Add placeholder for kinit's store file name.

diff --git a/src/kdeinitinterface.cpp b/src/kdeinitinterface.cpp
index 22fa5e5..3d40937 100644
--- a/src/kdeinitinterface.cpp
+++ b/src/kdeinitinterface.cpp
@@ -52,7 +52,7 @@ void KDEInitInterface::ensureKdeinitRunning()
     // If not found in system paths, search other paths
     if (srv.isEmpty()) {
         const QStringList searchPaths = QStringList()
-            << QCoreApplication::applicationDirPath() // then look where our application binary is located
+            << QString::fromUtf8("@SUBSTITUTEME@/bin") // using QStringLiteral would be more efficient, but breaks guix store reference detection.
             << QLibraryInfo::location(QLibraryInfo::BinariesPath); // look where exec path is (can be set in qt.conf)
         srv = QStandardPaths::findExecutable(QStringLiteral("kdeinit5"), searchPaths);
         if (srv.isEmpty()) {
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<tr><td><span title='2024-08-22 12:20:25 +0100'>2024-08-22</span></td><td><a href='/guix/commit/gnu/packages/gps.scm?id=2e884407c4c23fe2b19fa0ba4661680a0b59bc50'>gnu: gpsbabel: Update to 1.9.0.</a><span class='msg-avail'>...</span></td><td>Sergey Trofimov</td></tr>
<tr><td><span title='2024-07-20 12:12:16 +0200'>2024-07-20</span></td><td><a href='/guix/commit/gnu/packages/gps.scm?id=2aa3903fdbc36d694d714b79e2ade8da695e7237'>gnu: gpxsee: Update to 13.22.</a><span class='msg-avail'>...</span></td><td>Morgan Smith</td></tr>
<tr><td><span title='2024-07-18 10:45:36 +0800'>2024-07-18</span></td><td><a href='/guix/commit/gnu/packages/gps.scm?id=47be97c731afeebea459b1a58aea2bc0b56054a4'>gnu: qtlocation: Rename to qtlocation-5.</a><span class='msg-avail'>...</span></td><td>Zheng Junjie</td></tr>
<tr><td><span title='2024-04-17 17:55:53 +0100'>2024-04-17</span></td><td><a href='/guix/commit/gnu/packages/gps.scm?id=46e54988057ece26b81cad20d33f39d383287e18'>gnu: gama: Update to 2.30.</a><span class='msg-avail'>...</span></td><td>Andy Tai</td></tr>
<tr><td><span title='2024-02-26 11:50:28 +0100'>2024-02-26</span></td><td><a href='/guix/commit/gnu/packages/gps.scm?id=66321bd94c1843d531a52516df36197c29ad325c'>gnu: gama: Update to 2.29.</a><span class='msg-avail'>...</span></td><td>Andy Tai</td></tr>