kdeFrameworks: fixup inputs and outputs

- Reduce environment pollution with a separate $bin output containing programs,
  plugins, and shared data. Libraries remain in $out and are not installed into
  the environment.
- Only propagate build inputs as required.

pkgs/development/libraries/kde-frameworks/kinit/default.nix

@@ -1,5 +1,5 @@
 {
-  mkDerivation, lib, copyPathsToStore,
+  mkDerivation, lib, copyPathsToStore, writeScript,
   extra-cmake-modules, kdoctools,
   kconfig, kcrash, ki18n, kio, kparts, kservice, kwindowsystem, plasma-framework
 }:
@@ -10,7 +10,7 @@ mkDerivation {
   name = "kinit";
   meta = { maintainers = [ lib.maintainers.ttuegel ]; };
   nativeBuildInputs = [ extra-cmake-modules kdoctools ];
-  propagatedBuildInputs = [
+  buildInputs = [
     kconfig kcrash ki18n kio kservice kwindowsystem
   ];
   patches = copyPathsToStore (lib.readPathsFromFile ./. ./series);
@@ -19,4 +19,18 @@ mkDerivation {
     ''-DNIXPKGS_KF5_PARTS="${getLib kparts}/lib/libKF5Parts.so.5"''
     ''-DNIXPKGS_KF5_PLASMA="${getLib plasma-framework}/lib/libKF5Plasma.so.5"''
   ];
+  postFixup = ''
+    moveToOutput "lib/libexec/kf5/start_kdeinit" "$bin"
+  '';
+  setupHook = writeScript "setup-hook.sh" ''
+    kinitFixupOutputHook() {
+        if [ $prefix != ''${!outputBin} ] && [ -d $prefix/lib ]; then
+            mkdir -p ''${!outputBin}/lib
+            find $prefix/lib -maxdepth 1 -name 'libkdeinit5_*.so' -exec ln -s \{\} ''${!outputBin}/lib \;
+            rmdir --ignore-fail-on-non-empty ''${!outputBin}/lib
+        fi
+    }
+
+    fixupOutputHooks+=(kinitFixupOutputHook)
+  '';
 }