Drop Python 3.4 support (#2143)

.github/workflows/check.yml

@@ -34,7 +34,6 @@ jobs:
           - pypy2
         include:
           - { os: macos-latest, py: brew@py3 }
-          - { os: "ubuntu-18.04", py: 3.4.10 }
     steps:
       - name: Install OS dependencies
         run: |

docs/changelog/2141.removal.rst

@@ -0,0 +1 @@
+Drop python ``3.4`` support as it has been over 2 years since EOL - by :user:`gaborbernat`.

docs/installation.rst

@@ -88,8 +88,8 @@ Python and OS Compatibility
 
 virtualenv works with the following Python interpreter implementations:
 
-- `CPython <https://www.python.org/>`_ versions 2.7, 3.4, 3.5, 3.6, 3.7, 3.8, 3.9
-- `PyPy <https://pypy.org/>`_ 2.7 and 3.4+.
+- `CPython <https://www.python.org/>`_ versions 2.7, 3.5, 3.6, 3.7, 3.8, 3.9, 3.10
+- `PyPy <https://pypy.org/>`_ 2.7 and 3.5+.
 
 This means virtualenv works on the latest patch version of each of these minor versions. Previous patch versions are
 supported on a best effort approach.

docs/user_guide.rst

@@ -106,7 +106,7 @@ at the moment has two types of virtual environments:
 
 - ``venv`` - this delegates the creation process towards the ``venv`` module, as described in
   `PEP 405 <https://www.python.org/dev/peps/pep-0405>`_. This is only available on Python interpreters having version
-  ``3.4`` or later, and also has the downside that virtualenv **must** create a process to invoke that module (unless
+  ``3.5`` or later, and also has the downside that virtualenv **must** create a process to invoke that module (unless
   virtualenv is installed in the system python), which can be an expensive operation (especially true on Windows).
 
 - ``builtin`` - this means ``virtualenv`` is able to do the creation operation itself (by knowing exactly what files to

setup.cfg

@@ -21,7 +21,6 @@ classifiers =
     Programming Language :: Python :: 2
     Programming Language :: Python :: 2.7
     Programming Language :: Python :: 3
-    Programming Language :: Python :: 3.4
     Programming Language :: Python :: 3.5
     Programming Language :: Python :: 3.6
     Programming Language :: Python :: 3.7
@@ -48,7 +47,7 @@ install_requires =
     importlib-metadata>=0.12;python_version<"3.8"
     importlib-resources>=1.0;python_version<"3.7"
     pathlib2>=2.3.3,<3;python_version < '3.4' and sys.platform != 'win32'
-python_requires = >=2.7, !=3.0.*, !=3.1.*, !=3.2.*, !=3.3.*
+python_requires = >=2.7, !=3.0.*, !=3.1.*, !=3.2.*, !=3.3.*, !=3.4.*
 package_dir =
     =src
 zip_safe = True

src/virtualenv/discovery/cached_py_info.py

@@ -37,7 +37,7 @@ def from_exe(cls, app_data, exe, env=None, raise_on_error=True, ignore_cache=Fal
 
 def _get_from_cache(cls, app_data, exe, env, ignore_cache=True):
     # note here we cannot resolve symlinks, as the symlink may trigger different prefix information if there's a
-    # pyenv.cfg somewhere alongside on python3.4+
+    # pyenv.cfg somewhere alongside on python3.5+
     exe_path = Path(exe)
     if not ignore_cache and exe_path in _CACHE:  # check in the in-memory cache
         result = _CACHE[exe_path]

src/virtualenv/seed/wheels/embed/__init__.py

@@ -35,11 +35,6 @@
         "setuptools": "setuptools-50.3.2-py3-none-any.whl",
         "wheel": "wheel-0.36.2-py2.py3-none-any.whl",
     },
-    "3.4": {
-        "pip": "pip-19.1.1-py2.py3-none-any.whl",
-        "setuptools": "setuptools-43.0.0-py2.py3-none-any.whl",
-        "wheel": "wheel-0.33.6-py2.py3-none-any.whl",
-    },
     "2.7": {
         "pip": "pip-20.3.4-py2.py3-none-any.whl",
         "setuptools": "setuptools-44.1.1-py2.py3-none-any.whl",

src/virtualenv/util/path/_pathlib/__init__.py

@@ -6,52 +6,6 @@
 
 if six.PY3:
     from pathlib import Path
-
-    if sys.version_info[0:2] == (3, 4):
-        # no read/write text on python3.4
-        BuiltinPath = Path
-
-        class Path(type(BuiltinPath())):
-            def read_text(self, encoding=None, errors=None):
-                """
-                Open the file in text mode, read it, and close the file.
-                """
-                with self.open(mode="r", encoding=encoding, errors=errors) as f:
-                    return f.read()
-
-            def read_bytes(self):
-                """
-                Open the file in bytes mode, read it, and close the file.
-                """
-                with self.open(mode="rb") as f:
-                    return f.read()
-
-            def write_text(self, data, encoding=None, errors=None):
-                """
-                Open the file in text mode, write to it, and close the file.
-                """
-                if not isinstance(data, str):
-                    raise TypeError("data must be str, not %s" % data.__class__.__name__)
-                with self.open(mode="w", encoding=encoding, errors=errors) as f:
-                    return f.write(data)
-
-            def write_bytes(self, data):
-                """
-                Open the file in bytes mode, write to it, and close the file.
-                """
-                # type-check for the buffer interface before truncating the file
-                view = memoryview(data)
-                with self.open(mode="wb") as f:
-                    return f.write(view)
-
-            def mkdir(self, mode=0o777, parents=False, exist_ok=False):
-                try:
-                    super(type(BuiltinPath()), self).mkdir(mode, parents)
-                except FileExistsError as exception:
-                    if not exist_ok:
-                        raise exception
-
-
 else:
     if sys.platform == "win32":
         # workaround for https://github.com/mcmtroffaes/pathlib2/issues/56

tasks/make_zipapp.py

@@ -20,7 +20,7 @@
 
 HERE = Path(__file__).parent.absolute()
 
