Check that the crate has finished publishing

.github/scripts/publish-crate.sh

@@ -2,11 +2,43 @@
 
 set -e # Fail if any command fails
 
+function wait_for_release() {
+   local package="$0"
+   local package_with_underscores="${package/-/_}"
+   
+   local first_two_characters="${package_with_underscores:0:2}"
+   local second_two_characters="${package_with_underscores:2:2}"
+
+   local path="$first_two_characters/$second_two_characters"
+
+   if [ "$package" == "agb" ]; then
+      path="3/a"
+   fi
+
+   local url_to_poll="https://raw.githubusercontent.com/rust-lang/crates.io-index/master/$path/$package_with_underscores"
+
+   local expected_version
+   expected_version=$(grep -E '^version' Cargo.toml | grep -oE '[0-9.]+')
+
+   local attempts=0
+
+   while [ $attempts -le 15 ]; do
+      echo "Polling crates.io to see if the version has updated"
+      if curl "$url_to_poll" | grep "$expected_version"; then
+         return
+      fi
+
+      sleep 30s
+      attempts=$((attempts + 1))
+   done
+}
+
 PROJECTS_TO_RELEASE_IN_ORDER="agb-macros agb-fixnum agb-image-converter agb-sound-converter agb"
 
 for PROJECT in $PROJECTS_TO_RELEASE_IN_ORDER; do
    pushd "$PROJECT"
    echo "Publishing $PROJECT"
    cargo publish
+   wait_for_release "$PROJECT"
    popd
 done