From 84bd2f4ab04b8b53718db6b5ba208a62ae083941 Mon Sep 17 00:00:00 2001
From: Daiderd Jordan <daiderd@gmail.com>
Date: Fri, 22 Sep 2017 23:12:12 +0200
Subject: [PATCH] lmdb: fix library id on darwin

---
 pkgs/development/libraries/lmdb/default.nix | 12 +++---------
 1 file changed, 3 insertions(+), 9 deletions(-)

diff --git a/pkgs/development/libraries/lmdb/default.nix b/pkgs/development/libraries/lmdb/default.nix
index 30703fc7e3ed..d96b5ed6d520 100644
--- a/pkgs/development/libraries/lmdb/default.nix
+++ b/pkgs/development/libraries/lmdb/default.nix
@@ -1,7 +1,6 @@
 { stdenv, fetchFromGitHub }:
 
-let optional = stdenv.lib.optional;
-in stdenv.mkDerivation rec {
+stdenv.mkDerivation rec {
   name = "lmdb-${version}";
   version = "0.9.21";
 
@@ -16,7 +15,8 @@ in stdenv.mkDerivation rec {
 
   outputs = [ "bin" "out" "dev" ];
 
-  makeFlags = [ "prefix=$(out)" "CC=cc" ];
+  makeFlags = [ "prefix=$(out)" "CC=cc" ]
+    ++ stdenv.lib.optional stdenv.isDarwin "LDFLAGS=-Wl,-install_name,$(out)/lib/liblmdb.so";
 
   doCheck = true;
   checkPhase = "make test";
@@ -25,12 +25,6 @@ in stdenv.mkDerivation rec {
     moveToOutput bin "$bin"
     moveToOutput "lib/*.a" REMOVE # until someone needs it
   ''
-
-    # fix bogus library name
-    + stdenv.lib.optionalString stdenv.isDarwin ''
-    mv "$out"/lib/liblmdb.{so,dylib}
-    ''
-
     # add lmdb.pc (dynamic only)
     + ''
     mkdir -p "$dev/lib/pkgconfig"