relnote: document the use of persistent-nodemap by default for Rust build
Differential Revision: https://phab.mercurial-scm.org/D10498
--- a/relnotes/next Tue Apr 20 16:18:43 2021 +0200
+++ b/relnotes/next Tue Apr 20 16:29:05 2021 +0200
@@ -21,6 +21,14 @@
released in May 2019. See `hg help config.format.revlog-compression` for
details.
+ * Mercurial installation built with the Rust parts will now use the
+ "persistent nodemap" feature by default. This feature was introduced in
+ Mercurial 5.4 (May 2020). However Mercurial instalation built without the
+ fast Rust implementation will refuse to interract with them by default.
+ This restriction can be lifted through configuration.
+
+ See `hg help config.format.use-persistent-nodemap` for details
+
== New Experimental Features ==
* There's a new `diff.merge` config option to show the changes