Make cabal-cache non-fatal

.github/scripts/cabal-cache.sh

@@ -0,0 +1,20 @@
+#!/usr/bin/env bash
+
+case "$(uname -s)" in
+	MSYS_*|MINGW*)
+		ext=".exe"
+		;;
+	*)
+		ext=""
+	   ;;
+esac
+
+if [ "${CABAL_CACHE_DISABLE}" = "yes" ] ; then
+	echo "cabal-cache disabled (CABAL_CACHE_DISABLE set)"
+elif [ "${CABAL_CACHE_NONFATAL}" = "yes" ] ; then
+	time "cabal-cache${ext}" "$@" || echo "cabal-cache failed (CABAL_CACHE_NONFATAL set)"
+else
+	time "cabal-cache${ext}" "$@"
+	exit $?
+fi
+

.github/scripts/common.sh

@@ -15,7 +15,7 @@ sync_from() {
 		cabal_store_path="$(dirname "$(cabal help user-config | tail -n 1 | xargs)")/store"
 	fi
 
-	cabal-cache sync-from-archive \
+	cabal-cache.sh sync-from-archive \
 		--host-name-override=${S3_HOST} \
 		--host-port-override=443 \
 		--host-ssl-override=True \
@@ -29,7 +29,7 @@ sync_to() {
 		cabal_store_path="$(dirname "$(cabal help user-config | tail -n 1 | xargs)")/store"
 	fi
 
-	cabal-cache sync-to-archive \
+	cabal-cache.sh sync-to-archive \
 		--host-name-override=${S3_HOST} \
 		--host-port-override=443 \
 		--host-ssl-override=True \
@@ -115,6 +115,10 @@ download_cabal_cache() {
 		mv "cabal-cache${exe}" "${dest}${exe}"
 		chmod +x "${dest}${exe}"
 	fi
+
+	# install shell wrapper
+	cp "${CI_PROJECT_DIR}"/.github/scripts/cabal-cache.sh "$HOME"/.local/bin/
+	chmod +x "$HOME"/.local/bin/cabal-cache.sh
     )
 }
 

.github/workflows/release.yaml

@@ -12,6 +12,10 @@ on:
   schedule:
     - cron: '0 2 * * *'
 
+env:
+  CABAL_CACHE_DISABLE: ${{ vars.CABAL_CACHE_DISABLE }}
+  CABAL_CACHE_NONFATAL: yes
+
 jobs:
   build-linux:
     name: Build linux binary