upgrade pip first

Author: rmorshea

.github/workflows/test.yml

@@ -26,9 +26,7 @@ jobs:
       - name: Run Tests
         env:
           HEADLESS: 1
-        run: |
-          pip install --upgrade pip
-          nox
+        run: nox
 
   test-on-macos:
     runs-on: macos-latest
@@ -47,9 +45,7 @@ jobs:
       - name: Run Tests
         env:
           HEADLESS: 1
-        run: |
-          pip install --upgrade pip
-          nox
+        run: nox
 
   test-on-windows:
     runs-on: windows-latest
@@ -67,9 +63,6 @@ jobs:
       - name: Install Python Dependencies
         run: pip install -r requirements/test-run.txt
       - name: Run Tests
-        shell: bash
         env:
           HEADLESS: 1
-        run: |
-          pip install --upgrade pip wheel
-          nox
+        run: nox

noxfile.py

@@ -1,4 +1,6 @@
 import os
+from functools import wraps
+from typing import TypeVar
 
 import nox
 from nox.sessions import Session
@@ -8,7 +10,20 @@
 BLACK_DEFAULT_EXCLUDE = r"\.eggs|\.git|\.hg|\.mypy_cache|\.nox|\.tox|\.venv|\.svn|_build|buck-out|build|dist"
 
 
+_Func = TypeVar("_Func")
+
+
+def upgrade_pip(func: _Func) -> _Func:
+    @wraps(func)
+    def decorator(session: Session) -> None:
+        session.install("--upgrade", "pip")
+        func(session)
+
+    return decorator
+
+
 @nox.session
+@upgrade_pip
 def test_python(session: Session) -> None:
     session.env.update(os.environ)
     session.install("-r", "requirements/test-env.txt")
@@ -20,6 +35,7 @@ def test_python(session: Session) -> None:
 
 
 @nox.session
+@upgrade_pip
 def check_types(session: Session) -> None:
     session.install("-r", "requirements/check-types.txt")
     session.install("-r", "requirements/pkg-deps.txt")
@@ -28,6 +44,7 @@ def check_types(session: Session) -> None:
 
 
 @nox.session
+@upgrade_pip
 def check_style(session: Session) -> None:
     session.install("-r", "requirements/check-style.txt")
     session.run(
@@ -41,7 +58,9 @@ def check_style(session: Session) -> None:
 
 
 @nox.session
+@upgrade_pip
 def build_docs(session: Session) -> None:
+    upgrade_pip(session)
     session.install("-r", "requirements/build-docs.txt")
     session.install("-e", ".[all]")
     session.run("sphinx-build", "-b", "html", "docs/source", "docs/build")