User changes

doc/user-changes.md

@@ -6,36 +6,24 @@ stay on top of `alr` new features.
 
 ## Release `2.0-dev`
 
+### New switch `alr build --stop-after=<build stage>`
+
 ### Enable shared dependencies by default
 
-PR [#1449](https://github.com/alire-project/alire/pull/1449)
-
-Pre-2.0, Alire worked always in "sandboxed" mode; that is, all source
-dependencies were found under `<workspace>/alire/cache`. This behavior can be
-now enabled with `alr config --set dependencies.shared false`, locally or
-globally.
-
-By default, post-2.0, Alire works in "shared" mode, where sources are
-downloaded once (to `~/.cache/alire/releases`) and unique builds are created
-(under `~/.cache/alire/builds`) for unique configurations. This should minimize
-rebuilds across crate configurations and workspaces, and eliminate risks of
-inconsistencies.
-
-Disk use is decreased by unique source downloads, but might be increased by
-unique build configurations. Cache management and cleanup will be provided down
-the road. The build cache can always be deleted to retrieve disk space, at the
-cost of triggering rebuilds.
-
-Unique builds are identified by a build hash which takes into account the
-following inputs for a given release:
-
-- Build profile
-- Environment variables modified in the manifest
-- GPR external variables declared or set
-- Configuration variables declared or set
-- Compiler version
-- Vaue of `LIBRARY_TYPE` and `<CRATE>_LIBRARY_TYPE` variables.
-- Hash of dependencies
+PR [#1573](https://github.com/alire-project/alire/pull/1573)
+
+From `alr help build`:
+
+**Build stages**
+
+   Instead of always doing a full build, the process can be stopped early using `--stop-after=<stage>`, where `<stage>` is one of:
+
+   * sync: sync pristine sources to build location
+   * generation: generate configuration-dependent files
+   * post-fetch: running of post-fetch actions
+   * pre-build: running of pre-build actions
+   * build: actual building of sources
+   * post-build: running of post-build actions
 
 ### Automatic index updates