Use RUNPATH instead of RPATH so that end users can override the library
search path (and the 'validate-runpath' phase can do its work).

diff --git a/build/config/gcc/BUILD.gn b/build/config/gcc/BUILD.gn
--- a/build/config/gcc/BUILD.gn
+++ b/build/config/gcc/BUILD.gn
@@ -99,7 +99,14 @@ config("executable_config") {
     ]
   }
 
-  if (!is_android && current_os != "aix") {
+  if (is_linux) {
+    ldflags += [
+      # Set DT_RUNPATH instead of DT_RPATH which is important because the
+      # former can be overridden at runtime, and Guix has support for
+      # verifying that nothing is missing.
+      "-Wl,--enable-new-dtags",
+    ]
+  } else if (!is_android && current_os != "aix") {
     ldflags += [
       # TODO(GYP): Do we need a check on the binutils version here?
       #
n value='koszko-scripts'>koszko-scripts</option>
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<div class='path'>path: <a href='/guix/log/?id=f63f524053a9a8503bf98532b6b3d91b17c1d7c0'>root</a>/<a href='/guix/log/gnu?id=f63f524053a9a8503bf98532b6b3d91b17c1d7c0'>gnu</a>/<a href='/guix/log/gnu/packages?id=f63f524053a9a8503bf98532b6b3d91b17c1d7c0'>packages</a>/<a href='/guix/log/gnu/packages/pantheon.scm?id=f63f524053a9a8503bf98532b6b3d91b17c1d7c0'>pantheon.scm</a></div><div class='content'><table class='list nowrap'><tr class='nohover'><th class='left'>Age</th><th class='left'>Commit message (<a href='/guix/log/gnu/packages/pantheon.scm?id=f63f524053a9a8503bf98532b6b3d91b17c1d7c0&amp;showmsg=1'>Expand</a>)</th><th class='left'>Author</th></tr>
<tr><td><span title='2020-11-03 11:58:01 +0100'>2020-11-03</span></td><td><a href='/guix/commit/gnu/packages/pantheon.scm?id=51482b93b66cb07a725ab2b934a903cf242adcbb'>gnu: granite: Upgrade to 5.5.0.</a><span class='msg-avail'>...<span class='msg-tooltip'>* gnu/packages/pantheon.scm (granite): Upgrade to 5.5.0.

Signed-off-by: Ludovic Courtès &lt;ludo@gnu.org&gt;
</span></span></td><td>Ryan Prior</td></tr>
><td><a href='/guix/commit/gnu/packages/mastodon.scm?id=069da2433e429a6b9b2a0d2a4bea40418d465c4d'>gnu: Add python-mastodon-py.</a><span class='msg-avail'>...<span class='msg-tooltip'>* gnu/packages/mastodon.scm (python-mastodon-py): New variable.
</span></span></td><td>Efraim Flashner</td></tr>
<tr><td><span title='2020-06-30 09:45:44 +0300'>2020-06-30</span></td><td><a href='/guix/commit/gnu/packages/mastodon.scm?id=a9ff5b72a69a9d97a0f0ae59f24956df0600ef3f'>gnu: toot: Update to 0.27.0.</a><span class='msg-avail'>...<span class='msg-tooltip'>* gnu/packages/mastodon.scm (toot): Update to 0.27.0.
</span></span></td><td>Efraim Flashner</td></tr>
<tr><td><span title='2020-04-16 22:40:39 +0300'>2020-04-16</span></td><td><a href='/guix/commit/gnu/packages/mastodon.scm?id=e40e7fdf0971feaecd622e927a92929c7b03d681'>gnu: toot: Update to 0.26.0.</a><span class='msg-avail'>...<span class='msg-tooltip'>* gnu/packages/mastodon.scm (toot): Update to 0.26.0.
</span></span></td><td>Efraim Flashner</td></tr>