Make gleam deps tree -p and -i mutually exclusive

Author: silby

CHANGELOG.md

@@ -8,7 +8,7 @@
   on the Erlang target.
   ([Giacomo Cavalieri](https://github.com/giacomocavalieri))
 
-- Analysis it now fault tolerant in the presence of errors in field definitions
+- Analysis is now fault tolerant in the presence of errors in field definitions
   of custom type variants.
   ([Adi Salimgereyev](https://github.com/abs0luty))
 
@@ -23,6 +23,11 @@
   going to run.
   ([Giacomo Cavalieri](https://github.com/giacomocavalieri))
 
+- The `--invert` and `--package` options of `gleam deps tree` are now mutually
+  exclusive; if both options are given the command will fail. Previously,
+  `--invert` would be silently ignored if given together with `--package`.
+  ([Evan Silberman](https://github.com/silby))
+
 ### Language server
 
 - The "inline variable" code action can now trigger when used over the let

compiler-cli/src/lib.rs

@@ -111,6 +111,7 @@ struct TreeOptions {
         short,
         long,
         ignore_case = true,
+        conflicts_with = "invert",
         help = "Package to be used as the root of the tree"
     )]
     package: Option<String>,
@@ -119,6 +120,7 @@ struct TreeOptions {
         short,
         long,
         ignore_case = true,
+        conflicts_with = "package",
         help = "Invert the tree direction and focus on the given package",
         value_name = "PACKAGE"
     )]