From 61a1b20d23132639f556346d1a27436db506cc04 Mon Sep 17 00:00:00 2001
From: Daiderd Jordan <daiderd@gmail.com>
Date: Mon, 30 Jul 2018 23:25:33 +0200
Subject: [PATCH] doc: add darwin installCheckTarget example

---
 doc/platform-notes.xml | 32 ++++++++++++++++++++++++++++++++
 1 file changed, 32 insertions(+)

diff --git a/doc/platform-notes.xml b/doc/platform-notes.xml
index b2c20c2d35c0..ea581421547d 100644
--- a/doc/platform-notes.xml
+++ b/doc/platform-notes.xml
@@ -29,6 +29,7 @@
       }
     </programlisting>
    </listitem>
+
    <listitem>
     <para>
      On darwin libraries are linked using absolute paths, libraries are
@@ -46,6 +47,37 @@
       }
     </programlisting>
    </listitem>
+
+   <listitem>
+    <para>
+     Even if the libraries are linked using absolute paths and resolved via
+     their <literal>install_name</literal> correctly, tests can sometimes fail
+     to run binaries.  This happens because the <varname>checkPhase</varname>
+     runs before the libraries are installed.
+    </para>
+    <para>
+     This can usually be solved by running the tests after the
+     <varname>installPhase</varname> or alternatively by using
+     <varname>DYLD_LIBRARY_PATH</varname>. More information about this variable
+     can be found in the <citerefentry><refentrytitle>dyld</refentrytitle>
+     <manvolnum>1</manvolnum></citerefentry> manpage.
+    </para>
+<programlisting>
+      dyld: Library not loaded: /nix/store/7hnmbscpayxzxrixrgxvvlifzlxdsdir-jq-1.5-lib/lib/libjq.1.dylib
+      Referenced from: /private/tmp/nix-build-jq-1.5.drv-0/jq-1.5/tests/../jq
+      Reason: image not found
+      ./tests/jqtest: line 5: 75779 Abort trap: 6
+    </programlisting>
+<programlisting>
+      stdenv.mkDerivation {
+        name = "libfoo-1.2.3";
+        # ...
+        doInstallCheck = true;
+        installCheckTarget = "check";
+      }
+    </programlisting>
+   </listitem>
+
    <listitem>
     <para>
      Some packages assume xcode is available and use <command>xcrun</command>