[bug#33820] [PATCH 2/9] gnu: kcmutils: Print plugin name when loading fails.

[Hartmut Goebel]

Transfer the NixOS patch "kcmutils-debug-module-loader" for kcmutils as of
2018-02-17.

* gnu/packages/kde-frameworks.scm(kcmutils)<patch>: Add substitute for
  src/kcmoduleloader.cpp.
---
 gnu/packages/kde-frameworks.scm | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/gnu/packages/kde-frameworks.scm b/gnu/packages/kde-frameworks.scm
index d508624e7..3f0eff292 100644
--- a/gnu/packages/kde-frameworks.scm
+++ b/gnu/packages/kde-frameworks.scm
@@ -2119,6 +2119,10 @@ using the XBEL format.")
                ;; make QDirIterator follow symlinks
                (("^\\s*(QDirIterator it\\(.*, 
QDirIterator::Subdirectories)(\\);)" _ a b)
                 (string-append a " | QDirIterator::FollowSymlinks" b)))
+             (substitute* "src/kcmoduleloader.cpp"
+               ;; print plugin name when loading fails
+               (("^\\s*(qWarning\\(\\) << \"Error loading) (plugin:\")( << 
loader\\.errorString\\(\\);)" _ a b c)
+                (string-append a " KCM plugin\" << mod.service()->library() << 
\":\"" c)))
              #t)))))
     (inputs
      `(("kauth" ,kauth)
-- 
2.13.7