Revert "Fix transparent Python upgrades in project environments"

crates/uv-virtualenv/src/virtualenv.rs

@@ -528,11 +528,7 @@ pub(crate) fn create(
         ("uv".to_string(), version().to_string()),
         (
             "version_info".to_string(),
-            if using_minor_version_link {
-                interpreter.python_minor_version().to_string()
-            } else {
-                interpreter.markers().python_full_version().string.clone()
-            },
+            interpreter.markers().python_full_version().string.clone(),
         ),
         (
             "include-system-site-packages".to_string(),

crates/uv/tests/python/python_upgrade.rs

@@ -2,7 +2,6 @@ use anyhow::Result;
 use assert_cmd::assert::OutputAssertExt;
 use assert_fs::fixture::{FileTouch, FileWriteStr};
 use assert_fs::prelude::PathChild;
-use insta::assert_snapshot;
 use uv_python::managed::platform_key_from_env;
 use uv_static::EnvVars;
 use uv_test::{LATEST_PYTHON_3_12, uv_snapshot};
@@ -840,73 +839,6 @@ fn python_upgrade_build_version() {
     ");
 }
 
-// A project environment should survive a transparent Python patch upgrade.
-#[test]
-fn python_sync_transparent_patch_upgrade_reuses_environment() -> Result<()> {
-    let context = uv_test::test_context_with_versions!(&[])
-        .with_python_download_cache()
-        .with_filtered_python_keys()
-        .with_filtered_exe_suffix()
-        .with_managed_python_dirs()
-        .with_filtered_latest_python_versions()
-        .with_pyvenv_cfg_filters();
-
-    context.temp_dir.child("pyproject.toml").write_str(
-        r#"
-        [project]
-        name = "project"
-        version = "0.1.0"
-        requires-python = ">=3.10"
-        "#,
-    )?;
-
-    context.python_install().arg("3.10.17").assert().success();
-    context
-        .sync()
-        .arg("--python")
-        .arg("3.10")
-        .assert()
-        .success();
-
-    // The minor-only `version_info` allows compatibility checks to accept a newer patch.
-    let pyvenv_cfg = fs_err::read_to_string(context.venv.child("pyvenv.cfg"))?;
-    insta::with_settings!({ filters => context.filters() }, {
-        assert_snapshot!(pyvenv_cfg, @r"
-        home = [PYTHON_HOME]
-        implementation = CPython
-        uv = [UV_VERSION]
-        version_info = 3.10
-        include-system-site-packages = false
-        prompt = project
-        ");
-    });
-
-    context.python_upgrade().arg("3.10").assert().success();
-
-    // The sync should not report removing or creating the environment.
-    uv_snapshot!(context.filters(), context.sync().arg("--python").arg("3.10"), @r"
-    success: true
-    exit_code: 0
-    ----- stdout -----
-
-    ----- stderr -----
-    Resolved 1 package in [TIME]
-    Checked in [TIME]
-    ");
-
-    // The reused environment should run the upgraded Python patch.
-    uv_snapshot!(context.filters(), context.python_command().arg("--version"), @r"
-    success: true
-    exit_code: 0
-    ----- stdout -----
-    Python 3.10.[LATEST]
-
-    ----- stderr -----
-    ");
-
-    Ok(())
-}
-
 // Regression test for <https://github.com/astral-sh/uv/issues/19100>.
 //
 // A virtual environment created by `uv sync` should pin to a patch version
@@ -920,8 +852,7 @@ fn python_sync_honors_pinned_patch_version() -> Result<()> {
         .with_filtered_python_keys()
         .with_filtered_exe_suffix()
         .with_managed_python_dirs()
-        .with_filtered_latest_python_versions()
-        .with_pyvenv_cfg_filters();
+        .with_filtered_latest_python_versions();
 
     let pyproject_toml = context.temp_dir.child("pyproject.toml");
     pyproject_toml.write_str(
@@ -967,19 +898,6 @@ fn python_sync_honors_pinned_patch_version() -> Result<()> {
     Checked in [TIME]
     ");
 
-    // An exact-patch environment must retain the patch in `version_info`.
-    let pyvenv_cfg = fs_err::read_to_string(context.venv.child("pyvenv.cfg"))?;
-    insta::with_settings!({ filters => context.filters() }, {
-        assert_snapshot!(pyvenv_cfg, @r"
-        home = [PYTHON_HOME]
-        implementation = CPython
-        uv = [UV_VERSION]
-        version_info = 3.10.17
-        include-system-site-packages = false
-        prompt = project
-        ");
-    });
-
     // Install a newer patch version, which moves the mutable `cpython-3.10`
     // minor-version link to the newer release.
     uv_snapshot!(context.filters(), context.python_upgrade().arg("3.10"), @r"