From fe55f92cdc575d00204a134b2d556c1053e1ed4e Mon Sep 17 00:00:00 2001
From: Joshua Bronson <jab@users.noreply.github.com>
Date: Sun, 23 Aug 2020 21:52:28 -0400
Subject: [PATCH] Fix pre-commit cache key in GitHub Actions. (#3740)

Fix pre-commit cache key to include full Python version as per
https://github.com/pre-commit/pre-commit/issues/1575#issuecomment-678792700
and https://pre-commit.com/#github-actions-example
---
 .github/workflows/tests.yaml | 5 ++++-
 1 file changed, 4 insertions(+), 1 deletion(-)

diff --git a/.github/workflows/tests.yaml b/.github/workflows/tests.yaml
index 13f9a256..26bd1573 100644
--- a/.github/workflows/tests.yaml
+++ b/.github/workflows/tests.yaml
@@ -43,11 +43,14 @@ jobs:
         with:
           path: ${{ steps.pip-cache.outputs.dir }}
           key: pip|${{ runner.os }}|${{ matrix.python }}|${{ hashFiles('setup.py') }}|${{ hashFiles('requirements/*.txt') }}
+      - name: set full Python version in PY env var
+        # See https://pre-commit.com/#github-actions-example
+        run: echo "::set-env name=PY::$(python -VV | sha256sum | cut -d' ' -f1)"
       - name: cache pre-commit
         uses: actions/cache@v1
         with:
           path: ~/.cache/pre-commit
-          key: pre-commit|${{ matrix.python }}|${{ hashFiles('.pre-commit-config.yaml') }}
+          key: pre-commit|${{ env.PY }}|${{ hashFiles('.pre-commit-config.yaml') }}
         if: matrix.tox == 'style'
       - run: pip install tox
       - run: tox -e ${{ matrix.tox }}