Fix installer failing in macOS 14.5.

`launchctl kickstart -k` is no longer permitted for `coreaudiod`. See
<https://developer.apple.com/documentation/macos-release-notes/macos-14_4-release-notes>.
(Thanks to @gchilds.)

As explained in those release notes, `kill` still works. `postinstall`
was using `killall coreaudiod` if `launchctl kickstart -k` failed, but
that was failing as well because it had to be `sudo killall coreaudiod`.

I haven't been able to reproduce this on macOS 14.4, only 14.5. Not sure
why.

See #705.

MANUAL-INSTALL.md

@@ -38,12 +38,13 @@
   (Audio will stop working until the next step, so you might want to pause any running audio apps.)
 
   ```shell
-  sudo launchctl kickstart -kp system/com.apple.audio.coreaudiod
+  sudo killall coreaudiod
   ```
+
   or, if that fails
 
   ```shell
-  sudo killall coreaudiod
+  sudo launchctl kickstart -kp system/com.apple.audio.coreaudiod
   ```
 - Run `Background Music.app`.
 

MANUAL-UNINSTALL.md

@@ -9,12 +9,12 @@
   <sup>(Open `/Applications/Utilities/Terminal.app` and paste the following at the prompt.)</sup>
 
   ```shell
-  sudo launchctl kickstart -kp system/com.apple.audio.coreaudiod
+  sudo killall coreaudiod
   ```
   or, if that fails
 
   ```shell
-  sudo killall coreaudiod
+  sudo launchctl kickstart -kp system/com.apple.audio.coreaudiod
   ```
 - Go to the Sound section in System Settings and change your default output device at least once. (If you only have
   one device now, either use `Audio MIDI Setup.app` to create a temporary aggregate device, restart any audio apps that

pkg/postinstall

@@ -19,7 +19,7 @@
 #
 # postinstall
 #
-# Copyright © 2017-2022 Kyle Neideck
+# Copyright © 2017-2022, 2024 Kyle Neideck
 #
 
 # Make sure we use the built-in versions of programs, for consistency. Probably not necessary
@@ -53,13 +53,14 @@ bash "post_install.sh" "$xpc_helper_install_path" "BGMXPCHelper.xpc/Contents/Mac
 # some of these commands don't work with older versions of launchctl, so I figure there's no
 # harm in trying a bunch of different ways (which should all work).
 (sudo launchctl kickstart -k system/com.apple.audio.coreaudiod &>/dev/null || \
-    launchctl kill SIGTERM system/com.apple.audio.coreaudiod &>/dev/null || \
-    launchctl kill TERM system/com.apple.audio.coreaudiod &>/dev/null || \
-    launchctl kill 15 system/com.apple.audio.coreaudiod &>/dev/null || \
-    launchctl kill -15 system/com.apple.audio.coreaudiod &>/dev/null || \
-    (launchctl unload "$coreaudiod_plist" &>/dev/null && \
-        launchctl load "$coreaudiod_plist" &>/dev/null) || \
-    killall coreaudiod &>/dev/null) && \
+    sudo launchctl kill SIGTERM system/com.apple.audio.coreaudiod &>/dev/null || \
+    sudo launchctl kill TERM system/com.apple.audio.coreaudiod &>/dev/null || \
+    sudo launchctl kill 15 system/com.apple.audio.coreaudiod &>/dev/null || \
+    sudo launchctl kill -15 system/com.apple.audio.coreaudiod &>/dev/null || \
+    sudo killall coreaudiod &>/dev/null || \
+    (sudo launchctl unload "$coreaudiod_plist" &>/dev/null && \
+        sudo launchctl load "$coreaudiod_plist" &>/dev/null)
+    ) && \
     sleep 2
 
 # Wait until coreaudiod has restarted and BGMDevice is ready to use.