Hi Frederic,
reproductible.debian.org reports an FTBFS problem on lemonldap-ng which
seems to point a Lasso problem:
Lasso.c: loadable library and perl binaries are mismatched (got
handshake key 0x9200080, needed 0x9400080)
You can see the full report here:
https://reproducible.debian.net/rb-pkg/unstable/armhf/lemonldap-ng.html
Regards,
Xavier