Add script to test fetching changed recipes

.gitlab-ci.yml

@@ -25,6 +25,14 @@ cargo-test:
   script:
     - cargo test --locked
 
+fetch-changed:
+  image: "rust:trixie"
+  stage: test
+  script:
+    - |
+      export PATH="$HOME/.cargo/bin:$PATH" PODMAN_BUILD=0 SKIP_CHECK_TOOLS=1 &&
+      ./scripts/fetch-changed.sh
+
 img:
   image: "redoxos/redox-base-x86_64"
   stage: test

scripts/fetch-changed.sh

@@ -0,0 +1,23 @@
+#!/usr/bin/env bash
+
+set -e
+
+git fetch origin master
+packages=""
+for toml in $(git diff --name-only origin/master | grep '/recipe.toml$' | sort | uniq)
+do
+    package="$(basename "$(dirname "${toml}")")"
+    if [ -n "${packages}" ]
+    then
+        packages="${packages},"
+    fi
+    packages="${packages}${package}"
+done
+if [ -n "${packages}" ]
+then
+    make f."${packages}"
+else
+    echo "No recipe.toml changes found"
+fi
+
+