Drop Python 3.7 support (reached EOL)

.python-version

@@ -1,5 +1,4 @@
 3.11
-3.7
 3.8
 3.9
 3.10

CHANGES.rst

@@ -41,6 +41,7 @@ New Features:
 
 Changed:
 
+* Support for Python 3.7 was dropped (end-of-life in Juny 2023)
 * `MyST <https://github.com/executablebooks/MyST-Parser>`_ replaces
   `recommonmark <https://github.com/readthedocs/recommonmark>`_ for Markdown
   support (issues #265 and #370)

README.rst

@@ -118,7 +118,7 @@ Syntax highlighting of code blocks is enabled if Pygments_ is installed, which
 will be installed automatically with Sphinx_. If you want to include images
 other than PDF, PNG or JPEG, you also need to install Pillow_.
 
-.. _end-of-life: https://devguide.python.org/#status-of-python-branches
+.. _end-of-life: https://devguide.python.org/versions/#versions
 .. _docutils: http://docutils.sourceforge.net/index.html
 .. _myst-parser: https://myst-parser.readthedocs.io
 .. _pip: https://pip.pypa.io

noxfile.py

@@ -18,7 +18,7 @@
                         f'regression-{CURRENT_PYTHON}(wheel)']
 
 
-PYTHONS = ['3.7', '3.8', '3.9', '3.10', '3.11', '3.12']
+PYTHONS = ['3.8', '3.9', '3.10', '3.11', '3.12']
 PYTHONS += ['pypy3'] if os.getenv('CI') else ['pypy3.9']
 
 DEPENDENCIES = ['pytest', 'pytest-xdist', 'pytest-cov', 'coverage', 'Sphinx']

pyproject.toml

@@ -84,10 +84,9 @@ times = "rinoh.fonts.adobe14:times"
 rinoh = "rinoh.frontend.sphinx"
 
 [tool.poetry.dependencies]
-python = "^3.7.0"
+python = "^3.8.0"
 appdirs = "^1.4.3"
 docutils = ">=0.15"
-importlib-metadata = {version = ">=0.21", python = "<3.8"}
 myst-parser = "^0.18.1"
 packaging = ">=14.0"
 rinoh-typeface-dejavuserif = "^0.1.3"
@@ -96,7 +95,7 @@ rinoh-typeface-texgyreheros = "^0.1.1"
 rinoh-typeface-texgyrepagella = "^0.1.1"
 Sphinx = { version = ">=2.2.1", optional = true }
 
-[tool.poetry.dev-dependencies]
+[tool.poetry.group.dev.dependencies]
 doc8 = "^1.0.0"
 nox = ">=2022.1.7"
 nox-poetry = "^1.0.1"