From 5b8ead57a35b560af57b984d48d770d7c1dd94af Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Vladim=C3=ADr=20=C4=8Cun=C3=A1t?= <v@cunat.cz>
Date: Wed, 28 Sep 2022 18:44:38 +0200
Subject: [PATCH] valhalla: fixup paths in .pc file

---
 pkgs/development/libraries/valhalla/default.nix | 6 ++++++
 1 file changed, 6 insertions(+)

diff --git a/pkgs/development/libraries/valhalla/default.nix b/pkgs/development/libraries/valhalla/default.nix
index dded351d3105..1052277f6f37 100644
--- a/pkgs/development/libraries/valhalla/default.nix
+++ b/pkgs/development/libraries/valhalla/default.nix
@@ -34,6 +34,12 @@ stdenv.mkDerivation rec {
     "-DENABLE_BENCHMARKS=OFF"
   ];
 
+  postFixup = ''
+    substituteInPlace "$out"/lib/pkgconfig/libvalhalla.pc \
+      --replace '=''${prefix}//' '=/' \
+      --replace '=''${exec_prefix}//' '=/'
+  '';
+
   meta = with lib; {
     description = "Open Source Routing Engine for OpenStreetMap";
     homepage = "https://valhalla.readthedocs.io/";