From 72820bf48af0f6dd977e21b7004129b339904d34 Mon Sep 17 00:00:00 2001
From: Adrian Wannenmacher <tfld@tfld.dev>
Date: Tue, 27 Jun 2023 23:30:19 +0200
Subject: [PATCH] use hard-linking or copying instead of renaming

---
 src/main.rs | 12 +++++++++++-
 1 file changed, 11 insertions(+), 1 deletion(-)

diff --git a/src/main.rs b/src/main.rs
index e8c59f3..b9dcd7c 100644
--- a/src/main.rs
+++ b/src/main.rs
@@ -96,7 +96,17 @@ fn main() -> anyhow::Result<()> {
                         }
                     })
                     .and_then(|target| {
-                        fs::rename(&res.file_name, target).context("failed to move cached result")
+                        fs::hard_link(&res.file_name, &target)
+                            .context("failed to hard-link result") // for same type as below
+                            .or_else(|_| {
+                                fs::copy(&res.file_name, &target)
+                                    .map(|_| ())
+                                    .context("failed to copy result")
+                            })
+                            .and_then(|_| {
+                                fs::remove_file(&res.file_name)
+                                    .context("failed to delete cached result")
+                            })
                     });
 
                 if let Err(err) = res {