anchor.diff:      "2.10.2" = mkScala {
         version = "2.10.2";
         sha256 = "18v6jr42rif84q5cb82kynigqls2q5q3qnb61040m92496ygv4zn";
  +    };
  +    "2.10.3" = mkScala {
  +      version = "2.10.3";
  +      sha256 = "16ac935wydrxrvijv4ldnz4vl2xk8yb3yzb9bsi3nb9sic7fxl95";
       };
       "2.11.0-M4" = mkScala {
         version = "2.11.0-M4";
  
positive.code:       name = scalacheckVer;
        value = mkScalaCheck {
          name = "scalacheck_${scalaVer}-${scalacheckVer}";
          runTests = if scalacheck ? runTests then scalacheck.runTests else true;
          inherit scala;
          inherit (scalacheck) rev sha256;
  
negative.code:   scalacheck_flat = listToAttrs (flatten (mapAttrsToList (scalaVer: ss:
      mapAttrsToList (v: s: nameValuePair "scalacheck_${scalaVer}-${v}" s) ss
    ) scalacheck));
  
    current = scalacheck."2.10.3"."1.10.1";
    snapshot = scalacheck."2.10.3"."1.11.0-SNAPSHOT";
  }
  