = context.temp_dir.child("pyproject.toml");
     pyproject_toml.write_str(indoc! { r#"
@@ -5229,14 +5229,14 @@ fn run_no_sync_incompatible_python() -> Result<()> {
      + iniconfig==2.0.0
     ");
 
-    uv_snapshot!(context.filters(), context.run().arg("--no-sync").arg("--python").arg("3.8").arg("main.py"), @r"
+    uv_snapshot!(context.filters(), context.run().arg("--no-sync").arg("--python").arg("3.9").arg("main.py"), @r"
     success: true
     exit_code: 0
     ----- stdout -----
     Hello, world!
 
     ----- stderr -----
-    warning: Using incompatible environment (`.venv`) due to `--no-sync` (The project environment's Python version does not satisfy the request: `Python 3.8`)
+    warning: Using incompatible environment (`.venv`) due to `--no-sync` (The project environment's Python version does not satisfy the request: `Python 3.9`)
     ");
 
     Ok(())

crates/uv/tests/it/sync.rs

@@ -270,7 +270,7 @@ fn package() -> Result<()> {
 /// Ensure that we use the maximum Python version when a workspace contains mixed requirements.
 #[test]
 fn mixed_requires_python() -> Result<()> {
-    let context = TestContext::new_with_versions(&["3.8", "3.12"]);
+    let context = TestContext::new_with_versions(&["3.9", "3.12"]);
 
     // Create a workspace root with a minimum Python requirement of Python 3.12.
     let pyproject_toml = context.temp_dir.child("pyproject.toml");
@@ -296,7 +296,7 @@ fn mixed_requires_python() -> Result<()> {
     let init = src.child("__init__.py");
     init.touch()?;
 
-    // Create a child with a minimum Python requirement of Python 3.8.
+    // Create a child with a minimum Python requirement of Python 3.9.
     let child = context.temp_dir.child("packages").child("bird-feeder");
     child.create_dir_all()?;
 
@@ -312,7 +312,7 @@ fn mixed_requires_python() -> Result<()> {
         [project]
         name = "bird-feeder"
         version = "0.1.0"
-        requires-python = ">=3.8"
+        requires-python = ">=3.9"
 
         [build-system]
         requires = ["setuptools>=42"]
@@ -339,15 +339,15 @@ fn mixed_requires_python() -> Result<()> {
     "###);
 
     // Running `uv sync` again should fail.
-    uv_snapshot!(context.filters(), context.sync().arg("-p").arg("3.8"), @r###"
+    uv_snapshot!(context.filters(), context.sync().arg("-p").arg("3.9"), @r"
     success: false
     exit_code: 2
     ----- stdout -----
 
     ----- stderr -----
-    Using CPython 3.8.[X] interpreter at: [PYTHON-3.8]
+    Using CPython 3.9.[X] interpreter at: [PYTHON-3.9]
-    error: The requested interpreter resolved to Python 3.8.[X], which is incompatible with the project's Python requirement: `>=3.12`. However, a workspace member (`bird-feeder`) supports Python >=3.8. To install the workspace member on its own, navigate to `packages/bird-feeder`, then run `uv venv --python 3.8.[X]` followed by `uv pip install -e .`.
+    error: The requested interpreter resolved to Python 3.9.[X], which is incompatible with the project's Python requirement: `>=3.12`. However, a workspace member (`bird-feeder`) supports Python >=3.9. To install the workspace member on its own, navigate to `packages/bird-feeder`, then run `uv venv --python 3.9.[X]` followed by `uv pip install -e .`.
-    "###);
+    ");
 
     Ok(())
 }
@@ -8401,14 +8401,14 @@ fn sync_locked_script() -> Result<()> {
 
 #[test]
 fn sync_script_with_compatible_build_constraints() -> Result<()> {
-    let context = TestContext::new("3.8");
+    let context = TestContext::new("3.9");
 
     let test_script = context.temp_dir.child("script.py");
 
