move build dependencies to pyproject.toml

Author: dhellmann

pyproject.toml

@@ -40,6 +40,12 @@ dependencies = [
 linter = [
     "flake8",
 ]
+build = [
+    "build",
+    "twine",
+    "check-python-versions",
+]
+
 # https://github.com/pypa/setuptools_scm/
 [tool.setuptools_scm]
 write_to = "virtualenvwrapper/version.py"

tox.ini

@@ -38,10 +38,7 @@ commands =
     sphinx-build -W -j auto -b linkcheck -d docs/build/doctrees docs/source docs/build/linkcheck
 
 [testenv:pkglint]
-deps=
-    build
-    twine
-    check-python-versions
+deps=.[build]
 commands=
     python -m build
     twine check dist/*.tar.gz dist/*.whl