From b0bda36a94efc347fccbc7ef151fbb3e7cefd1ef Mon Sep 17 00:00:00 2001
From: Mikolaj Konarski <mikolaj.konarski@gmail.com>
Date: Thu, 9 Feb 2023 19:58:32 +0100
Subject: [PATCH] Work around ghcup cache woes also in our dogfooding CI
 scripts

(cherry picked from commit a71437360faa9de62a6165eb80e0167985105509)
---
 .github/workflows/validate.yml | 10 ++++++++++
 1 file changed, 10 insertions(+)

diff --git a/.github/workflows/validate.yml b/.github/workflows/validate.yml
index 658101b5aec..317870c0fd1 100644
--- a/.github/workflows/validate.yml
+++ b/.github/workflows/validate.yml
@@ -274,6 +274,16 @@ jobs:
     steps:
       - uses: actions/checkout@v3
 
+      # See https://github.com/haskell/cabal/pull/8739
+      - name: Sudo chmod to permit ghcup to update its cache
+        run: |
+          if [[ "${{ runner.os }}" == "Linux" ]]; then
+            sudo ls -lah /usr/local/.ghcup/cache
+            sudo mkdir -p /usr/local/.ghcup/cache
+            sudo ls -lah /usr/local/.ghcup/cache
+            sudo chown -R $USER /usr/local/.ghcup
+            sudo chmod -R 777 /usr/local/.ghcup
+          fi
       - uses: haskell/actions/setup@v2
         id: setup-haskell
         with: