tomcat: split default webapps to separate output (~6M)

(cherry picked from commit 0c2d943529)

nixos/modules/services/web-servers/tomcat.nix

@@ -74,8 +74,8 @@ in
 
       webapps = mkOption {
         type = types.listOf types.package;
-        default = [ tomcat ];
-        defaultText = "[ tomcat ]";
+        default = [ tomcat.webapps ];
+        defaultText = "[ tomcat.webapps ]";
         description = "List containing WAR files or directories with WAR files which are web applications to be deployed on Tomcat";
       };
 

pkgs/servers/http/tomcat/default.nix

@@ -11,10 +11,13 @@ let
       inherit sha256;
     };
     
+    outputs = [ "out" "webapps" ];
     installPhase =
       ''
         mkdir $out
         mv * $out
+        mkdir -p $webapps/webapps
+        mv $out/webapps $webapps/
       '';
     
     meta = {