x11/plasma5-plasma-workspace: Fix XDG_CONFIG_DIRS for Wayland

Since Plasma 5.22, setupPlasmaEnvironment adds to XDG_CONFIG_DIRS, with
a fallback for the XDG-mandated /etc/xdg default. When using X11, this
is ok, as runStartupConfig gets called before setupPlasmaEnvironment,
and so the latter uses our modified value. However, when using Wayland,
they are called in the opposite order, and so runStartupConfig sees the
variable is already set and doesn't inject our modified default. Fix
this by changing setupPlasmaEnvironment's default value instead so it's
only set in one place. This approach also matches how other ports get
patched for our non-conforming environment.

Without this, the splash screen shows but plasmashell is never started
(nor any other autostart programs), eventually timing out and fading to
a black screen.

PR:		265505
Obtained from:	CheriBSD
Approved by:	maintainer timeout (3 months)

x11/plasma5-plasma-workspace/Makefile

@@ -1,6 +1,6 @@
 PORTNAME=	plasma-workspace
 DISTVERSION=	${KDE_PLASMA_VERSION}
-PORTREVISION=	1
+PORTREVISION=	2
 CATEGORIES=	x11 kde kde-plasma
 
 MAINTAINER=	kde@FreeBSD.org
@@ -60,6 +60,10 @@ CMAKE_OFF=	BUILD_TESTING
 # In 5.15 a file was moved from x11/plasma5-plasma-desktop to x11/plasma5-plasma-workspace:
 CONFLICTS_INSTALL=	plasma5-plasma-desktop-5.14.*
 
+post-patch:
+	@${REINPLACE_CMD} -e 's|%%LOCALBASE%%|${LOCALBASE}|g' \
+		${PATCH_WRKSRC}/startkde/startplasma.cpp
+
 post-stage:
 	${INSTALL_SCRIPT} ${FILESDIR}/startplasma-wayland.sh ${STAGEDIR}/${LOCALBASE}/bin/
 

x11/plasma5-plasma-workspace/files/patch-setup_xdg_environment

@@ -1,23 +1,11 @@
 --- startkde/startplasma.cpp.orig	2019-10-19 18:43:24.172713000 +0200
 +++ startkde/startplasma.cpp	2019-10-19 18:45:50.953945000 +0200
-@@ -192,6 +192,10 @@
-     if (!qEnvironmentVariableIsSet("XDG_DATA_DIRS")) {
-         qputenv("XDG_DATA_DIRS", KDE_INSTALL_FULL_DATAROOTDIR ":/usr/share:/usr/local/share");
+@@ -362,6 +362,6 @@
+     // Add kdedefaults dir to allow config defaults overriding from a writable location
+     QByteArray currentConfigDirs = qgetenv("XDG_CONFIG_DIRS");
+     if (currentConfigDirs.isEmpty()) {
+-        currentConfigDirs = "/etc/xdg";
++        currentConfigDirs = "%%LOCALBASE%%/etc/xdg:/etc/xdg";
      }
-+   // Additionally also set default value for XDG_CONFIG_DIRS which is not set by default on FreeBSD.
-+   if (!qEnvironmentVariableIsSet("XDG_CONFIG_DIRS")) {
-+        qputenv("XDG_CONFIG_DIRS", KDE_INSTALL_FULL_CONFDIR ":/etc/xdg:/usr/local/etc/xdg");
-+   }
- }
-
-
---- startkde/config-startplasma.h.cmake.orig	2019-10-19 18:56:51.844465000 +0200
-+++ startkde/config-startplasma.h.cmake	2019-10-19 18:57:22.843807000 +0200
-@@ -3,6 +3,7 @@
-
- #define CMAKE_INSTALL_FULL_BINDIR "@CMAKE_INSTALL_FULL_BINDIR@"
- #define KDE_INSTALL_FULL_DATAROOTDIR "@KDE_INSTALL_FULL_DATAROOTDIR@"
-+#define KDE_INSTALL_FULL_CONFDIR "@KDE_INSTALL_FULL_CONFDIR@"
- #define CMAKE_INSTALL_FULL_LIBEXECDIR "@CMAKE_INSTALL_FULL_LIBEXECDIR@"
- #define CMAKE_INSTALL_FULL_LIBEXECDIR_KF5 "@CMAKE_INSTALL_FULL_LIBEXECDIR_KF5@"
- #define KWIN_WAYLAND_BIN_PATH "@KWIN_WAYLAND_BIN_PATH@"
+     const auto extraConfigDir = QStandardPaths::writableLocation(QStandardPaths::GenericConfigLocation).toUtf8() + "/kdedefaults";
+     QDir().mkpath(QString::fromUtf8(extraConfigDir));