fix: remove session install calls from nox sessions that don't need a venv

Author: 56kyle

{{cookiecutter.project_name}}/noxfile.py

@@ -197,10 +197,6 @@ def docs_build(session: Session) -> None:
 @nox.session(python=DEFAULT_PYTHON_VERSION, name="build-python", tags=[BUILD, PYTHON])
 def build_python(session: Session) -> None:
     """Build sdist and wheel packages (uv build)."""
-    session.log("Installing build dependencies...")
-    # Sync core & dev deps are needed for accessing project source code.
-    session.install("-e", ".", "--group", "dev")
-
     session.log(f"Building sdist and wheel packages with py{session.python}.")
     {% if cookiecutter.add_rust_extension == "y" -%}
     session.run("maturin", "develop", "--uv")
@@ -259,7 +255,7 @@ def publish_python(session: Session) -> None:
     Requires packages to be built first (`nox -s build-python` or `nox -s build`).
     Requires TWINE_USERNAME/TWINE_PASSWORD or TWINE_API_KEY environment variables set (usually in CI).
     """
-    session.install("-e", ".", "--group", "dev")
+    session.install("twine")
 
     session.log("Checking built packages with Twine.")
     session.run("twine", "check", "dist/*")
@@ -287,8 +283,6 @@ def release(session: Session) -> None:
     Optionally accepts increment (major, minor, patch) after '--'.
     """
     session.log("Running release process using Commitizen...")
-    session.install("-e", ".", "--group", "dev")
-
     try:
         session.run("git", "version", success_codes=[0], external=True, silent=True)
     except CommandFailed: