Fix cross device link during install

Cargo.toml

@@ -1,6 +1,6 @@
 [package]
 name = "ozy"
-version = "0.1.12"
+version = "0.1.13"
 edition = "2021"
 
 # See more keys and their definitions at https://doc.rust-lang.org/cargo/reference/manifest.html

RELEASE_NOTES.md

@@ -2,6 +2,9 @@
 
 All changes are in the [Releases](https://github.com/aquanauts/ozy/releases).
 
+### [0.1.13](https://github.com/aquanauts/ozy/releases/tag/v0.1.13)
+* Fix cross device link during install
+
 ### [0.1.12](https://github.com/aquanauts/ozy/releases/tag/v0.1.12)
 * Mostly a test of the release process post deletion of python code
 * Changes to version output.

src/main.rs

@@ -21,7 +21,14 @@ fn symlink_binaries(path_to_ozy: &std::path::PathBuf, config: &serde_yaml::Mappi
     // If this binary isn't installed in the correct location, move it there
     let expected_path_to_ozy = files::get_ozy_bin_dir()?.join("ozy");
     if path_to_ozy != &expected_path_to_ozy {
-        std::fs::rename(path_to_ozy, expected_path_to_ozy)?;
+        // attempt to rename (same filesystem), but fall back to copy and remove (different filesystem)
+        match std::fs::rename(path_to_ozy, expected_path_to_ozy.clone()) {
+            Ok(_) => {},
+            Err(_) => {
+                std::fs::copy(path_to_ozy, expected_path_to_ozy)?;
+                std::fs::remove_file(path_to_ozy)?;
+            },
+        }
     }
 
     let app_configs = match config.get("apps") {