fix yelp_tools deps and switch to samu

packages/yelp_tools.rb

@@ -24,16 +24,16 @@ class Yelp_tools < Package
 
   depends_on 'yelp_xsl'
   depends_on 'libxslt'
-  depends_on 'lxml'
+  depends_on 'py3_lxml'
 
   def self.build
     system "meson #{CREW_MESON_LTO_OPTIONS} \
     builddir"
     system 'meson configure builddir'
-    system 'ninja -C builddir'
+    system 'samu -C builddir'
   end
 
   def self.install
-    system "DESTDIR=#{CREW_DEST_DIR} ninja -C builddir install"
+    system "DESTDIR=#{CREW_DEST_DIR} samu -C builddir install"
   end
 end