From 75642724eff74b689fed49fcc4143ba9568eed3a Mon Sep 17 00:00:00 2001
From: James Eapen <james.eapen@vai.org>
Date: Thu, 19 Feb 2026 10:26:42 -0500
Subject: [PATCH] htslib: add libdeflate as a build dependency

From the htslib INSTALL page:
'libdeflate (optional, but strongly recommended for faster gzip)'
(https://github.com/samtools/htslib/blob/acc28ac1e52efcdd9a06706aaf0021e1082ef1ba/INSTALL#L41C1-L41C68)

Using libdeflate significantly speeds up tabix query operations.
---
 pkgs/by-name/ht/htslib/package.nix | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/pkgs/by-name/ht/htslib/package.nix b/pkgs/by-name/ht/htslib/package.nix
index c65baa3ff342..fdb42b4f3c14 100644
--- a/pkgs/by-name/ht/htslib/package.nix
+++ b/pkgs/by-name/ht/htslib/package.nix
@@ -7,6 +7,7 @@
   bzip2,
   xz,
   curl,
+  libdeflate,
   perl,
 }:
 
@@ -34,6 +35,7 @@ stdenv.mkDerivation (finalAttrs: {
     bzip2
     xz
     curl
+    libdeflate
   ];
 
   configureFlags =