make some bundles arch-compatible, more default packages for arch

bundles/postfix/items.py

@@ -21,6 +21,12 @@ for identifier in node.metadata.get('postfix/mynetworks', set()):
             netmask = '128'
         mynetworks.add(f'[{ip6}]/{netmask}')
 
+my_package = 'pkg_pacman:postfix' if node.has_bundle('pacman') else 'pkg_apt:postfix'
+
+pkg_pip = {
+    'dnsq': {},
+}
+
 files = {
     '/etc/mailname': {
         'content': node.metadata.get('postfix/myhostname', node.metadata['hostname']),
@@ -70,7 +76,7 @@ actions = {
         'command': 'newaliases',
         'triggered': True,
         'needs': {
-            'pkg_apt:postfix',
+            my_package,
         },
     },
 }
@@ -80,7 +86,7 @@ svc_systemd = {
         'needs': {
             'file:/etc/postfix/master.cf',
             'file:/etc/postfix/main.cf',
-            'pkg_apt:',
+            my_package,
         },
     },
 }

bundles/postfix/metadata.py

@@ -4,7 +4,10 @@ defaults = {
     'apt': {
         'packages': {
             'postfix': {},
-            'python3-dnsq': {},
+            'python3-dnsq': {
+                # handled by pkg_pip
+                'installed': False,
+            },
         },
     },
     'icinga2_api': {
@@ -19,6 +22,11 @@ defaults = {
             },
         },
     },
+    'pacman': {
+        'packages': {
+            'postfix': {},
+        },
+    },
 }
 
 if node.has_bundle('postfixadmin'):