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| -rw-r--r-- | doc/manual/src/release-notes/rl-2.4.md | 33 |
1 files changed, 30 insertions, 3 deletions
diff --git a/doc/manual/src/release-notes/rl-2.4.md b/doc/manual/src/release-notes/rl-2.4.md index def4a7b66..3c94e6740 100644 --- a/doc/manual/src/release-notes/rl-2.4.md +++ b/doc/manual/src/release-notes/rl-2.4.md @@ -1,4 +1,4 @@ -# Release 2.4 (2021-10-XX) +# Release 2.4 (2021-11-01) This is the first release in more than two years and is the result of more than 2800 commits from 195 contributors since release 2.3. @@ -286,8 +286,35 @@ more than 2800 commits from 195 contributors since release 2.3. to your `nix.conf` if you want to use it, or pass `--extra-experimental-features nix-command` on the command line. -* The old `nix run` has been renamed to `nix shell` (and there is a - new `nix run` that does something else, as described above). +* The `nix` command no longer has a syntax for referring to packages + in a channel. This means that the following no longer works: + + > nix build nixpkgs.hello # Nix 2.3 + + Instead, you can either use the `#` syntax to select a package from + a flake, e.g. + + > nix build nixpkgs#hello + + Or, if you want to use the `nixpkgs` channel in the `NIX_PATH` + environment variable: + + > nix build -f '<nixpkgs>' hello + +* The old `nix run` has been renamed to `nix shell`, while there is a + new `nix run` that runs a default command. So instead of + + > nix run nixpkgs.hello -c hello # Nix 2.3 + + you should use + + > nix shell nixpkgs#hello -c hello + + or just + + > nix run nixpkgs#hello + + if the command you want to run has the same name as the package. * It is now an error to modify the `plugin-files` setting via a command-line flag that appears after the first non-flag argument to |