🧪 Use new tox4 setting names consistently

This fixes the mismatch when referencing settings from other sections
that might use different alias spellings.

Author: webknjaz

tox.ini

@@ -109,9 +109,9 @@ install_command =
     '{envname}' \
     '{toxinidir}{/}dependencies{/}' \
     install {opts} {packages}
-usedevelop = True
+use_develop = True
 
-passenv =
+pass_env =
   WEBTEST_INTERACTIVE
   CI
   TRAVIS
@@ -126,14 +126,14 @@ passenv =
   SSH_AUTH_SOCK
   GITHUB_*
   CODECOV_TOKEN
-setenv =
+set_env =
   CRYPTOGRAPHY_ALLOW_OPENSSL_102=x
   PYTHONDONTWRITEBYTECODE=x
   WEBTEST_INTERACTIVE=false
 
 
 [dists]
-setenv =
+set_env =
   PIP_CONSTRAINT = {toxinidir}{/}dependencies{/}dist-build-constraints.txt
   PEP517_OUT_DIR = {env:PEP517_OUT_DIR:{toxinidir}{/}dist}
 
@@ -142,7 +142,7 @@ setenv =
 allowlist_externals =
   git
 description = Build The Docs
-changedir = docs
+change_dir = docs
 commands_pre =
   # Retrieve possibly missing commits:
   -git fetch --unshallow
@@ -161,15 +161,15 @@ commands =
       -W --keep-going \
       -d "{temp_dir}{/}.doctrees" \
       . \
-      "{envdir}{/}docs_out"
+      "{env_dir}{/}docs_out"
 
   # Print out the output docs dir and a way to serve html:
   -{envpython} \
   {[python-cli-options]byte-errors} \
   {[python-cli-options]some-isolation} \
   -c\
   'import pathlib;\
-  docs_dir = pathlib.Path(r"{envdir}") / "docs_out";\
+  docs_dir = pathlib.Path(r"{env_dir}") / "docs_out";\
   index_file = docs_dir / "index.html";\
   print(f"\nDocumentation available under \
   `file://\{index_file\}`\n\nTo serve docs, use \
@@ -180,13 +180,13 @@ depends =
   make-changelog
 deps =
   -rdependencies{/}tox-docs.in
-envdir = {toxworkdir}/build-docs
+env_dir = {toxworkdir}/build-docs
 
 [testenv:doctest-docs]
 allowlist_externals =
   {[testenv:build-docs]allowlist_externals}
 description = Doctest The Docs
-changedir = {[testenv:build-docs]changedir}
+change_dir = {[testenv:build-docs]change_dir}
 commands_pre =
 commands =
   # Retrieve possibly missing commits:
@@ -207,13 +207,13 @@ commands =
 commands_post =
 deps =
   -rdependencies{/}tox-doctest-docs.in
-envdir = {[testenv:build-docs]envdir}
+env_dir = {[testenv:build-docs]env_dir}
 
 [testenv:linkcheck-docs]
 allowlist_externals =
   {[testenv:build-docs]allowlist_externals}
 description = Linkcheck The Docs
-changedir = {[testenv:build-docs]changedir}
+change_dir = {[testenv:build-docs]change_dir}
 commands_pre =
 commands =
   # Retrieve possibly missing commits:
@@ -234,13 +234,13 @@ commands =
 commands_post =
 deps =
   -rdependencies{/}tox-docs-linkcheck.in
-envdir = {[testenv:build-docs]envdir}
+env_dir = {[testenv:build-docs]env_dir}
 
 [testenv:spellcheck-docs]
 allowlist_externals =
   {[testenv:build-docs]allowlist_externals}
 description = Spellcheck The Docs
-changedir = {[testenv:build-docs]changedir}
+change_dir = {[testenv:build-docs]change_dir}
 commands_pre =
 commands =
   # Retrieve possibly missing commits:
@@ -261,15 +261,15 @@ commands =
 commands_post =
 deps =
   -rdependencies{/}tox-docs-spellcheck.in
-envdir = {[testenv:build-docs]envdir}
+env_dir = {[testenv:build-docs]env_dir}
 
