fixup! component/util-linux: build with slapos ncurses

component/util-linux/buildout.cfg

@@ -3,6 +3,7 @@ extends =
   ../perl/buildout.cfg
   ../ncurses/buildout.cfg
   ../libcap-ng/buildout.cfg
+  ../pkgconfig/buildout.cfg
   ../xz-utils/buildout.cfg
 
 [util-linux]
@@ -47,9 +48,10 @@ configure-options =
   --without-audit
   --with-cap-ng=${libcap-ng:location}
 environment =
-  PATH=${perl:location}/bin:${xz-utils:location}/bin:%(PATH)s
+  PATH=${perl:location}/bin:${xz-utils:location}/bin:${pkgconfig:location}/bin:%(PATH)s
   LDFLAGS=-L${libcap-ng:location}/lib -Wl,-rpath=${libcap-ng:location}/lib -L${ncurses:location}/lib -Wl,-rpath=${ncurses:location}/lib
   CFLAGS=-I${libcap-ng:location}/include -I${ncurses:location}/include
+  PKG_CONFIG_PATH=${ncurses:location}/lib/pkgconfig
 
 [libuuid]
 # libuuid is inside util-linux source code with only libuuid feature enabled.