refactor(tvix/nix-compat): remove use of lazy_static r/8802

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

I found at least one dead variable along the way, which I deleted.

Change-Id: I8600c87c49078fb5ff72671994c77b919259e67b
Reviewed-on: https://cl.tvl.fyi/c/depot/+/12608
Reviewed-by: flokli <flokli@flokli.de>
Tested-by: BuildkiteCI
Autosubmit: tazjin <tazjin@tvl.su>

1 files changed, 13 insertions, 15 deletions

diff --git a/tvix/nix-compat/src/narinfo/mod.rs b/tvix/nix-compat/src/narinfo/mod.rs
index 21aecf80b5a2..35146a927b39 100644
--- a/tvix/nix-compat/src/narinfo/mod.rs
+++ b/tvix/nix-compat/src/narinfo/mod.rs
@@ -417,8 +417,8 @@ const DUMMY_VERIFYING_KEY: &str =
 #[cfg(test)]
 mod test {
     use hex_literal::hex;
-    use lazy_static::lazy_static;
     use pretty_assertions::assert_eq;
+    use std::sync::LazyLock;
     use std::{io, str};
 
     use crate::{
@@ -428,20 +428,18 @@ mod test {
 
     use super::{Flags, NarInfo};
 
-    lazy_static! {
-        static ref CASES: &'static [&'static str] = {
-            let data = zstd::decode_all(io::Cursor::new(include_bytes!(
-                "../../testdata/narinfo.zst"
-            )))
-            .unwrap();
-            let data = str::from_utf8(Vec::leak(data)).unwrap();
-            Vec::leak(
-                data.split_inclusive("\n\n")
-                    .map(|s| s.strip_suffix('\n').unwrap())
-                    .collect::<Vec<_>>(),
-            )
-        };
-    }
+    static CASES: LazyLock<&'static [&'static str]> = LazyLock::new(|| {
+        let data = zstd::decode_all(io::Cursor::new(include_bytes!(
+            "../../testdata/narinfo.zst"
+        )))
+        .unwrap();
+        let data = str::from_utf8(Vec::leak(data)).unwrap();
+        Vec::leak(
+            data.split_inclusive("\n\n")
+                .map(|s| s.strip_suffix('\n').unwrap())
+                .collect::<Vec<_>>(),
+        )
+    });
 
     #[test]
     fn roundtrip() {