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
@@ -1533,20 +1531,6 @@ static int initXconnection()
 }
 #endif
 
-#ifndef Q_OS_OSX
-// Find a shared lib in the lib dir, e.g. libkio.so.
-// Completely unrelated to plugins.
-static QString findSharedLib(const QString &lib)
-{
-    QString path = QFile::decodeName(CMAKE_INSTALL_PREFIX "/" LIB_INSTALL_DIR "/") + lib;
-    if (QFile::exists(path)) {
-        return path;
-    }
-    // We could also look in LD_LIBRARY_PATH, but really, who installs the main libs in different prefixes?
-    return QString();
-}
-#endif
-
 extern "C" {
 
     static void secondary_child_handler(int)
@@ -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);
'range'>range</option>
</select>
<input class='txt' type='search' size='10' name='q' value=''/>
<input type='submit' value='search'/>
</form>
</td></tr></table>
<div class='path'>path: <a href='/guix/log/?id=3f62ddc0d5eebbff32bd05ba42148fdc3a6b02e3'>root</a>/<a href='/guix/log/gnu?id=3f62ddc0d5eebbff32bd05ba42148fdc3a6b02e3'>gnu</a>/<a href='/guix/log/gnu/packages?id=3f62ddc0d5eebbff32bd05ba42148fdc3a6b02e3'>packages</a>/<a href='/guix/log/gnu/packages/bdw-gc.scm?id=3f62ddc0d5eebbff32bd05ba42148fdc3a6b02e3'>bdw-gc.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/bdw-gc.scm?id=3f62ddc0d5eebbff32bd05ba42148fdc3a6b02e3&amp;showmsg=1'>Expand</a>)</th><th class='left'>Author</th></tr>
<tr><td><span title='2021-12-13 17:48:25 +0100'>2021-12-13</span></td><td><a href='/guix/commit/gnu/packages/bdw-gc.scm?id=8394619baceb118df92e355377fd543bb1aa501a'>gnu: Simplify package inputs.</a><span class='msg-avail'>...<span class='msg-tooltip'>This commit was obtained by running:

  ./pre-inst-env guix style

without any additional argument.
</span></span></td><td>Ludovic Courtès</td></tr>
<tr><td><span title='2021-07-14 15:38:03 +0200'>2021-07-14</span></td><td><a href='/guix/commit/gnu/packages/bdw-gc.scm?id=637a1e7dcce4d1a2c4f2f9c478df4a640ae1f230'>utils: Define 'target-hurd?' predicate.</a><span class='msg-avail'>...<span class='msg-tooltip'>It behaves similarily to the other target-...? procedures.
The usage of hurd-triplet? / target-hurd? in libgc appears
incorrect to me, as (%current-system) is normally never false.

* gnu/packages/hurd.scm (hurd-triplet?): Move to ...
* guix/util.scm (target-hurd?): ... here, let its argument
  default to (%current-target-system) or (%current-system),
  and write a docstring.
* gnu/packages/hurd.scm
  (hurd-target?, hurd-system?): Use target-hurd? instead of
  hurd-triplet?.
* gnu/packages/bdw-gc.scm (libgc): Likewise.
* gnu/packages/cross-base.scm
  (cross-libc)[arguments]&lt;#:configure-flags&gt;: Likewise.
  (cross-libc)[arguments]&lt;#:phases&gt;: Likewise.
  (cross-libc)[arguments]&lt;#:native-inputs&gt;: Likewise.
* gnu/packages/make-boostrap.scm
  (%glibc-stripped)[inputs]: Likewise.

Signed-off-by: Mathieu Othacehe &lt;othacehe@gnu.org&gt;
</span></span></td><td>Maxime Devos</td></tr>
<tr><td><span title='2021-05-16 00:23:20 +0200'>2021-05-16</span></td><td><a href='/guix/commit/gnu/packages/bdw-gc.scm?id=20c122a4b0798a87c44edbc37229f9c38e44386c'>gnu: libgc: Remove 'libgc/disable-munmap'.</a><span class='msg-avail'>...<span class='msg-tooltip'>This variant is already the default on this branch.

* gnu/packages/bdw-gc.scm (libgc/disable-munmap): Remove.
</span></span></td><td>Ludovic Courtès</td></tr>
<tr><td><span title='2021-05-15 22:55:24 +0200'>2021-05-15</span></td><td><a href='/guix/commit/gnu/packages/bdw-gc.scm?id=25487c3fe6a41dd62f6e53f256392224a3be2a08'>Merge branch 'master' into core-updates</a></td><td>Ludovic Courtès</td></tr>
<tr><td><span title='2021-05-13 00:19:58 +0200'>2021-05-13</span></td><td><a href='/guix/commit/gnu/packages/bdw-gc.scm?id=3320b70f4dbb9bd8d4f782975111f32d0d045edb'>gnu: libgc: Add variant with '--disable-munmap'.</a><span class='msg-avail'>...<span class='msg-tooltip'>* gnu/packages/bdw-gc.scm (libgc/disable-munmap): New variable.
</span></span></td><td>Ludovic Courtès</td></tr>
<tr><td><span title='2021-05-08 11:48:01 +0200'>2021-05-08</span></td><td><a href='/guix/commit/gnu/packages/bdw-gc.scm?id=a605ef3ce9dbd6b79dd9322f89d9facaf875b487'>gnu: libgc@8: Build with '--disable-munmap'.</a><span class='msg-avail'>...<span class='msg-tooltip'>Partially fixes &lt;https://bugs.gnu.org/40525&gt;.

* gnu/packages/bdw-gc.scm (libgc)[arguments]: Configure with
'--disable-munmap'.
* gnu/packages/guile.scm (guile-3.0/libgc-7): Remove.
* gnu/packages/ci.scm (cuirass)[inputs]: Refer to GUILE-3.0-LATEST
instead of GUILE-3.0/LIBGC-7.
* guix/self.scm (specification-&gt;package): Likewise.
</span></span></td><td>Ludovic Courtès</td></tr>