ngrep: make use of lib.licenses (#540728)

lib/licenses/licenses.nix

@@ -1173,6 +1173,11 @@ lib.mapAttrs mkLicense (
       fullName = "Nethack General Public License";
     };
 
+    ngrep = {
+      spdxId = "ngrep";
+      fullName = "ngrep License";
+    };
+
     nistSoftware = {
       spdxId = "NIST-Software";
       fullName = "NIST Software License";

pkgs/by-name/ng/ngrep/package.nix

@@ -47,12 +47,10 @@ stdenv.mkDerivation (finalAttrs: {
       more common packet sniffing tools, such as tcpdump and snoop.
     '';
     homepage = "https://github.com/jpr5/ngrep/";
-    license = {
-      shortName = "ngrep"; # BSD-style, see README.md and LICENSE
-      url = "https://github.com/jpr5/ngrep/blob/master/LICENSE";
-      free = true;
-      redistributable = true;
-    };
+    license = lib.licenses.AND [
+      lib.licenses.ngrep
+      lib.licenses.bsd3
+    ];
     platforms = with lib.platforms; linux ++ darwin;
     maintainers = [ lib.maintainers.bjornfor ];
     mainProgram = "ngrep";