mdds: add license

pkgs/development/libraries/mdds/0.12.1.nix

···
     sha256 = "0gg8mb9kxh3wggh7njj1gf90xy27p0yq2cw88wqar9hhg2fmwmi3";
   };
 
-  meta = {
+  meta = with stdenv.lib; {
     homepage = https://gitlab.com/mdds/mdds;
     description = "A collection of multi-dimensional data structure and indexing algorithm";
-    platforms = stdenv.lib.platforms.all;
+    platforms = platforms.all;
+    license = licenses.mit;
   };
 }

pkgs/development/libraries/mdds/0.7.1.nix

···
     sha256 = "0zhrx7m04pknc8i2cialmbna1hmwa0fzs8qphan4rdxibf0c4yzy";
   };
 
-  meta = {
+  meta = with stdenv.lib; {
     homepage = https://gitlab.com/mdds/mdds/;
     description = "A collection of multi-dimensional data structure and indexing algorithm";
-    platforms = stdenv.lib.platforms.all;
+    platforms = platforms.all;
+    license = licenses.mit;
   };
 }

pkgs/development/libraries/mdds/default.nix

···
 
   checkInputs = [ boost ];
 
-  meta = {
+  meta = with stdenv.lib; {
     inherit version;
     homepage = https://gitlab.com/mdds/mdds;
     description = "A collection of multi-dimensional data structure and indexing algorithm";
-    platforms = stdenv.lib.platforms.all;
+    platforms = platforms.all;
+    license = licenses.mit;
   };
 }