build, meta: drop Python 3.7 support, checks, and CI job

.github/workflows/ci.yml

@@ -20,7 +20,6 @@ jobs:
     strategy:
       matrix:
         python-version:
-          - "3.7"
           - "3.8"
           - "3.9"
           - "3.10"

README.rst

@@ -31,7 +31,7 @@ First, either clone the repository with ``git clone
 https://github.com/sopel-irc/sopel.git`` or download a tarball `from GitHub
 <https://github.com/sopel-irc/sopel/releases/latest>`_.
 
-Note: Sopel requires Python 3.7+ to run.
+Note: Sopel requires Python 3.8+ to run.
 
 In the source directory (whether cloned or from the tarball) run ``pip install
 -e .``. You can then run ``sopel`` to configure and start the bot.

pyproject.toml

@@ -35,14 +35,13 @@ classifiers = [
     "License :: Eiffel Forum License (EFL)",
     "License :: OSI Approved :: Eiffel Forum License",
     "Operating System :: POSIX :: Linux",
-    "Programming Language :: Python :: 3.7",
     "Programming Language :: Python :: 3.8",
     "Programming Language :: Python :: 3.9",
     "Programming Language :: Python :: 3.10",
     "Programming Language :: Python :: 3.11",
     "Topic :: Communications :: Chat :: Internet Relay Chat",
 ]
-requires-python = ">=3.7"
+requires-python = ">=3.8"
 dependencies = [
     "xmltodict>=0.12,<0.14",
     "pytz",

setup.cfg

@@ -16,7 +16,7 @@ ignore =
     # Sopel no longer supports Python versions that require them.
     FI58,
     # These would require future imports that are not needed any more on Sopel's
-    # oldest supported Python version (3.7).
+    # oldest supported Python version (3.8).
     FI10,FI11,FI12,FI13,FI14,FI15,FI16,FI17,
     # We use postponed annotation evaluation
     TC2,

sopel/cli/run.py

@@ -22,8 +22,8 @@
 # This is in case someone somehow manages to install Sopel on an old version
 # of pip (<9.0.0), which doesn't know about `python_requires`, or tries to run
 # from source on an unsupported version of Python.
-if sys.version_info < (3, 7):
-    utils.stderr('Error: Sopel requires Python 3.7+.')
+if sys.version_info < (3, 8):
+    utils.stderr('Error: Sopel requires Python 3.8+.')
     sys.exit(1)
 
 LOGGER = logging.getLogger(__name__)