     // Compatible build constraints.
     test_script.write_str(indoc! { r#"
         # /// script
-        # requires-python = ">=3.8"
+        # requires-python = ">=3.9"
         # dependencies = [
         #   "anyio>=3",
         #   "requests==1.2"
@@ -8454,7 +8454,7 @@ fn sync_script_with_compatible_build_constraints() -> Result<()> {
 
 #[test]
 fn sync_script_with_incompatible_build_constraints() -> Result<()> {
-    let context = TestContext::new("3.8");
+    let context = TestContext::new("3.9");
 
     let test_script = context.temp_dir.child("script.py");
     let filters = context
@@ -8469,7 +8469,7 @@ fn sync_script_with_incompatible_build_constraints() -> Result<()> {
     // Incompatible build constraints.
     test_script.write_str(indoc! { r#"
         # /// script
-        # requires-python = ">=3.8"
+        # requires-python = ">=3.9"
         # dependencies = [
         #   "anyio>=3",
         #   "requests==1.2"

crates/uv/tests/it/tool_install.rs

@@ -326,7 +326,7 @@ fn tool_install_with_editable() -> Result<()> {
 
 #[test]
 fn tool_install_with_compatible_build_constraints() -> Result<()> {
-    let context = TestContext::new("3.8")
+    let context = TestContext::new("3.9")
         .with_exclude_newer("2024-05-04T00:00:00Z")
         .with_filtered_counts()
         .with_filtered_exe_suffix();
@@ -344,7 +344,7 @@ fn tool_install_with_compatible_build_constraints() -> Result<()> {
         .arg("build_constraints.txt")
         .env(EnvVars::UV_TOOL_DIR, tool_dir.as_os_str())
         .env(EnvVars::XDG_BIN_HOME, bin_dir.as_os_str())
-        .env(EnvVars::PATH, bin_dir.as_os_str()), @r###"
+        .env(EnvVars::PATH, bin_dir.as_os_str()), @r"
     success: true
     exit_code: 0
     ----- stdout -----
@@ -363,7 +363,7 @@ fn tool_install_with_compatible_build_constraints() -> Result<()> {
      + tomli==2.0.1
      + typing-extensions==4.11.0
     Installed 2 executables: black, blackd
-    "###);
+    ");
 
     tool_dir
         .child("black")
@@ -396,7 +396,7 @@ fn tool_install_with_compatible_build_constraints() -> Result<()> {
 
 #[test]
 fn tool_install_with_incompatible_build_constraints() -> Result<()> {
-    let context = TestContext::new("3.8")
+    let context = TestContext::new("3.9")
         .with_exclude_newer("2024-05-04T00:00:00Z")
         .with_filtered_counts()
         .with_filtered_exe_suffix();
@@ -414,7 +414,7 @@ fn tool_install_with_incompatible_build_constraints() -> Result<()> {
         .arg("build_constraints.txt")
         .env(EnvVars::UV_TOOL_DIR, tool_dir.as_os_str())
         .env(EnvVars::XDG_BIN_HOME, bin_dir.as_os_str())
-        .env(EnvVars::PATH, bin_dir.as_os_str()), @r###"
+        .env(EnvVars::PATH, bin_dir.as_os_str()), @r"
     success: false
     exit_code: 1
     ----- stdout -----
@@ -425,7 +425,7 @@ fn tool_install_with_incompatible_build_constraints() -> Result<()> {
       ├─▶ Failed to resolve requirements from `setup.py` build
       ├─▶ No solution found when resolving: `setuptools>=40.8.0`
       ╰─▶ Because you require setuptools>=40.8.0 and setuptools==2, we can conclude that your requirements are unsatisfiable.
-    "###);
+    ");
 
     tool_dir
         .child("black")