-VERSIONS = ["3.{}".format(i) for i in range(9, 3, -1)] + ["2.7"]
+VERSIONS = ["3.{}".format(i) for i in range(10, 4, -1)] + ["2.7"]
 
 
 def main():

tasks/upgrade_wheels.py

@@ -16,7 +16,7 @@
 STRICT = "UPGRADE_ADVISORY" not in os.environ
 
 BUNDLED = ["pip", "setuptools", "wheel"]
-SUPPORT = list(reversed([(2, 7)] + [(3, i) for i in range(4, 11)]))
+SUPPORT = list(reversed([(2, 7)] + [(3, i) for i in range(5, 11)]))
 DEST = Path(__file__).resolve().parents[1] / "src" / "virtualenv" / "seed" / "wheels" / "embed"
 
 

tests/unit/create/test_creator.py

@@ -129,8 +129,6 @@ def system(session_app_data):
     ids=lambda i: "-".join(i) if isinstance(i, tuple) else i,
 )
 def test_create_no_seed(python, creator, isolated, system, coverage_env, special_name_dir):
-    if creator[0] == "venv" and sys.version_info[0:2] == (3, 4):  # venv on python3.4 only supports ascii chars
-        special_name_dir = special_name_dir.with_name(special_name_dir.name.encode("ascii", errors="ignore").decode())
     dest = special_name_dir
     creator_key, method = creator
     cmd = [

tests/unit/seed/embed/test_pip_invoke.py

@@ -25,7 +25,7 @@ def test_base_bootstrap_via_pip_invoke(tmp_path, coverage_env, mocker, current_f
     def _load_embed_wheel(app_data, distribution, for_py_version, version):
         return load_embed_wheel(app_data, distribution, old_ver, version)
 
-    old_ver = "3.4"
+    old_ver = "2.7"
     old = BUNDLE_SUPPORT[old_ver]
     mocker.patch("virtualenv.seed.wheels.bundle.load_embed_wheel", side_effect=_load_embed_wheel)
 
@@ -36,7 +36,9 @@ def _execute(cmd, env):
                 continue
             if with_version == "embed":
                 expected.add(BUNDLE_FOLDER)
-            elif old[dist] != new[dist]:
+            elif old[distribution] == new[distribution]:
+                expected.add(BUNDLE_FOLDER)
+            else:
                 expected.add(extra_search_dir)
         expected_list = list(
             itertools.chain.from_iterable(["--find-links", str(e)] for e in sorted(expected, key=lambda x: str(x))),

tests/unit/seed/wheels/test_periodic_update.py

@@ -67,7 +67,7 @@ def _do_update(distribution, for_py_version, embed_filename, app_data, search_di
 
 
 def test_pick_periodic_update(tmp_path, session_app_data, mocker, for_py_version):
-    embed, current = get_embed_wheel("setuptools", "3.4"), get_embed_wheel("setuptools", for_py_version)
+    embed, current = get_embed_wheel("setuptools", "3.5"), get_embed_wheel("setuptools", for_py_version)
     mocker.patch("virtualenv.seed.wheels.bundle.load_embed_wheel", return_value=embed)
     completed = datetime.now() - timedelta(days=29)
     u_log = UpdateLog(

tox.ini

@@ -6,7 +6,6 @@ envlist =
     py37
     py36
     py35
-    py34
     py27
     pypy3
     pypy2
@@ -30,21 +29,22 @@ setenv =
     COVERAGE_PROCESS_START = {toxinidir}/.coveragerc
     PYTHONIOENCODING = utf-8
     _COVERAGE_SRC = {envsitepackagesdir}/virtualenv
-    {py34,py27,pypy2, upgrade}: PYTHONWARNINGS = ignore:DEPRECATION::pip._internal.cli.base_command
+    {py27,pypy2, upgrade}: PYTHONWARNINGS = ignore:DEPRECATION::pip._internal.cli.base_command
 extras =
     testing
 commands =
     python -m coverage erase
-    python -m coverage run -m pytest \
+    python -m coverage run -m pytest {tty:--color=yes} \
       --junitxml {toxworkdir}/junit.{envname}.xml \
       {posargs:tests --int --timeout 600}
     python -m coverage combine
     python -m coverage report --skip-covered --show-missing
     python -m coverage xml -o {toxworkdir}/coverage.{envname}.xml
-    python -m coverage html -d {envtmpdir}/htmlcov \
-      !py34: --show-contexts \
+    python -m coverage html -d {envtmpdir}/htmlcov --show-contexts \
       --title virtualenv-{envname}-coverage
 install_command = python -m pip install {opts} {packages} --disable-pip-version-check
+package = wheel
+wheel_build_env = .pkg
 
 [testenv:fix_lint]
 description = format the code base to adhere to our styles, and complain about what we cannot do automatically
@@ -83,7 +83,6 @@ depends =
     py37
     py36
     py35
-    py34
     py27
     pypy
     pypy3