cwebbin: add license

lib/licenses.nix

@@ -13,6 +13,11 @@ lib.mapAttrs (n: v: v // { shortName = n; }) rec {
    * add it to this list. The URL mentioned above is a good source for inspiration.
    */
 
+  abstyles = spdx {
+    spdxId = "Abstyles";
+    fullName = "Abstyles License";
+  };
+
   afl21 = spdx {
     spdxId = "AFL-2.1";
     fullName = "Academic Free License v2.1";

pkgs/development/tools/misc/cwebbin/default.nix

@@ -46,5 +46,6 @@ stdenv.mkDerivation rec {
     description = "Literate Programming in C/C++";
     platforms = with platforms; unix;
     maintainers = with maintainers; [ vrthra ];
+    license = licenses.abstyles;
   };
 }