meson: don't install broken tmpfiles config with sshd?confdir == 'no'

20-systemd-ssh-generator.conf expands SSHCONFDIR, which is bogus when we
build with -Dsshconfdir=no. Similarly, avoid expanding SSHDCONFDIR in
20-systemd-userdb.conf when building with -Dsshconfdir=no.

Follow-up 6c7fc5d5f2.

meson.build

@@ -1669,6 +1669,9 @@ conf.set10('ENABLE_NSS', enable_nss)
 
 conf.set10('ENABLE_TIMEDATECTL', get_option('timedated') or get_option('timesyncd'))
 
+conf.set10('ENABLE_SSH_PROXY_CONFIG', sshconfdir != 'no')
+conf.set10('ENABLE_SSH_USERDB_CONFIG', conf.get('ENABLE_USERDB') == 1 and sshdconfdir != 'no')
+
 conf.set10('SYSTEMD_SLOW_TESTS_DEFAULT', slow_tests)
 
 #####################################################################

src/ssh-generator/meson.build

@@ -11,7 +11,7 @@ executables += [
         },
 ]
 
-if sshconfdir != 'no'
+if conf.get('ENABLE_SSH_PROXY_CONFIG') == 1
         custom_target(
                 '20-systemd-ssh-proxy.conf',
                 input : '20-systemd-ssh-proxy.conf.in',

src/userdb/meson.build

@@ -24,7 +24,7 @@ executables += [
         },
 ]
 
-if conf.get('ENABLE_USERDB') == 1 and sshdconfdir != 'no'
+if conf.get('ENABLE_SSH_USERDB_CONFIG') == 1
         custom_target(
                 '20-systemd-userdb.conf',
                 input : '20-systemd-userdb.conf.in',

tmpfiles.d/meson.build

@@ -34,8 +34,8 @@ in_files = [['etc.conf',                      ''],
             ['static-nodes-permissions.conf', ''],
             ['systemd.conf',                  ''],
             ['var.conf',                      ''],
-            ['20-systemd-userdb.conf',        'ENABLE_USERDB'],
-            ['20-systemd-ssh-generator.conf', ''],
+            ['20-systemd-userdb.conf',        'ENABLE_SSH_USERDB_CONFIG'],
+            ['20-systemd-ssh-generator.conf', 'ENABLE_SSH_PROXY_CONFIG'],
            ]
 
 foreach pair : in_files