Drop support for Python 3.7

Installing on Python 3.7 no longer works due to lack of support in the
minimal version of setuptools_scm. This commit makes the change
official, but it happened a while ago.

CHANGELOG.rst

@@ -9,11 +9,12 @@ Package maintainers and users who have to manually update their installation
 may want to subscribe to `GitHub's tag feed
 <https://github.com/pimutils/vdirsyncer/tags.atom>`_.
 
-Version 0.19.4
+Version 0.20.0
 ==============
 
 - Remove dependency on abandoned ``atomicwrites`` library.
 - Implement ``filter_hook`` for the HTTP storage.
+- Drop support for Python 3.7.
 
 Version 0.19.3
 ==============

docs/installation.rst

@@ -42,7 +42,7 @@ If your distribution doesn't provide a package for vdirsyncer, you still can
 use Python's package manager "pip". First, you'll have to check that the
 following things are installed:
 
-- Python 3.7 to 3.11 and pip.
+- Python 3.8 to 3.11 and pip.
 - ``libxml`` and ``libxslt``
 - ``zlib``
 - Linux or macOS. **Windows is not supported**, see :gh:`535`.

pyproject.toml

@@ -26,7 +26,6 @@ classifiers = [
     "Programming Language :: Python :: 3.10",
     "Programming Language :: Python :: 3.11",
     "Programming Language :: Python :: 3.12",
-    "Programming Language :: Python :: 3.7",
     "Programming Language :: Python :: 3.8",
     "Programming Language :: Python :: 3.9",
     "Topic :: Internet",
@@ -60,7 +59,6 @@ select = [
     # "TID",
     "RSE"
 ]
-target-version = "py37"
 
 [tool.ruff.isort]
 force-single-line = true

vdirsyncer/__init__.py

@@ -21,8 +21,8 @@ except ImportError:  # pragma: no cover
 def _check_python_version():
     import sys
 
-    if sys.version_info < (3, 7, 0):  # noqa: UP036
-        print("vdirsyncer requires at least Python 3.7.")
+    if sys.version_info < (3, 8, 0):  # noqa: UP036
+        print("vdirsyncer requires at least Python 3.8.")
         sys.exit(1)
 
 

vdirsyncer/utils.py

@@ -210,7 +210,7 @@ def open_graphical_browser(url, new=0, autoraise=True):
 
     cli_names = {"www-browser", "links", "links2", "elinks", "lynx", "w3m"}
 
-    if webbrowser._tryorder is None:  # Python 3.7
+    if webbrowser._tryorder is None:  # Python 3.8
         webbrowser.register_standard_browsers()
 
     for name in webbrowser._tryorder: