feat(tvix): Jemalloc -> MiMalloc

Use the faster and newer MiMalloc memory allocator for all endpoints in
the workspace.

Change-Id: Ic60237284ed168e46ec6e8f28e2710bae4385c6f
Reviewed-on: https://cl.tvl.fyi/c/depot/+/12149
Tested-by: BuildkiteCI
Reviewed-by: aspen <root@gws.fyi>

tvix/nix-compat/Cargo.toml

@@ -20,6 +20,7 @@ ed25519 = "2.2.3"
 ed25519-dalek = "2.1.0"
 enum-primitive-derive = "0.3.0"
 glob = "0.3.0"
+mimalloc = "0.1.43"
 nom = "7.1.3"
 num-traits = "0.2.18"
 serde = { version = "1.0", features = ["derive"] }
@@ -41,6 +42,7 @@ criterion = { version = "0.5", features = ["html_reports"] }
 futures = { version = "0.3.30", default-features = false, features = ["executor"] }
 hex-literal = "0.4.1"
 lazy_static = "1.4.0"
+mimalloc = "0.1.43"
 pretty_assertions = "1.4.0"
 rstest = "0.19.0"
 serde_json = "1.0"

tvix/nix-compat/benches/derivation_parse_aterm.rs

@@ -1,8 +1,12 @@
 use std::path::Path;
 
 use criterion::{black_box, criterion_group, criterion_main, Criterion};
+use mimalloc::MiMalloc;
 use nix_compat::derivation::Derivation;
 
+#[global_allocator]
+static GLOBAL: MiMalloc = MiMalloc;
+
 const RESOURCES_PATHS: &str = "src/derivation/tests/derivation_tests/ok";
 
 fn bench_aterm_parser(c: &mut Criterion) {

tvix/nix-compat/benches/narinfo_parse.rs

@@ -1,8 +1,12 @@
 use criterion::{black_box, criterion_group, criterion_main, Criterion, Throughput};
 use lazy_static::lazy_static;
+use mimalloc::MiMalloc;
 use nix_compat::narinfo::NarInfo;
 use std::{io, str};
 
+#[global_allocator]
+static GLOBAL: MiMalloc = MiMalloc;
+
 const SAMPLE: &str = r#"StorePath: /nix/store/1pajsq519irjy86vli20bgq1wr1q3pny-banking-0.3.0
 URL: nar/0rdn027rxqbl42bv9jxhsipgq2hwqdapvwmdzligmzdmz2p9vybs.nar.xz
 Compression: xz

tvix/nix-compat/src/bin/drvfmt.rs

@@ -3,6 +3,11 @@ use std::{collections::BTreeMap, io::Read};
 use nix_compat::derivation::Derivation;
 use serde_json::json;
 
+use mimalloc::MiMalloc;
+
+#[global_allocator]
+static GLOBAL: MiMalloc = MiMalloc;
+
 /// construct a serde_json::Value from a Derivation.
 /// Some environment values can be non-valid UTF-8 strings.
 /// `serde_json` prints them out really unreadable.