Hi, I think it's sufficient to add 'nextcloud-desktop-common' in the nextcloud-desktop-cmd dependencies
$ diff -u control.old control
--- control.old 2019-05-17 04:35:50.000000000 +0200
+++ control 2019-08-10 18:58:11.490413351 +0200
@@ -122,6 +122,7 @@
Architecture: any
Depends: libnextcloudsync0 (= ${binary:Version}),
libqt5sql5-sqlite,
+ nextcloud-desktop-common,
nextcloud-desktop-l10n,
${misc:Depends},
${shlibs:Depends}
signature.asc
Description: OpenPGP digital signature

