From 9ef62950cba8f539318bdc1707770ef6dd575c45 Mon Sep 17 00:00:00 2001
From: Vincent Laporte <Vincent.Laporte@gmail.com>
Date: Fri, 11 Feb 2022 07:34:59 +0100
Subject: [PATCH] ocamlPackages.piqi: fix build

---
 pkgs/development/ocaml-modules/piqi/default.nix | 10 ++--------
 1 file changed, 2 insertions(+), 8 deletions(-)

diff --git a/pkgs/development/ocaml-modules/piqi/default.nix b/pkgs/development/ocaml-modules/piqi/default.nix
index 84ccc469f6e5..faeb804d8aa8 100644
--- a/pkgs/development/ocaml-modules/piqi/default.nix
+++ b/pkgs/development/ocaml-modules/piqi/default.nix
@@ -19,15 +19,9 @@ stdenv.mkDerivation rec {
 
   createFindlibDestdir = true;
 
-  buildPhase = ''
-    make
-    make -C piqilib piqilib.cma
-  '';
+  postBuild = "make -C piqilib piqilib.cma";
 
-  installPhase = ''
-    make install;
-    make ocaml-install;
-  '';
+  installTargets = [ "install" "ocaml-install" ];
 
   meta = with lib; {
     homepage = "https://piqi.org";