From 6949a664b7b45f21d3ee5aa1ce82a80cf02f66e1 Mon Sep 17 00:00:00 2001
From: Michael Roitzsch <reactorcontrol@icloud.com>
Date: Thu, 5 Nov 2020 21:19:56 +0100
Subject: [PATCH] flake: add dyld-shared-cache-util

---
 README.md |  3 +++
 flake.nix | 22 +++++++++++++++++++++-
 2 files changed, 24 insertions(+), 1 deletion(-)

diff --git a/README.md b/README.md
index a60c56f..4391137 100644
--- a/README.md
+++ b/README.md
@@ -10,6 +10,9 @@ following externally hosted tools:
 [**acextract**](https://github.com/bartoszj/acextract)  
 Unpacks asset catalogs to individual files.
 
+[**dyld-shared-cache-util**](https://github.com/antons/dyld-shared-cache-big-sur)  
+Extracts dynamic libraries from the dyld linker cache.
+
 [**snapUtil**](https://github.com/ahl/apfs)  
 Manages APFS snapshots.
 
diff --git a/flake.nix b/flake.nix
index 6c733fd..c37aa07 100644
--- a/flake.nix
+++ b/flake.nix
@@ -9,6 +9,10 @@
 			url = github:iHTCboy/CommandLine;
 			flake = false;
 		};
+		dyld-shared-cache = {
+			url = github:antons/dyld-shared-cache-big-sur;
+			flake = false;
+		};
 		snapshot-header = {
 			url = "https://opensource.apple.com/tarballs/xnu/xnu-6153.141.1.tar.gz";
 			flake = false;
@@ -18,7 +22,7 @@
 			flake = false;
 		};
 	};
-	outputs = { self, nixpkgs, acextract, command-line, snapshot-header, snap-util }: {
+	outputs = { self, nixpkgs, acextract, command-line, dyld-shared-cache, snapshot-header, snap-util }: {
 		acextract =
 			with import nixpkgs { system = "x86_64-darwin"; };
 			let xcode12 = makeSetupHook {
@@ -37,6 +41,22 @@
 				'';
 				dontStrip = true;
 			};
+		dyld-shared-cache =
+			with import nixpkgs { system = "x86_64-darwin"; };
+			stdenv.mkDerivation {
+				name = "dyld-shared-cache-util-${lib.substring 0 8 self.inputs.dyld-shared-cache.lastModifiedDate}";
+				src = dyld-shared-cache;
+				nativeBuildInputs = [ xcbuildHook ];
+				xcbuildFlags = [
+					"-scheme dyld_shared_cache_util"
+					"-configuration Release"
+					"GCC_PREPROCESSOR_DEFINITIONS=CC_DIGEST_DEPRECATION_WARNING=\\\"\\\""
+				];
+				installPhase = ''
+					mkdir -p $out/bin
+					cp Products/Release/{dsc_extractor.bundle,dyld_shared_cache_util} $out/bin/
+				'';
+			};
 		snap-util =
 			with import nixpkgs { system = "x86_64-darwin"; };
 			stdenv.mkDerivation {