Move isort config to `pyproject.toml` (#12052)

changelog.d/12052.misc

@@ -0,0 +1 @@
+Move `isort` configuration to `pyproject.toml`.

pyproject.toml

@@ -54,3 +54,15 @@ exclude = '''
   )/
 )
 '''
+
+[tool.isort]
+line_length = 88
+sections = ["FUTURE", "STDLIB", "THIRDPARTY", "TWISTED", "FIRSTPARTY", "TESTS", "LOCALFOLDER"]
+default_section = "THIRDPARTY"
+known_first_party = ["synapse"]
+known_tests = ["tests"]
+known_twisted = ["twisted", "OpenSSL"]
+multi_line_output = 3
+include_trailing_comma = true
+combine_as_imports = true
+

setup.cfg

@@ -19,14 +19,3 @@ ignore =
 #  E731: do not assign a lambda expression, use a def
 #  E501: Line too long (black enforces this for us)
 ignore=W503,W504,E203,E731,E501
-
-[isort]
-line_length = 88
-sections=FUTURE,STDLIB,THIRDPARTY,TWISTED,FIRSTPARTY,TESTS,LOCALFOLDER
-default_section=THIRDPARTY
-known_first_party = synapse
-known_tests=tests
-known_twisted=twisted,OpenSSL
-multi_line_output=3
-include_trailing_comma=true
-combine_as_imports=true

tox.ini

@@ -166,7 +166,7 @@ commands =
 
 [testenv:check_isort]
 extras = lint
-commands = isort -c --df --sp setup.cfg {[base]lint_targets}
+commands = isort -c --df {[base]lint_targets}
 
 [testenv:check-newsfragment]
 skip_install = true