 [testenv:watch]
 commands = ptw --runner=pytest
 commands_post =
 
 
 [testenv:check-changelog]
-basepython = {[testenv:make-changelog]basepython}
+base_python = {[testenv:make-changelog]base_python}
 description =
   Check Towncrier change notes
 commands_pre =
@@ -282,21 +282,21 @@ commands =
 commands_post =
 deps =
   {[testenv:make-changelog]deps}
-envdir = {[testenv:make-changelog]envdir}
+env_dir = {[testenv:make-changelog]env_dir}
 isolated_build = {[testenv:make-changelog]isolated_build}
 skip_install = {[testenv:make-changelog]skip_install}
 
 
 [testenv:make-changelog]
-basepython = python3
+base_python = python3
 depends =
   check-changelog
 description =
   Generate a changelog from fragments using Towncrier. Getting an
   unreleased changelog preview does not require extra arguments.
   When invoking to update the changelog, pass the desired version as an
   argument after `--`. For example, `tox -e {envname} -- 1.3.2`.
-envdir = {[testenv:build-docs]envdir}
+env_dir = {[testenv:build-docs]env_dir}
 commands_pre =
 commands =
   {envpython} \
@@ -321,7 +321,7 @@ skip_install = true
 [testenv:draft-changelog]
 allowlist_externals =
   sh
-basepython = {[testenv:make-changelog]basepython}
+base_python = {[testenv:make-changelog]base_python}
 description =
   Print out the Towncrier-managed change notes
   draft for the next release to stdout
@@ -338,7 +338,7 @@ commands =
       --version '[UNRELEASED DRAFT]' \
       --draft"
 commands_post =
-envdir = {[testenv:make-changelog]envdir}
+env_dir = {[testenv:make-changelog]env_dir}
 deps =
   {[testenv:make-changelog]deps}
 isolated_build = {[testenv:make-changelog]isolated_build}
@@ -348,11 +348,11 @@ skip_install = {[testenv:make-changelog]skip_install}
 [testenv:cleanup-dists]
 description =
   Wipe the the dist{/} folder
-usedevelop = false
+use_develop = false
 skip_install = true
 deps =
-setenv =
-  {[dists]setenv}
+set_env =
+  {[dists]set_env}
 commands_pre =
 commands =
   {envpython} \
@@ -384,15 +384,15 @@ install_command =
     '{toxinidir}{/}dependencies{/}' \
     install {opts} {packages}
 isolated_build = true
-# `usedevelop = true` overrides `skip_install` instruction, it's unwanted
-usedevelop = false
+# `use_develop = true` overrides `skip_install` instruction, it's unwanted
+use_develop = false
 skip_install = true
 deps =
   -rdependencies{/}tox-build-dists.in
-passenv =
+pass_env =
   PEP517_BUILD_ARGS
-setenv =
-  {[dists]setenv}
+set_env =
+  {[dists]set_env}
 commands_pre =
 commands =
   # Starting with build v0.5.0, it builds wheel from sdist
@@ -411,7 +411,7 @@ commands_post =
 
 [testenv:pre-commit]
 description =
-  Run the quality checks under {basepython}; run as
+  Run the quality checks under {base_python}; run as
   `SKIP=check-id1,check-id2 tox r -e pre-commit` to instruct the underlying
   `pre-commit` invocation avoid running said checks; Use
   `tox r -e pre-commit -- check-id1 --all-files` to select checks matching IDs
@@ -541,15 +541,15 @@ depends =
 deps =
   setuptools-scm
   twine
-usedevelop = false
+use_develop = false
 skip_install = true
 commands_pre =
   {envpython} \
     {[python-cli-options]byte-errors} \
     {[python-cli-options]some-isolation} \
     -m setuptools_scm ls
-setenv =
-  {[dists]setenv}
+set_env =
+  {[dists]set_env}
 commands =
   {envpython} \
     {[python-cli-options]byte-errors} \
@@ -565,9 +565,9 @@ deps =
   pep517>=0.5
   twine>=1.13
   path.py
-passenv =
+pass_env =
   TWINE_PASSWORD
-setenv =
+set_env =
   TWINE_USERNAME = {env:TWINE_USERNAME:__token__}
 commands_pre =
 commands =