From 5e074f10e1edd6684eb3d8c2cf924e2f265ff0cf Mon Sep 17 00:00:00 2001
From: Nikolay Amiantov <ab@fmap.me>
Date: Sat, 11 Feb 2017 02:40:13 +0300
Subject: [PATCH] postgresql: remove redundant static libraries

---
 pkgs/servers/sql/postgresql/default.nix | 8 ++++++++
 1 file changed, 8 insertions(+)

diff --git a/pkgs/servers/sql/postgresql/default.nix b/pkgs/servers/sql/postgresql/default.nix
index a94d8d101d20..50101fc5ce82 100644
--- a/pkgs/servers/sql/postgresql/default.nix
+++ b/pkgs/servers/sql/postgresql/default.nix
@@ -56,6 +56,14 @@ let
 
         # Prevent a retained dependency on gcc-wrapper.
         substituteInPlace "$out/lib/pgxs/src/Makefile.global" --replace ${stdenv.cc}/bin/ld ld
+
+        # Remove static libraries in case dynamic are available.
+        for i in $out/lib/*.a; do
+          name="$(basename "$i")"
+          if [ -e "$lib/lib/''${name%.a}.so" ] || [ -e "''${i%.a}.so" ]; then
+            rm "$i"
+          fi
+        done
       '';
 
     postFixup = lib.optionalString (!stdenv.isDarwin)