Search the "extra libs" in GUIX_KF5INIT_LIB_PATH (which basically is a
collection of all /lib directories). We can not hard-code the full path to the
libsKF5Plasam, since adding palse-workspace

Adopted from NixOS
pkgs/development/libraries/kde-frameworks/kinit/kdeinit-extra_libs.patch

===================================================================
--- kinit-5.32.0/src/kdeinit/kinit-5.32.0/src/kdeinit/.orig
+++ kinit-5.32.0/src/kdeinit/kinit.cpp
@@ -96,9 +96,9 @@
     "libKF5Parts.5.dylib",
     "libKF5Plasma.5.dylib"
 #else
-    "libKF5KIOCore.so.5",
-    "libKF5Parts.so.5",
-    "libKF5Plasma.so.5"
+    "GUIX_PKGS_KF5_KIO/lib/libKF5KIOCore.so.5",
+    "GUIX_PKGS_KF5_PARTS/lib/libKF5Parts.so.5",
+    "GUIX_PKGS_KF5_PLASMA/lib/libKF5Plasma.so.5"
 #endif
 };
 #endif
@@ -1673,7 +1673,7 @@
 #if defined(Q_OS_UNIX) && !defined(Q_OS_OSX)
     if (!d.suicide && qEnvironmentVariableIsEmpty("KDE_IS_PRELINKED")) {
         for (const char *extra_lib : extra_libs) {
-            const QString extra = findSharedLib(QString::fromLatin1(extra_lib));
+            const QString extra = QString::fromLatin1(extra_lib);
             if (!extra.isEmpty()) {
                 QLibrary l(extra);
                 l.setLoadHints(QLibrary::ExportExternalSymbolsHint);
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<div class='path'>path: <a href='/guix/log/?id=dd970122ddf3679482f658f73dd68307496c6215'>root</a>/<a href='/guix/log/gnu?id=dd970122ddf3679482f658f73dd68307496c6215'>gnu</a>/<a href='/guix/log/gnu/packages?id=dd970122ddf3679482f658f73dd68307496c6215'>packages</a>/<a href='/guix/log/gnu/packages/electronics.scm?id=dd970122ddf3679482f658f73dd68307496c6215'>electronics.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/electronics.scm?id=dd970122ddf3679482f658f73dd68307496c6215&amp;showmsg=1'>Expand</a>)</th><th class='left'>Author</th></tr>
<tr><td><span title='2022-03-28 13:52:45 -0400'>2022-03-28</span></td><td><a href='/guix/commit/gnu/packages/electronics.scm?id=7d136be00f5db191bf8450e977bb6fcb386e5dd8'>gnu: openboardview: Do not recursively clone source.</a><span class='msg-avail'>...</span></td><td>Maxim Cournoyer</td></tr>
<tr><td><span title='2022-03-21 15:30:55 -0400'>2022-03-21</span></td><td><a href='/guix/commit/gnu/packages/electronics.scm?id=ad85ca09777052426e801788032beb7592f0f21a'>gnu: openboardview: Unbundle imgui.</a><span class='msg-avail'>...</span></td><td>Maxim Cournoyer</td></tr>
<tr><td><span title='2022-03-21 15:30:54 -0400'>2022-03-21</span></td><td><a href='/guix/commit/gnu/packages/electronics.scm?id=249e84943e628458d2c59c79a19cb9fb3acb068f'>gnu: openboardview: Update to 8.95.2.</a><span class='msg-avail'>...</span></td><td>Maxim Cournoyer</td></tr>
<tr><td><span title='2022-02-09 14:37:42 -0500'>2022-02-09</span></td><td><a href='/guix/commit/gnu/packages/electronics.scm?id=32ccbc3a1ebf62d90f618ababb206df57f7e767b'>gnu: Add openboardview.</a><span class='msg-avail'>...</span></td><td>Maxim Cournoyer</td></tr>
<tr><td><span title='2022-01-21 10:28:41 +0100'>2022-01-21</span></td><td><a href='/guix/commit/gnu/packages/electronics.scm?id=f5ccf99fe5858dd6da3b541a42a954b715d4ffbd'>gnu: libsigrok: Update to 0.5.2-1.a7e919a.</a><span class='msg-avail'>...</span></td><td>Mathieu Othacehe</td></tr>
<tr><td><span title='2022-01-20 14:20:13 +0100'>2022-01-20</span></td><td><a href='/guix/commit/gnu/packages/electronics.scm?id=12aeeea4c4d51a9ffe699cc8205d0f4213b484c1'>gnu: pulseview: Fix build</a><span class='msg-avail'>...</span></td><td>Mathieu Othacehe</td></tr>
<tr><td><span title='2022-01-20 14:18:53 +0100'>2022-01-20</span></td><td><a href='/guix/commit/gnu/packages/electronics.scm?id=5e2804b0238cdb9ec98638e00101018c52725e82'>gnu: libsigrok: Fix build.</a><span class='msg-avail'>...</span></td><td>Mathieu Othacehe</td></tr>
<tr><td><span title='2022-01-15 23:03:31 +0100'>2022-01-15</span></td><td><a href='/guix/commit/gnu/packages/electronics.scm?id=40d5931a6081e1ec534d7c7cf7024d8432e4477a'>gnu: libsigrokdecode: Fix build with python 3.9.</a><span class='msg-avail'>...</span></td><td>Danny Milosavljevic</td></tr>
<tr><td><span title='2021-12-13 17:48:25 +0100'>2021-12-13</span></td><td><a href='/guix/commit/gnu/packages/electronics.scm?id=8394619baceb118df92e355377fd543bb1aa501a'>gnu: Simplify package inputs.</a><span class='msg-avail'>...</span></td><td>Ludovic Courtès</td></tr>
<tr><td><span title='2021-06-14 00:24:42 -0400'>2021-06-14</span></td><td><a href='/guix/commit/gnu/packages/electronics.scm?id=ea0a51071e68c37a4c9c25421cf03bc2f442c67b'>gnu: Rename qtbase to qtbase-5.</a><span class='msg-avail'>...</span></td><td>Maxim Cournoyer</td></tr>
<tr><td><span title='2021-04-20 11:13:07 +0200'>2021-04-20</span></td><td><a href='/guix/commit/gnu/packages/electronics.scm?id=a10177737136b9416949cdbf1cf76566eb3bd86b'>gnu: xoscope: Update to 2.3.</a><span class='msg-avail'>...</span></td><td>Tobias Geerinckx-Rice</td></tr>