Revert 4bb2911

Use COVERAGE_RCFILE environment variable instead of --cov-config.
See pytest-dev/pytest-cov#557.

Author: skirpichev

.github/workflows/test.yml

@@ -18,6 +18,7 @@ jobs:
     runs-on: ubuntu-latest
     env:
       TERM: xterm
+      COVERAGE_RCFILE: pyproject.toml
     steps:
     - uses: actions/checkout@v3
       with:

pyproject.toml

@@ -127,14 +127,13 @@ doctest_optionflags = ['ELLIPSIS', 'NORMALIZE_WHITESPACE',
                        'IGNORE_EXCEPTION_DETAIL']
 addopts = """\
           --durations=20 -r X --doctest-glob='*.rst' \
-          --cov-config=pyproject.toml -n auto \
+          -n auto \
           """
 norecursedirs = ['build', '.eggs', '.git']
 timeout = 1000
 xfail_strict = true
 filterwarnings = ['ignore::UserWarning',
-                  'error::DeprecationWarning',
-                  'ignore:The --rsyncdir command line argument and rsyncdirs config variable are deprecated.:DeprecationWarning']
+                  'error::DeprecationWarning']
 [tool.coverage.run]
 branch = true
 omit = ['conftest.py',