refactor(tvix/store): remove use of lazy_static r/8825

This is now supported in the standard library via std::sync::LazyLock,
but requires some manual shuffling around of code.

Change-Id: Ifca792f4d2dbc36b703de4a4dfa406015ab86da7
Reviewed-on: https://cl.tvl.fyi/c/depot/+/12614
Autosubmit: flokli <flokli@flokli.de>
Reviewed-by: flokli <flokli@flokli.de>
Reviewed-by: edef <edef@edef.eu>
Tested-by: BuildkiteCI

1 files changed, 10 insertions, 11 deletions

diff --git a/tvix/store/src/composition.rs b/tvix/store/src/composition.rs
index a32f22cf7796..063236136fd1 100644
--- a/tvix/store/src/composition.rs
+++ b/tvix/store/src/composition.rs
@@ -1,17 +1,16 @@
-use lazy_static::lazy_static;
+use std::sync::LazyLock;
 
 pub use tvix_castore::composition::*;
 
-lazy_static! {
-    /// The provided registry of tvix_store, which has all the builtin
-    /// tvix_castore (BlobStore/DirectoryStore) and tvix_store
-    /// (PathInfoService) implementations.
-    pub static ref REG: Registry = {
-        let mut reg = Default::default();
-        add_default_services(&mut reg);
-        reg
-    };
-}
+/// The provided registry of tvix_store, which has all the builtin
+/// tvix_castore (BlobStore/DirectoryStore) and tvix_store
+/// (PathInfoService) implementations.
+pub static REG: LazyLock<&'static Registry> = LazyLock::new(|| {
+    let mut reg = Default::default();
+    add_default_services(&mut reg);
+    // explicitly leak to get an &'static, so that we gain `&Registry: Send` from `Registry: Sync`
+    Box::leak(Box::new(reg))
+});
 
 /// Register the builtin services of tvix_castore and tvix_store with the given
 /// registry. This is useful for creating your own registry with the builtin