From cfe91b00b48ea725a1f125b6e2837dfa99d1e62a Mon Sep 17 00:00:00 2001
From: Patrick Lodder <patricklodder@users.noreply.github.com>
Date: Mon, 8 Nov 2021 09:54:43 -0500
Subject: [PATCH] qa: nuke caches on CI descriptor change

Adds a nonce field to manually nuke the cache

Changing the CI workflow descriptor can invalidate dependencies
and ccache caches by introducing different compilers or base OS,
but as GH Actions does not let us update an existing cache, this
would cause every subsequent CI run to rebuild everything until
a nuke is triggered.
---
 .github/workflows/ci.yml | 5 +++--
 1 file changed, 3 insertions(+), 2 deletions(-)

diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
index 5a81bf262..5aa3011bb 100644
--- a/.github/workflows/ci.yml
+++ b/.github/workflows/ci.yml
@@ -21,6 +21,7 @@ jobs:
       CCACHE_TEMPDIR: /tmp/.ccache-temp
       CCACHE_COMPRESS: "1"
       PYTHON_DEBUG: "1"
+      CACHE_NONCE: "1"
       WINEDEBUG: fixme-all
       SDK_URL: https://bitcoincore.org/depends-sources/sdks
 
@@ -182,7 +183,7 @@ jobs:
           cache-name: depends
         with:
           path: ./depends/built
-          key: ${{ matrix.name }}-${{ env.cache-name }}-${{ hashFiles('depends/packages/*') }}
+          key: ${{ matrix.name }}-${{ env.cache-name }}-${{ hashFiles('depends/packages/*', '.github/workflows/ci.yml') }}
 
       - name: Build depends
         run: |
@@ -194,7 +195,7 @@ jobs:
           cache-name: ccache
         with:
           path: ~/.ccache
-          key: ${{ matrix.name }}-${{ env.cache-name }}-${{ hashFiles('**/configure.ac') }}
+          key: ${{ matrix.name }}-${{ env.cache-name }}-${{ hashFiles('**/configure.ac', '.github/workflows/ci.yml') }}
 
       - name: Build Dogecoin
         run: |