sit: better fix for aarch64 bug

pkgs/applications/version-management/sit/aarch64-eexist.patch

@@ -1,17 +0,0 @@
-diff --git a/sit-core/src/repository.rs b/sit-core/src/repository.rs
-index ebd357d..074dcc9 100644
---- a/sit-core/src/repository.rs
-+++ b/sit-core/src/repository.rs
-@@ -305,6 +305,12 @@ impl Repository {
-         let id: String = name.into();
-         let mut path = self.items_path.clone();
-         path.push(&id);
-+        #[cfg(all(debug_assertions, target_arch = "aarch64"))] {
-+          use std::io;
-+          if path.is_dir() {
-+             return Err(io::Error::from_raw_os_error(17).into()); // 17 is EEXIST
-+          }
-+        }
-         fs::create_dir(path)?;
-         let id = OsString::from(id);
-         Ok(Item {

pkgs/applications/version-management/sit/aarch64-isel.patch

@@ -0,0 +1,9 @@
+diff --git a/.cargo/config b/.cargo/config
+new file mode 100644
+index 0000000..15e7649
+--- /dev/null
++++ b/.cargo/config
+@@ -0,0 +1,3 @@
++# https://github.com/rust-lang/rust/issues/50516
++[target.'cfg(all(debug_assertions, target_arch = "aarch64"))']
++rustflags = ["-C", "llvm-args=-fast-isel"]

pkgs/applications/version-management/sit/default.nix

@@ -15,7 +15,7 @@ rustPlatform.buildRustPackage rec {
 
   cargoSha256 = "102haqix13nwcncng1s8qkw68spn6fhh3vysk2nbahw6f78zczqg";
 
-  patches = [ ./aarch64-eexist.patch ];
+  patches = [ ./aarch64-isel.patch ];
 
   meta = with stdenv.lib; {
     description = "Serverless Information Tracker";