From f67c71092e84e8e27ab5f87361461b3773070b7e Mon Sep 17 00:00:00 2001
From: "Kenneth J. Pronovici" <pronovic@users.noreply.github.com>
Date: Fri, 2 Sep 2022 13:04:19 -0500
Subject: [PATCH] Fix matrix build in GitHub Actions (#41)

---
 .github/workflows/tox.yml | 9 ++++++++-
 utils/showplatform.py     | 9 +++++++++
 2 files changed, 17 insertions(+), 1 deletion(-)
 create mode 100644 utils/showplatform.py

diff --git a/.github/workflows/tox.yml b/.github/workflows/tox.yml
index a784150..a442158 100644
--- a/.github/workflows/tox.yml
+++ b/.github/workflows/tox.yml
@@ -10,12 +10,15 @@ on:
     - cron: '05 17 15 * *'  # 15th of the month at 5:05pm UTC
 jobs:
   build:
-    runs-on: ubuntu-latest
     strategy:
       matrix:
         os: [ubuntu-latest, macos-latest, windows-latest]
         python: ["3.7", "3.8", "3.9", "3.10" ]
+    runs-on: ${{ matrix.os }}
     env:
+      # Run builds using a specific version of Poetry, to avoid surprises
+      POETRY_VERSION: "1.2.0"
+      # Ensure that Poetry never tries to unlock a keyring, which will either fail or hang
       # See: https://github.com/python-poetry/poetry/issues/2692#issuecomment-1235683370
       PYTHON_KEYRING_BACKEND: "keyring.backends.null.Keyring"
     steps: 
@@ -25,9 +28,13 @@ jobs:
         uses: actions/setup-python@v2
         with:
           python-version: ${{ matrix.python }}
+      - name: Platform information
+        run: |
+          python utils/showplatform.py
       - name: Install Poetry
         uses: snok/install-poetry@v1.2.1 # see https://github.com/snok/install-poetry
         with:
+          version: ${{ env.POETRY_VERSION }}
           virtualenvs-create: true
           virtualenvs-in-project: true
       - name: Install Poetry plugins
diff --git a/utils/showplatform.py b/utils/showplatform.py
new file mode 100644
index 0000000..d6bf710
--- /dev/null
+++ b/utils/showplatform.py
@@ -0,0 +1,9 @@
+#!/usr/bin/env python3
+# Display information about the current platform
+
+import platform
+import sys
+
+fields = ["   %s: %s" % i for i in zip(["system", "node", "release", "version", "machine", "processor"], platform.uname()) if i[1]]
+print("Python %s" % sys.version)
+print("Platform\n%s" % "\n".join(fields))