The setuid helper of D-Bus is responsible for "service activation".
It looks for '.service' files in fixed locations, but the default locations
make no sense (see below), so replace them with /etc/dbus-1/system-services.

--- dbus-1.10.0/dbus/dbus-sysdeps-util-unix.c	2015-10-22 00:07:03.829251854 +0200
+++ dbus-1.10.0/dbus/dbus-sysdeps-util-unix.c	2015-10-22 00:07:14.893445175 +0200
@@ -1410,10 +1410,7 @@ _dbus_get_standard_system_servicedirs (D
    * be available.
    */
   static const char standard_search_path[] =
-    "/usr/local/share:"
-    "/usr/share:"
-    DBUS_DATADIR ":"
-    "/lib";
+    "/etc";
   DBusString servicedir_path;
 
   _dbus_string_init_const (&servicedir_path, standard_search_path);
'this.form.submit();'>
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<tr><td class='sub'>Wojtek's customized Guix</td><td class='sub right'></td></tr></table>
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<a href='/guix/about/'>about</a><a href='/guix/'>summary</a><a href='/guix/refs/?id=d81329763459ebf41a7fe93d23fc441a00968d92'>refs</a><a class='active' href='/guix/log/gnu/build/cross-toolchain.scm'>log</a><a href='/guix/tree/gnu/build/cross-toolchain.scm?id=d81329763459ebf41a7fe93d23fc441a00968d92'>tree</a><a href='/guix/commit/gnu/build/cross-toolchain.scm?id=d81329763459ebf41a7fe93d23fc441a00968d92'>commit</a><a href='/guix/diff/gnu/build/cross-toolchain.scm?id=d81329763459ebf41a7fe93d23fc441a00968d92'>diff</a></td><td class='form'><form class='right' method='get' action='/guix/log/gnu/build/cross-toolchain.scm'>
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<div class='path'>path: <a href='/guix/log/?id=d81329763459ebf41a7fe93d23fc441a00968d92'>root</a>/<a href='/guix/log/gnu?id=d81329763459ebf41a7fe93d23fc441a00968d92'>gnu</a>/<a href='/guix/log/gnu/build?id=d81329763459ebf41a7fe93d23fc441a00968d92'>build</a>/<a href='/guix/log/gnu/build/cross-toolchain.scm?id=d81329763459ebf41a7fe93d23fc441a00968d92'>cross-toolchain.scm</a></div><div class='content'><table class='list nowrap'><tr class='nohover'><th class=<tr><td><span title='2022-10-22 01:46:55 +0200'>2022-10-22</span></td><td><a href='/guix/commit/tests/monads.scm?id=a3619079f95213c4f983e69210ed12b38fd31022'>Remove now unnecessary uses of (guix grafts).</a><span class='msg-avail'>...<span class='msg-tooltip'>These modules would use (guix grafts) just to access '%graft?' and
related bindings, which are now in (guix store).

* gnu/ci.scm,
guix/gexp.scm,
guix/lint.scm,
guix/scripts.scm,
guix/scripts/archive.scm,
guix/scripts/build.scm,
guix/scripts/challenge.scm,
guix/scripts/deploy.scm,
guix/scripts/environment.scm,
guix/scripts/home.scm,
guix/scripts/pack.scm,
guix/scripts/package.scm,
guix/scripts/pull.scm,
guix/scripts/size.scm,
guix/scripts/system.scm,
guix/scripts/weather.scm,
tests/builders.scm,
tests/channels.scm,
tests/cpan.scm,
tests/derivations.scm,
tests/gexp.scm,
tests/graph.scm,
tests/guix-daemon.sh,
tests/monads.scm,
tests/pack.scm,
tests/packages.scm,
tests/profiles.scm,
tests/system.scm: Remove #:use-module (guix grafts).
</span></span></td><td>Ludovic Courtès</td></tr>
<tr><td><span title='2022-07-10 23:57:14 +0200'>2022-07-10</span></td><td><a href='/guix/commit/tests/monads.scm?id=9fdc4b6c283c5aa5cf10205d87fb2c58b829b9d0'>monads: Add 'mparameterize'.</a><span class='msg-avail'>...<span class='msg-tooltip'>* etc/system-tests.scm (mparameterize): Move to...
* guix/monads.scm (mparameterize): ... here.
* tests/monads.scm ("mparameterize"): New test.
* .dir-locals.el (c-mode): Add it.
</span></span></td><td>Ludovic Courtès</td></tr>