From b390eb96c268da8057863fe31903e4dafa57ed01 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Vladim=C3=ADr=20=C4=8Cun=C3=A1t?= <v@cunat.cz>
Date: Sat, 16 Jul 2022 11:37:20 +0200
Subject: [PATCH] bzip2: fix hardcoded version

---
 pkgs/tools/compression/bzip2/default.nix | 13 +++++++++++++
 1 file changed, 13 insertions(+)

diff --git a/pkgs/tools/compression/bzip2/default.nix b/pkgs/tools/compression/bzip2/default.nix
index dafd6a6070df..3b48195d11d6 100644
--- a/pkgs/tools/compression/bzip2/default.nix
+++ b/pkgs/tools/compression/bzip2/default.nix
@@ -25,6 +25,19 @@ stdenv.mkDerivation rec {
       sha256 = "sha256-QMufl6ffJVVVVZespvkCbFpB6++R1lnq1687jEsUjr0=";
     })
   ];
+  # Fix up hardcoded version from the above patch, e.g. seen in bzip2.pc or libbz2.so.1.0.N
+  postPatch = ''
+    patch <<-EOF
+      --- configure.ac
+      +++ configure.ac
+      @@ -3,3 +3,3 @@
+      -AC_INIT([bzip2], [1.0.6], [Julian Seward <jseward@bzip.org>])
+      +AC_INIT([bzip2], [${version}], [Julian Seward <jseward@bzip.org>])
+       BZIP2_LT_CURRENT=1
+      -BZIP2_LT_REVISION=6
+      +BZIP2_LT_REVISION=${lib.versions.patch version}
+    EOF
+  '';
 
   strictDeps = true;
   nativeBuildInputs = [ autoreconfHook ];