crates/uv/tests/it/tool_run.rs

@@ -2348,7 +2348,7 @@ fn tool_run_with_script_and_from_script() {
 
 #[test]
 fn tool_run_with_compatible_build_constraints() -> Result<()> {
-    let context = TestContext::new("3.8")
+    let context = TestContext::new("3.9")
         .with_exclude_newer("2024-05-04T00:00:00Z")
         .with_filtered_counts()
         .with_filtered_exe_suffix();
@@ -2361,7 +2361,7 @@ fn tool_run_with_compatible_build_constraints() -> Result<()> {
         .arg("--build-constraints")
         .arg("build_constraints.txt")
         .arg("pytest")
-        .arg("--version"), @r###"
+        .arg("--version"), @r"
     success: true
     exit_code: 0
     ----- stdout -----
@@ -2378,14 +2378,14 @@ fn tool_run_with_compatible_build_constraints() -> Result<()> {
      + pytest==8.2.0
      + requests==1.2.0
      + tomli==2.0.1
-    "###);
+    ");
 
     Ok(())
 }
 
 #[test]
 fn tool_run_with_incompatible_build_constraints() -> Result<()> {
-    let context = TestContext::new("3.8")
+    let context = TestContext::new("3.9")
         .with_exclude_newer("2024-05-04T00:00:00Z")
         .with_filtered_counts()
         .with_filtered_exe_suffix();
@@ -2404,7 +2404,7 @@ fn tool_run_with_incompatible_build_constraints() -> Result<()> {
         .arg("--version")
         .env(EnvVars::UV_TOOL_DIR, tool_dir.as_os_str())
         .env(EnvVars::XDG_BIN_HOME, bin_dir.as_os_str())
-        .env(EnvVars::PATH, bin_dir.as_os_str()), @r###"
+        .env(EnvVars::PATH, bin_dir.as_os_str()), @r"
     success: false
     exit_code: 1
     ----- stdout -----
@@ -2415,7 +2415,7 @@ fn tool_run_with_incompatible_build_constraints() -> Result<()> {
       ├─▶ Failed to resolve requirements from `setup.py` build
       ├─▶ No solution found when resolving: `setuptools>=40.8.0`
       ╰─▶ Because you require setuptools>=40.8.0 and setuptools==2, we can conclude that your requirements are unsatisfiable.
-    "###);
+    ");
 
     Ok(())
 }

crates/uv/tests/it/venv.rs

@@ -875,27 +875,27 @@ fn non_empty_dir_exists_allow_existing() -> Result<()> {
 #[test]
 #[cfg(windows)]
 fn windows_shims() -> Result<()> {
-    let context = TestContext::new_with_versions(&["3.9", "3.8"]);
+    let context = TestContext::new_with_versions(&["3.10", "3.9"]);
     let shim_path = context.temp_dir.child("shim");
 
-    let py38 = context
+    let py39 = context
         .python_versions
         .last()
         .expect("python_path_with_versions to set up the python versions");
 
-    // We want 3.8 and the first version should be 3.9.
+    // We want 3.9 and the first version should be 3.10.
     // Picking the last is necessary to prove that shims work because the python version selects
     // the python version from the first path segment by default, so we take the last to prove it's not
     // returning that version.
-    assert!(py38.0.to_string().contains("3.8"));
+    assert!(py39.0.to_string().contains("3.9"));
 
-    // Write the shim script that forwards the arguments to the python3.8 installation.
+    // Write the shim script that forwards the arguments to the python3.9 installation.
     fs_err::create_dir(&shim_path)?;
     fs_err::write(
         shim_path.child("python.bat"),
         format!(
             "@echo off\r\n{}/python.exe %*",
-            py38.1.parent().unwrap().display()
+            py39.1.parent().unwrap().display()
         ),
     )?;
 
@@ -908,7 +908,7 @@ fn windows_shims() -> Result<()> {
     ----- stdout -----
 
     ----- stderr -----
-    Using CPython 3.8.[X] interpreter at: [PYTHON-3.8]
+    Using CPython 3.9.[X] interpreter at: [PYTHON-3.9]
     Creating virtual environment at: .venv
     Activate with: source .venv/[BIN]/activate
     "###