From 8bfc662c08baf9357d31b44d9b24742e6b7e055e Mon Sep 17 00:00:00 2001
From: Alexis Hildebrandt <afh@surryhill.net>
Date: Mon, 19 Feb 2024 06:14:38 +0100
Subject: [PATCH] 7zz: add setup hook script to unpack DMG files

---
 pkgs/tools/archivers/7zz/default.nix   | 2 ++
 pkgs/tools/archivers/7zz/setup-hook.sh | 5 +++++
 2 files changed, 7 insertions(+)
 create mode 100644 pkgs/tools/archivers/7zz/setup-hook.sh

diff --git a/pkgs/tools/archivers/7zz/default.nix b/pkgs/tools/archivers/7zz/default.nix
index 48b072b0cf4b..a10283dc59f8 100644
--- a/pkgs/tools/archivers/7zz/default.nix
+++ b/pkgs/tools/archivers/7zz/default.nix
@@ -99,6 +99,8 @@ stdenv.mkDerivation (finalAttrs: {
 
   nativeBuildInputs = lib.optionals useUasm [ uasm ];
 
+  setupHook = ./setup-hook.sh;
+
   enableParallelBuilding = true;
 
   preBuild = "cd CPP/7zip/Bundles/Alone2";
diff --git a/pkgs/tools/archivers/7zz/setup-hook.sh b/pkgs/tools/archivers/7zz/setup-hook.sh
new file mode 100644
index 000000000000..97f2cc8a7694
--- /dev/null
+++ b/pkgs/tools/archivers/7zz/setup-hook.sh
@@ -0,0 +1,5 @@
+unpackCmdHooks+=(_tryUnpackDmg)
+_tryUnpackDmg() {
+    if ! [[ "$curSrc" =~ \.dmg$ ]]; then return 1; fi
+    7zz x "$curSrc"
+}