package_facts fix empty packages on foreign mgr (#83855)

* package_facts fix empty packages on foreign mgr

return the first package manager that provides output

add tests with fake rpm on apt machines

1 files changed, 15 insertions, 3 deletions

diff --git a/lib/ansible/modules/package_facts.py b/lib/ansible/modules/package_facts.py
index df10c4694d..e1dc026093 100644
--- a/lib/ansible/modules/package_facts.py
+++ b/lib/ansible/modules/package_facts.py
@@ -460,7 +460,7 @@ def main():
 
     # get supported pkg managers
     PKG_MANAGERS = get_all_pkg_managers()
-    PKG_MANAGER_NAMES = [x.lower() for x in PKG_MANAGERS.keys()]
+    PKG_MANAGER_NAMES = sorted([x.lower() for x in PKG_MANAGERS.keys()])
     # add aliases
     PKG_MANAGER_NAMES.extend([alias for alist in ALIASES.values() for alias in alist])
 
@@ -510,12 +510,24 @@ def main():
 
         manager = PKG_MANAGERS[pkgmgr]()
         try:
+            packages_found = {}
             if manager.is_available(handle_exceptions=False):
-                found += 1
                 try:
-                    packages.update(manager.get_packages())
+                    packages_found = manager.get_packages()
                 except Exception as e:
                     module.warn('Failed to retrieve packages with %s: %s' % (pkgmgr, to_text(e)))
+
+            # only consider 'found' if it results in something
+            if packages_found:
+                found += 1
+                for k in packages_found.keys():
+                    if k in packages:
+                        packages[k].extend(packages_found[k])
+                    else:
+                        packages[k] = packages_found[k]
+            else:
+                module.warn('Found "%s" but no associated packages' % (pkgmgr))
+
         except Exception as e:
             if pkgmgr in module.params['manager']:
                 module.warn('Requested package manager %s was not usable by this module: %s' % (pkgmgr, to_text(e)))