software/gitlab: fix rpath for nokogiri

This was using zlib and lzma from system if they are available

software/gitlab/software.cfg

@@ -14,6 +14,7 @@ extends =
     ../../component/nodejs/buildout.cfg
     ../../component/openssl/buildout.cfg
     ../../component/nginx/buildout.cfg
+    ../../component/xz-utils/buildout.cfg
     ../../component/zlib/buildout.cfg
     ../../component/icu/buildout.cfg
     gowork.cfg
@@ -182,13 +183,14 @@ bundle  = ${bundler-4gitlab:bundle}
 configure-command = cd ${:path} &&
     ${:bundle} config --local build.charlock_holmes --with-icu-dir=${icu:location}  &&
     ${:bundle} config --local build.pg --with-pg-config=${postgresql10:location}/bin/pg_config &&
-    ${:bundle} config --local build.re2 --with-re2-dir=${re2:location}
+    ${:bundle} config --local build.re2 --with-re2-dir=${re2:location} &&
+    ${:bundle} config --local build.nokogiri --with-zlib-dir=${zlib:location}
 
 make-binary =
 make-targets= cd ${:path} &&
     ${:bundle} install --deployment  --without development test mysql aws kerberos
 environment =
-  PKG_CONFIG_PATH=${openssl-1.0:location}/lib/pkgconfig:${re2:location}/lib/pkgconfig
+  PKG_CONFIG_PATH=${openssl-1.0:location}/lib/pkgconfig:${re2:location}/lib/pkgconfig:${xz-utils:location}/lib/pkgconfig
   PATH=${pkgconfig:location}/bin:%(PATH)s
 
 ################## Google re2