libpipeline: apply gnulib.passthru.longdouble-redirect-patch

pkgs/development/libraries/libpipeline/default.nix

···
-{ lib, stdenv, fetchurl }:
+{ lib, stdenv, fetchurl
+, gnulib
+, runCommand
+, patchutils }:
 
 stdenv.mkDerivation rec {
   pname = "libpipeline";
···
     sha256 = "sha256-uLRRlJiQIqeewTF/ZKKnWxVRsqVb6gb2dwTLKi5GkLA=";
   };
 
-  patches = lib.optionals stdenv.isDarwin [ ./fix-on-osx.patch ];
+  patches = lib.optionals stdenv.isDarwin [
+    ./fix-on-osx.patch
+  ] ++ [
+    (runCommand "longdouble-redirect-patch-extraPrefix" {} ''
+      ${patchutils}/bin/filterdiff \
+        --strip=1 \
+        --addoldprefix=a/gl/ \
+        --addnewprefix=b/gl/ \
+        ${gnulib.passthru.longdouble-redirect-patch} \
+        > $out
+    '')
+  ];
 
   meta = with lib; {
     homepage = "http://libpipeline.nongnu.org";