pythongh-92603: add upstream fix to macOS installer

Mac/BuildScript/backport_gh92603_fix.patch

@@ -0,0 +1,82 @@
+Accepted upstream for release in Tk 8.6.14:
+https://core.tcl-lang.org/tk/info/cf3830280b
+
+--- tk8.6.13/macosx/tkMacOSXWindowEvent.c.orig
++++ tk8.6.13-patched/macosx/tkMacOSXWindowEvent.c
+@@ -239,8 +239,8 @@ extern NSString *NSWindowDidOrderOffScreenNotification;
+     if (winPtr) {
+ 	TKContentView *view = [window contentView];
+
+-#if MAC_OS_X_VERSION_MAX_ALLOWED >= 101500
+-	if (@available(macOS 10.15, *)) {
++#if MAC_OS_X_VERSION_MAX_ALLOWED >= 101400
++	if (@available(macOS 10.14, *)) {
+ 	    [view viewDidChangeEffectiveAppearance];
+ 	}
+ #endif
+@@ -1237,29 +1237,8 @@ static const char *const accentNames[] = {
+     } else if (effectiveAppearanceName == NSAppearanceNameDarkAqua) {
+ 	Tk_SendVirtualEvent(tkwin, "DarkAqua", NULL);
+     }
+-    if ([NSApp macOSVersion] < 101500) {
+-
+-	/*
+-	 * Mojave cannot handle the KVO shenanigans that we need for the
+-	 * highlight and accent color notifications.
+-	 */
+-
+-	return;
+-    }
+     if (!defaultColor) {
+ 	defaultColor = [NSApp macOSVersion] < 110000 ? "Blue" : "Multicolor";
+-	preferences = [[NSUserDefaults standardUserDefaults] retain];
+-
+-	/*
+-	 * AppKit calls this method when the user changes the Accent Color
+-	 * but not when the user changes the Highlight Color.  So we register
+-	 * to receive KVO notifications for Highlight Color as well.
+-	 */
+-
+-	[preferences addObserver:self
+-		      forKeyPath:@"AppleHighlightColor"
+-			 options:NSKeyValueObservingOptionNew
+-			 context:NULL];
+     }
+     NSString *accent = [preferences stringForKey:@"AppleAccentColor"];
+     NSArray *words = [[preferences stringForKey:@"AppleHighlightColor"]
+--- tk8.6.13/macosx/tkMacOSXWm.c.orig
++++ tk8.6.13-patched/macosx/tkMacOSXWm.c
+@@ -1289,6 +1289,11 @@ TkWmDeadWindow(
+ 	    [NSApp _setMainWindow:nil];
+ 	}
+ 	[deadNSWindow close];
++#if MAC_OS_X_VERSION_MAX_ALLOWED >= 101400
++	NSUserDefaults *preferences = [NSUserDefaults standardUserDefaults];
++	[preferences removeObserver:deadNSWindow.contentView
++		      forKeyPath:@"AppleHighlightColor"];
++#endif
+ 	[deadNSWindow release];
+
+ #if DEBUG_ZOMBIES > 1
+@@ -6763,6 +6768,21 @@ TkMacOSXMakeRealWindowExist(
+     }
+     TKContentView *contentView = [[TKContentView alloc]
+ 				     initWithFrame:NSZeroRect];
++#if MAC_OS_X_VERSION_MAX_ALLOWED >= 101400
++    NSUserDefaults *preferences = [NSUserDefaults standardUserDefaults];
++
++    /*
++     * AppKit calls the viewDidChangeEffectiveAppearance method when the
++     * user changes the Accent Color but not when the user changes the
++     * Highlight Color.  So we register to receive KVO notifications for
++     * Highlight Color as well.
++     */
++
++    [preferences addObserver:contentView
++		  forKeyPath:@"AppleHighlightColor"
++		     options:NSKeyValueObservingOptionNew
++		     context:NULL];
++#endif
+     [window setContentView:contentView];
+     [contentView release];
+     [window setDelegate:NSApp];

Mac/BuildScript/build-installer.py

@@ -268,7 +268,7 @@ def library_recipes():
             tcl_checksum='43a1fae7412f61ff11de2cfd05d28cfc3a73762f354a417c62370a54e2caf066'
 
             tk_checksum='2e65fa069a23365440a3c56c556b8673b5e32a283800d8d9b257e3f584ce0675'
-            tk_patches = [ ]
+            tk_patches = ['backport_gh92603_fix.patch']
 
 
         base_url = "https://prdownloads.sourceforge.net/tcl/{what}{version}-src.tar.gz"

Misc/NEWS.d/next/macOS/2023-08-30-16-33-57.gh-issue-92603.ATkKVO.rst

@@ -0,0 +1,3 @@
+Update macOS installer to include a fix accepted by upstream Tcl/Tk
+for a crash encountered after the first :meth:`tkinter.Tk` instance
+is destroyed.