isolate environments for pipewire launcher

media/video/pipewire/pipewire-launcher.sh

@@ -1,7 +1,22 @@
 #!/bin/sh
 
+# backup envs
+p=$PATH
+h=$HOME
+u=$USER
+d=$(dbus-launch)
+# erase envs
+unset $(env | while read line ; do
+    echo "${line/=*/}"
+done)
+# restore envs
+export PATH="$p"
+export HOME="$h"
+export USER="$u"
+
 export PIPEWIRE_RUNTIME_DIR=$HOME/.config/pipewire
 export XDG_RUNTIME_DIR=$HOME/.config
+export $d
 
 # We need to kill any existing pipewire instance to restore sound
 pkill -u "${USER}" -fx /usr/bin/pipewire-pulse 1>/dev/null 2>&1