Add explicit Build-Depends on libgcrypt11-dev

and don't rely on libgnutls-dev to pull in that dependency for us.
Newer versions of GnuTLS no longer use gcrypt but nettle as crypto backend.

Closes: #745955

1 files changed, 1 insertions, 0 deletions

diff --git a/debian/control b/debian/control
index 5b6a1e69..78720c4c 100644
--- a/debian/control
+++ b/debian/control
@@ -18,6 +18,7 @@ Build-Depends: debhelper (>= 9),
                ppp-dev (>= 2.4.6),
                libpolkit-gobject-1-dev,
                libgnutls-dev,
+               libgcrypt11-dev,
                uuid-dev,
                systemd (>= 185),
                libsystemd-login-dev (>= 185),