Merge #8221

8221: Prefer adding `mod` declaration to lib.rs over file.rs in UnlinkedFile fix r=Veykril a=Veykril

When there is a `lib.rs` and `main.rs` in one crate, one usually wants the `lib.rs` file to declare the modules.
bors r+

Co-authored-by: Lukas Wirth <[email protected]>

Author: bors[bot]

crates/ide/src/diagnostics/unlinked_file.rs

@@ -63,7 +63,7 @@ impl DiagnosticWithFix for UnlinkedFile {
         // - `$dir.rs` in the parent folder, where `$dir` is the directory containing `self.file_id`
         let parent = our_path.parent()?;
         let mut paths =
-            vec![parent.join("mod.rs")?, parent.join("main.rs")?, parent.join("lib.rs")?];
+            vec![parent.join("mod.rs")?, parent.join("lib.rs")?, parent.join("main.rs")?];
 
         // `submod/bla.rs` -> `submod.rs`
         if let Some(newmod) = (|| {