qt6-qtwebengine: Answer question in TODO

[Greg Troxel (via pkgsrc-wip) <commit-notify%pkgsrc.org@localhost>]

Module Name:	pkgsrc-wip
Committed By:	Greg Troxel <gdt%lexort.com@localhost>
Pushed By:	gdt
Date:		Tue Nov 4 18:32:05 2025 -0500
Changeset:	6e1dd445bc5f684e179d967bcfcbebfeb1218a69

Modified Files:
	qt6-qtwebengine/TODO

Log Message:
qt6-qtwebengine: Answer question in TODO

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diffstat:
 qt6-qtwebengine/TODO | 13 +++++++++++--
 1 file changed, 11 insertions(+), 2 deletions(-)

diffs:
diff --git a/qt6-qtwebengine/TODO b/qt6-qtwebengine/TODO
index 0e20ef2825..6b79267edf 100644
--- a/qt6-qtwebengine/TODO
+++ b/qt6-qtwebengine/TODO
@@ -1,2 +1,11 @@
-find why std::isnan required
-check other system library use
+  - find why std::isnan required
+
+    gdt: As I understand it, standards permit but do not require
+    implementations to make names defined in the std namespace
+    available globally.  It seems to be linuxy to assume they are
+    available.  The use of std::isnan is proper, and I just had a
+    s/isnan/std::isnan/ change merged to qgis today.  Really these
+    should just all be fixed upstream.
+    (Perhaps they could be SUBST.)
+
+  - check other system library use