T7530: Build package binaries script should exit if repo is absent

The build package binaries script should exit if the repo is absent
or cannot be cloned

If a build package `repo-a` depends on the `repo-b` and the `repo-b`
cannot be cloned, then we shoud exit from the script to avoid
partly build dependencies

For example:
```
[[packages]]
name = "fake-repo"
commit_id = "v0.0.1"
scm_url = "https://github.com/vyos/fake-repo"

[[packages]]
name = "ethtool"
commit_id = "debian/1%6.10-1"
scm_url = "https://salsa.debian.org/kernel-team/ethtool"
```

If ethtool depends on some fake-package and this package cannot be
downloaded from the repo, then we shouldn't build the ethtool package
at all.

1 files changed, 5 insertions, 0 deletions

diff --git a/scripts/package-build/build.py b/scripts/package-build/build.py
index 9c1df7b3..28e9db2a 100755
--- a/scripts/package-build/build.py
+++ b/scripts/package-build/build.py
@@ -17,6 +17,7 @@
 
 import glob
 import shutil
+import sys
 import toml
 import os
 
@@ -91,7 +92,11 @@ def build_package(package: list, patch_dir: Path) -> None:
 
         # Check out the specific commit
         run(['git', 'checkout', package['commit_id']], cwd=repo_dir, check=True)
+    except CalledProcessError as e:
+        print(f"❌ Failed to clone or checkout for package '{repo_name}': {e}")
+        sys.exit(1)
 
+    try:
         # The `pre_build_hook` is an optional configuration defined in `package.toml`.
         # It executes after the repository is checked out and before the build process begins.
         # This hook allows you to perform preparatory tasks, such as creating directories,