From e67b7858e688e31db17fb94d2aeaa0131f0ee61c Mon Sep 17 00:00:00 2001
From: bojanserafimov <bojan.serafimov7@gmail.com>
Date: Tue, 9 Jan 2024 16:13:36 -0500
Subject: [PATCH] Use zlib-ng for faster decompression (#859)

---
 Cargo.lock | 20 ++++++++++++++++++++
 Cargo.toml |  5 ++++-
 2 files changed, 24 insertions(+), 1 deletion(-)

diff --git a/Cargo.lock b/Cargo.lock
index 16aa771e3..82888df9e 100644
--- a/Cargo.lock
+++ b/Cargo.lock
@@ -557,6 +557,15 @@ version = "0.6.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "702fc72eb24e5a1e48ce58027a675bc24edd52096d5397d4aea7c6dd9eca0bd1"
 
+[[package]]
+name = "cmake"
+version = "0.1.50"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "a31c789563b815f77f4250caee12365734369f942439b7defd71e18a48197130"
+dependencies = [
+ "cc",
+]
+
 [[package]]
 name = "colorchoice"
 version = "1.0.0"
@@ -922,6 +931,7 @@ source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "46303f565772937ffe1d394a4fac6f411c6013172fadde9dcdb1e147a086940e"
 dependencies = [
  "crc32fast",
+ "libz-ng-sys",
  "miniz_oxide",
 ]
 
@@ -1655,6 +1665,16 @@ dependencies = [
  "vcpkg",
 ]
 
+[[package]]
+name = "libz-ng-sys"
+version = "1.1.14"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "81157dde2fd4ad2b45ea3a4bb47b8193b52a6346b678840d91d80d3c2cd166c5"
+dependencies = [
+ "cmake",
+ "libc",
+]
+
 [[package]]
 name = "libz-sys"
 version = "1.1.12"
diff --git a/Cargo.toml b/Cargo.toml
index 9228fca79..f74838c44 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -30,7 +30,10 @@ data-encoding = { version = "2.5.0" }
 derivative = { version = "2.2.0" }
 directories = { version = "5.0.1" }
 dirs = { version = "5.0.1" }
-flate2 = { version = "1.0.28" }
+# This tells flate2 (and all libraries that depend on it, including async_compression
+# and async_zip) to use zlib-ng, which about 2x faster than the default flate2 backend
+# at decompression. See https://github.com/rust-lang/flate2-rs#backends
+flate2 = { version = "1.0.28", features = ["zlib-ng"], default-features = false }
 fs-err = { version = "2.11.0" }
 fs2 = { version = "0.4.3" }
 futures = { version = "0.3.30" }