thank me later (closed #1)

src/main.rs

@@ -61,10 +61,10 @@ fn main() {
                             .help("Excludes packages from given operation"),
                     )
                     .arg(
-                        Arg::with_name("regen")
-                            .short("r")
-                            .long("regen")
-                            .help("Regenerates repository after building give package(s)"),
+                        Arg::with_name("no-regen")
+                            .short("n")
+                            .long("no-regen")
+                            .help("Does not regenerate repository after building given package(s)"),
                     ),
             )
             .subcommand(

src/operations/build.rs

@@ -68,10 +68,10 @@ pub fn build(matches: &ArgMatches) {
         generate();
     }
 
-    if matches
+    if !matches
         .subcommand_matches("build")
         .unwrap()
-        .is_present("regen")
+        .is_present("no-regen")
     {
         repository::generate();
     }