This is due to kerberos version in sid being unsupported in sssd:
if test x$build_pac_responder = xyes
then
AC_PATH_PROG(KRB5_CONFIG, krb5-config)
AC_MSG_CHECKING(for supported MIT krb5 version)
KRB5_VERSION="`$KRB5_CONFIG --version`"
case $KRB5_VERSION in
Kerberos\ 5\ release\ 1.9* | \
Kerberos\ 5\ release\ 1.10* | \
Kerberos\ 5\ release\ 1.11* | \
Kerberos\ 5\ release\ 1.12* | \
Kerberos\ 5\ release\ 1.13* | \
Kerberos\ 5\ release\ 1.14* | \
Kerberos\ 5\ release\ 1.15* | \
Kerberos\ 5\ release\ 1.16* | \
Kerberos\ 5\ release\ 1.17* | \
Kerberos\ 5\ release\ 1.18* | \
Kerberos\ 5\ release\ 1.19* | \
Kerberos\ 5\ release\ 1.20* | \
Kerberos\ 5\ release\ 1.21*)
krb5_version_ok=yes
AC_MSG_RESULT([yes])
;;
*)
AC_MSG_RESULT([no])
AC_MSG_WARN([Cannot build authdata plugin with this version of
MIT Kerberos, please use 1.9.x or later])
esac
fi
and kerberos version in sid is 1.22.
So it doesn't build sssd_pac.
FWIW.
/mjt
