```
$ nix-env -f /home/user/nixpkgs/ -iA hunspellDicts.ro_RO

error: attribute 'ro_RO' in selection path 'hunspellDicts.ro_RO' not found
```

My changes:
```diff
diff --git a/pkgs/development/libraries/hunspell/dictionaries.nix b/pkgs/development/libraries/hunspell/dictionaries.nix
index 2cdc3010..0804bb94 100644
--- a/pkgs/development/libraries/hunspell/dictionaries.nix
+++ b/pkgs/development/libraries/hunspell/dictionaries.nix
@@ -782,5 +782,17 @@ in rec {
       license = with stdenv.lib.licenses; [ gpl2Only lgpl21Only mpl11 ];
       maintainers = with maintainers; [ louisdk1 ];
     };
+
+    ro_RO = ro-ro;
+    ro-ro = mkDictFromWordlist {
+      shortName = "ro-ro";
+      shortDescription = "Romanian (Romania)";
+      srcFileName = "ro_RO";
+      dictFileName = "ro_RO";
+      src = fetchurl {
+        url = "mirror://https://downloads.sourceforge.net/rospell/ro_RO.3.3.10.zip";
+        sha256 = "7f128d64ea06c9e6711c30b118c0afeefb014d8f33c92daccdf455aba2d04519";
+      };
+    };
   };
 }
```

I am trying to create a Romanian dictionary.