feat(nix-compat/store_path): derive [Partial]Eq

This allows comparing StorePathRef structs.

Change-Id: Ia69967ea9358052e2d6e76042a7e6d394f7f29a9
Reviewed-on: https://cl.tvl.fyi/c/depot/+/10386
Tested-by: BuildkiteCI
Autosubmit: flokli <flokli@flokli.de>
Reviewed-by: edef <edef@edef.eu>

tvix/nix-compat/src/store_path/mod.rs

@@ -138,7 +138,7 @@ impl StorePath {
 /// Used by [StorePath] for parsing.
 ///
 /// TODO(edef): migrate most methods here
-#[derive(Debug)]
+#[derive(Debug, Eq, PartialEq)]
 pub struct StorePathRef<'a> {
     digest: [u8; DIGEST_SIZE],
     name: &'a str,