add change file

.changes/app-bundle-cross-platform.md

@@ -0,0 +1,5 @@
+---
+"cargo-packager": minor
+---
+
+Allow packaging the macOS app bundle on Linux and Windows hosts (without codesign support).

.changes/package-output-struct-refactor.md

@@ -0,0 +1,5 @@
+---
+"cargo-packager": minor
+---
+
+Renamed `PackageOuput` to `PackageOutput` and added `PackageOutput::new`.

crates/packager/src/package/mod.rs

@@ -43,13 +43,24 @@ mod context;
 
 /// Generated Package metadata.
 #[derive(Debug, Clone)]
+#[non_exhaustive]
 pub struct PackageOutput {
     /// The package type.
     pub format: PackageFormat,
     /// All paths for this package.
     pub paths: Vec<PathBuf>,
 }
 
+impl PackageOutput {
+    /// Creates a new package output.
+    ///
+    /// This is only useful if you need to sign the packages in a different process,
+    /// after packaging the app and storing its paths.
+    pub fn new(format: PackageFormat, paths: Vec<PathBuf>) -> Self {
+        Self { format, paths }
+    }
+}
+
 /// Package an app using the specified config.
 #[tracing::instrument(level = "trace")]
 pub fn package(config: &Config) -> crate::Result<Vec<PackageOutput>> {