Retry snap install command if failed

Author: exaroth

.github/workflows/workflow.yml

@@ -25,7 +25,7 @@ jobs:
         run: sudo apt-get update && sudo apt-get install snapd sqlite3
 
       - name: Install newsboat
-        run: sudo snap install newsboat
+        run: source ./scripts/retry.sh && with_retry 5 sudo snap install newsboat
 
       - name: Fetch liveboat
         run: |

scripts/retry.sh

@@ -0,0 +1,17 @@
+#!/bin/bash
+ 
+with_retry() {
+    local -r -i max_attempts="$1"; shift
+    local -i attempt_num=1
+    until "$@"
+    do
+        if ((attempt_num==max_attempts))
+        then
+            echo "Attempt $attempt_num failed and there are no more attempts left!"
+            return 1
+        else
+            echo "Attempt $attempt_num failed! Trying again in $attempt_num seconds..."
+            sleep $((attempt_num++))
+        fi
+    done
+}