From 269b95810b022a9728611bb31ecddceacf90e3d9 Mon Sep 17 00:00:00 2001
From: Bart Brouns <bart@magnetophon.nl>
Date: Fri, 5 Jun 2020 13:27:25 +0200
Subject: [PATCH] sorcer: fix build with lv2 1.18.0

---
 pkgs/applications/audio/sorcer/default.nix | 6 ++++++
 1 file changed, 6 insertions(+)

diff --git a/pkgs/applications/audio/sorcer/default.nix b/pkgs/applications/audio/sorcer/default.nix
index 7601f942868f..ad5f8fda1a99 100644
--- a/pkgs/applications/audio/sorcer/default.nix
+++ b/pkgs/applications/audio/sorcer/default.nix
@@ -14,6 +14,12 @@ stdenv.mkDerivation rec {
   nativeBuildInputs = [ pkgconfig ];
   buildInputs = [ boost cairomm cmake libsndfile lv2 ntk python ];
 
+  postPatch = ''
+     # Fix build with lv2 1.18: https://github.com/brummer10/guitarix/commit/c0334c72
+     find . -type f -exec fgrep -q LV2UI_Descriptor {} \; \
+       -exec sed -i {} -e 's/const struct _\?LV2UI_Descriptor/const LV2UI_Descriptor/' \;
+   '';
+
   installPhase = ''
     make install
     cp -a ../presets/* "$out/lib/lv2"