diff --git a/.vscode/extensions.json b/.vscode/extensions.json
index eeb4bd7..a69e387 100644
--- a/.vscode/extensions.json
+++ b/.vscode/extensions.json
@@ -15,6 +15,7 @@
         "KevinRose.vsc-python-indent",
         "lextudio.restructuredtext",
         "ms-python.black-formatter",
+        "ms-python.flake8",
         "ms-python.isort",
         "ms-python.python",
         "njpwerner.autodocstring",
diff --git a/.vscode/settings.json b/.vscode/settings.json
index a82d931..05bacfa 100644
--- a/.vscode/settings.json
+++ b/.vscode/settings.json
@@ -156,6 +156,7 @@
         // mypy.
         "**/.mypy_cache/": true,
     },
+    "flake8.importStrategy": "fromEnvironment",
     "git.branchProtection": [
         "main",
         "master",
@@ -169,32 +170,14 @@
     ],
     "git.enableCommitSigning": true,
     "isort.importStrategy": "fromEnvironment",
-    "[markdown]": {
-        // Markdown uses two or more spaces at the end of a line to
-        // signify a line break.
-        "files.trimTrailingWhitespace": false,
-    },
     "markdown.extension.list.indentationSize": "inherit",
     "markdown.extension.print.absoluteImgPath": false,
     "markdown.extension.toc.levels": "2..3",
     "markdown.extension.toc.orderedList": true,
     "markdown.updateLinksOnFileMove.enabled": "prompt",
     "markdown.validate.enabled": true,
-    "[python]": {
-        // Somehow, the ms-python.isort removes blank lines before
-        // comments everywhere in the code.  Therefore, sorting imports
-        // on file save is disabled for now.
-        // "editor.codeActionsOnSave": {
-        //     // Format import statements with isort.
-        //     "source.organizeImports": true,
-        // },
-        "editor.defaultFormatter": "ms-python.black-formatter",
-    },
     "python.defaultInterpreterPath": "python3",
     "python.envFile": "${workspaceFolder}/.venv-dev",
-    "python.formatting.provider": "none",
-    "python.linting.flake8Enabled": true,
-    "python.testing.pytestEnabled": true,
     "pythonIndent.trimLinesWithOnlyWhitespace": true,
     "restructuredtext.editor.listEditing.list.indentationSize": "inherit",
     "restructuredtext.preview.name": "docutils",
@@ -202,10 +185,18 @@
     "rewrap.doubleSentenceSpacing": true,
     "shellformat.flag": "--language-dialect=bash --indent=4 --case-indent --space-redirects",
     "shellformat.path": "${workspaceFolder}/.venv-dev/bin/shfmt",
+    "yaml.format.printWidth": 79,
+    "[markdown]": {
+        // Markdown uses two or more spaces at the end of a line to
+        // signify a line break.
+        "files.trimTrailingWhitespace": false,
+    },
+    "[python]": {
+        "editor.defaultFormatter": "ms-python.black-formatter",
+    },
     "[yaml]": {
         "editor.detectIndentation": false,
         "editor.insertSpaces": true,
         "editor.tabSize": 2,
     },
-    "yaml.format.printWidth": 79,
 }