Resolves: #1687574 - avoid build failure in case we have working ypcat

zsh.spec

@@ -1,7 +1,7 @@
 Summary: Powerful interactive shell
 Name: zsh
 Version: 5.7.1
-Release: 2%{?dist}
+Release: 3%{?dist}
 License: MIT
 URL: http://zsh.sourceforge.net/
 Source0: https://downloads.sourceforge.net/%{name}/%{name}-%{version}.tar.xz
@@ -73,6 +73,9 @@ sed -e 's|^\.NOTPARALLEL|#.NOTPARALLEL|' -i 'Config/defs.mk.in'
 # make loading of module's dependencies work again (#1277996)
 export LIBLDFLAGS='-z lazy'
 
+# avoid build failure in case we have working ypcat (#1687574)
+export zsh_cv_sys_nis='no'
+
 %configure \
     --enable-etcdir=%{_sysconfdir} \
     --with-tcsetpgrp \
@@ -151,6 +154,9 @@ fi
 %doc Doc/*.html
 
 %changelog
+* Tue Mar 12 2019 Kamil Dudka <kdudka@redhat.com> - 5.7.1-3
+- avoid build failure in case we have working ypcat (#1687574)
+
 * Fri Mar  8 2019 Tim Landscheidt <tim@tim-landscheidt.de> - 5.7.1-2
 - Remove obsolete requirements for %%post/%%preun scriptlets