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='2022-08-03 17:43:28 +0200'>2022-08-03</span></td><td><a href='/guix/commit/gnu/packages/mingw.scm?id=5c585a7ff19f172595f09da9354e4fc540352855'>gnu: mingw-w64-tools: Update to 10.0.0.</a><span class='msg-avail'>...<span class='msg-tooltip'>* gnu/packages/mingw.scm (mingw-w64-tools): Update to 10.0.0.

Signed-off-by: Ludovic Courtès &lt;ludo@gnu.org&gt;
</span></span></td><td>Kaelyn Takata</td></tr>
<tr><td><span title='2022-08-03 17:43:28 +0200'>2022-08-03</span></td><td><a href='/guix/commit/gnu/packages/mingw.scm?id=5791736e5ee194deb9d241cb47feb1cef80da525'>gnu: mingw: Update to 10.0.0.</a><span class='msg-avail'>...<span class='msg-tooltip'>* gnu/packages/mingw.scm (mingw): Update to 10.0.0.
[arguments] Disable parallel building to avoid failures trying to access empty
.a files.

Signed-off-by: Ludovic Courtès &lt;ludo@gnu.org&gt;
</span></span></td><td>Kaelyn Takata</td></tr>