dev container improvements

Author: notatallshaw

.devcontainer/devcontainer.json

@@ -1,18 +1,30 @@
 {
 	"name": "pip",
 	"image": "mcr.microsoft.com/devcontainers/python:3",
+	"remoteUser": "vscode",
+	"remoteEnv": {
+		"PATH": "/home/vscode/.local/bin:${containerEnv:PATH}"
+	},
 	"features": {
 		"ghcr.io/rocker-org/devcontainer-features/apt-packages:1": {
-			"packages": "mercurial,subversion,bzr"
+			"packages": "mercurial,subversion,bzr,python3-venv"
 		}
 	},
-	"postCreateCommand": "python -m venv .venv\nsource .venv/bin/activate\npip install nox\npip install -e .",
+	"postCreateCommand": "bash ${containerWorkspaceFolder}/.devcontainer/postCreate.sh",
 	"customizations": {
 		"vscode": {
 			"extensions": [
-				"hbenl.vscode-test-explorer",
-				"ms-python.python"
-			]
+				"ms-python.python",
+				"ms-python.black-formatter",
+				"charliermarsh.ruff"
+			],
+			"settings": {
+				"python.testing.pytestEnabled": true,
+				"python.testing.pytestArgs": [
+					"-n",
+					"auto"
+				]
+			}
 		}
 	}
 }

.devcontainer/postCreate.sh

@@ -0,0 +1,12 @@
+#!/bin/bash
+set -Eeuo pipefail
+
+# Get the workspace directory
+WORKSPACE_DIR="${WORKSPACE_DIR:-/workspaces/pip}"
+cd "$WORKSPACE_DIR"
+
+# Upgrade pip and install development dependencies
+python -m pip install --upgrade pip
+python -m pip install nox --group test
+python -m nox -s common-wheels
+python -m pip install -e .

noxfile.py

@@ -96,12 +96,8 @@ def should_update_common_wheels(session: nox.Session) -> bool:
     return need_to_repopulate
 
 
-# -----------------------------------------------------------------------------
-# Development Commands
-# -----------------------------------------------------------------------------
-@nox.session(python=["3.9", "3.10", "3.11", "3.12", "3.13", "3.14", "pypy3"])
-def test(session: nox.Session) -> None:
-    # Get the common wheels.
+def get_common_wheels(session: nox.Session) -> None:
+    """Build the common wheels needed by tests."""
     if should_update_common_wheels(session):
         # fmt: off
         run_with_protected_pip(
@@ -115,6 +111,21 @@ def test(session: nox.Session) -> None:
         msg = f"Reusing existing common-wheels at {LOCATIONS['common-wheels']}."
         session.log(msg)
 
+
+# -----------------------------------------------------------------------------
+# Development Commands
+# -----------------------------------------------------------------------------
+@nox.session(name="common-wheels")
+def common_wheels(session: nox.Session) -> None:
+    """Build the common wheels needed by tests."""
+    get_common_wheels(session)
+
+
+@nox.session(python=["3.9", "3.10", "3.11", "3.12", "3.13", "3.14", "pypy3"])
+def test(session: nox.Session) -> None:
+    # Get the common wheels.
+    get_common_wheels(session)
+
     # Build source distribution
     # HACK: we want to skip building and installing pip when nox's --no-install
     # flag is given (to save time when running tests back to back with different