changeset 51647:56eb076a08aa

relnotes: add 6.8rc0

--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/relnotes/6.8	Mon Jun 24 12:04:14 2024 +0200
@@ -0,0 +1,72 @@
+= Mercurial 6.8rc0 =
+
+/!\ This is a tentative release, any and all notes below are subject to change or removal.
+
+As usual, a *lot* of patches don't make it to this list.
+
+== New Features or performance improvements ==
+
+ * Phases have been reworked to improve their general performance
+    * revset: stop serializing node when using "%ln"
+    * phases: convert remote phase root to node while reading them
+    * phases: use revision number in new_heads
+    * phases: use revision number in analyze_remote_phases
+    * phases: stop using `repo.set` in `remotephasessummary`
+    * phases: move RemotePhasesSummary to revision number
+    * phases: use revision number in `_pushdiscoveryphase`
+    * phases: introduce a performant efficient way to access revision in a set
+    * phases: rework the logic of _pushdiscoveryphase to bound complexity
+ * The Rust working copy code is being used by more places now:
+     * matchers: support patternmatcher in rust
+     * dirstate: remove the python-side whitelist of allowed matchers
+ * stream-clone: disable gc for `_entries_walk` duration
+ * stream-clone: disable gc for the initial section for the v3 format
+ * postincoming: avoid computing branchhead if no report will be posted
+ * stream-clone: disable gc for the entry listing section for the v2 format
+ * perf: allow profiling of more than one run
+ * perf: run the gc before each run
+ * perf: start recording total time after warming
+ * perf: clear vfs audit_cache before each run
+ * outgoing: rework the handling of the `missingroots` case to be faster
+ * outgoing: add a simple fastpath when there is no common
+ * tags-cache: skip the filternode step if we are not going to use it
+ * tags-cache: directly operate on rev-num warming hgtagsfnodescache
+ * tags-cache: directly perform a monimal walk for hgtagsfnodescache warming
+ * exchange: improve computation of relevant markers for large repos
+
+
+== New Experimental Features ==
+
+ * Introduce a new experimental branch cache "v3":
+    * branchcache: add more test for the logic around obsolescence and branch heads
+    * branchcache: skip entries that are topological heads in the on disk file
+    * branchcache: add a "pure topological head" fast path
+    * branchcache: allow to detect "pure topological case" for branchmap
+
+
+== Bug Fixes ==
+
+ * perf-stream-locked-section: actually use v1 generation when requested
+ * perf-stream-locked-section: fix the call to the v3 generator
+ * perf-stream-locked-section: advertise the right version key in the help
+ * stream: in v3, skip the "size" fast path if the entries have some unknown size
+ * stream-clone: stop getting the file size of all file in v3
+ * streamclone: stop listing files for entries that have no volatile files
+ * perf-stream-consume: use the source repository config when applying
+ * bundle: do no check the changegroup version if no changegroup is included
+ * perf: create the temporary target next to the source in stream-consume
+ * bundlespec: fix the "streamv2" and "streamv3-exp" variant
+ * push: rework the computation of fallbackheads to be correct
+ * profiler: flush after writing the profiler output
+ * base-revsets: use an author that actually exercises a lot of changesets
+ * hgrc: search XDG_CONFIG_HOME on mac
+ * clonebundles: add missing newline to legacy response
+ * narrow: add a test for linkrev computation done during widen
+
+== Backwards Compatibility Changes ==
+
+== Internal API Changes ==
+
+== Miscellaneous ==
+
+ * obsolete: quote the feature name
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