fix(packager): rename main bin name for AppImage if it has spaces

.changes/appimage-spaces.md

@@ -0,0 +1,5 @@
+---
+"cargo-packager": patch
+---
+
+Fix AppImage bundle when main binary name has spaces.

crates/packager/src/config/category.rs

@@ -248,7 +248,7 @@ struct AppCategoryVisitor {
     did_you_mean: Option<&'static str>,
 }
 
-impl<'d> serde::de::Visitor<'d> for AppCategoryVisitor {
+impl serde::de::Visitor<'_> for AppCategoryVisitor {
     type Value = AppCategory;
 
     fn expecting(&self, formatter: &mut fmt::Formatter<'_>) -> fmt::Result {

crates/packager/src/config/mod.rs

@@ -1820,6 +1820,14 @@ impl Config {
             .ok_or_else(|| crate::Error::MainBinaryNotFound)
     }
 
+    /// Returns a mutable reference to the main binary.
+    pub fn main_binary_mut(&mut self) -> crate::Result<&mut Binary> {
+        self.binaries
+            .iter_mut()
+            .find(|bin| bin.main)
+            .ok_or_else(|| crate::Error::MainBinaryNotFound)
+    }
+
     /// Returns the main binary name.
     pub fn main_binary_name(&self) -> crate::Result<String> {
         self.binaries

crates/packager/src/package/appimage/mod.rs

@@ -72,6 +72,20 @@ pub(crate) fn package(ctx: &Context) -> crate::Result<Vec<PathBuf>> {
         ..
     } = ctx;
 
+    let mut config = config.clone();
+    let main_binary_name = config.main_binary_name()?;
+
+    // if binary file name contains spaces, we must change it to kebab-case
+    if main_binary_name.contains(' ') {
+        let main_binary = config.main_binary_mut()?;
+
+        let main_binary_name_kebab = heck::AsKebabCase(main_binary_name).to_string();
+        let new_path = intermediates_path.join(&main_binary_name_kebab);
+        fs::copy(&main_binary.path, &new_path)?;
+
+        main_binary.path = new_path;
+    }
+
     // generate the deb binary name
     let (arch, linuxdeploy_arch) = match config.target_arch()? {
         "x86" => ("i686", "i386"),
@@ -90,7 +104,7 @@ pub(crate) fn package(ctx: &Context) -> crate::Result<Vec<PathBuf>> {
 
     // generate deb_folder structure
     tracing::debug!("Generating data");
-    let icons = deb::generate_data(config, &appimage_deb_data_dir)?;
+    let icons = deb::generate_data(&config, &appimage_deb_data_dir)?;
     tracing::debug!("Copying files specified in `appimage.files`");
     if let Some(files) = config.appimage().and_then(|d| d.files.as_ref()) {
         deb::copy_custom_files(files, &appimage_deb_data_dir)?;