Branch 2.9 release notes

doc/manual/src/release-notes/rl-next.md

@@ -1,39 +1 @@
 # Release X.Y (202?-??-??)
-
-* Nix now provides better integration with zsh's run-help feature. It is now
-  included in the Nix installation in the form of an autoloadable shell
-  function, run-help-nix. It picks up Nix subcommands from the currently typed
-  in command and directs the user to the associated man pages.
-
-* `nix repl` has a new build-'n-link (`:bl`) command that builds a derivation
-  while creating GC root symlinks.
-
-* The path produced by `builtins.toFile` is now allowed to be imported or read
-  even with restricted evaluation. Note that this will not work with a
-  read-only store.
-
-* `nix build` has a new `--print-out-paths` flag to print the resulting output paths.
-  This matches the default behaviour of `nix-build`.
-
-* You can now specify which outputs of a derivation `nix` should
-  operate on using the syntax `installable^outputs`,
-  e.g. `nixpkgs#glibc^dev,static` or `nixpkgs#glibc^*`. By default,
-  `nix` will use the outputs specified by the derivation's
-  `meta.outputsToInstall` attribute if it exists, or all outputs
-  otherwise.
-
-* Running nix with the new `--debugger` flag will cause it to start a repl session if
-  there is an exception thrown during eval, or if `builtins.break` is called.  From
-  there one can inspect symbol values and evaluate nix expressions.  In debug mode
-  the following new repl commands are available:
-  ```
-  :env          Show env stack
-  :bt           Show trace stack
-  :st           Show current trace
-  :st <idx>     Change to another trace in the stack
-  :c            Go until end of program, exception, or builtins.break().
-  :s            Go one step
-  ```
-
-* `builtins.fetchTree` (and flake inputs) can now be used to fetch plain files
-  over the `http(s)` and `file` protocols in addition to directory tarballs.