forked from lix-project/lix
Release notes
This commit is contained in:
Eelco Dolstra
parent
6a8d6246f6
commit
5e222ac18b
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@ -1,8 +1,492 @@
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# Release 2.4 (202X-XX-XX)
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# Release 2.4 (2021-10-XX)
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- It is now an error to modify the `plugin-files` setting via a
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command-line flag that appears after the first non-flag argument
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to any command, including a subcommand to `nix`. For example,
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`nix-instantiate default.nix --plugin-files ""` must now become
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`nix-instantiate --plugin-files "" default.nix`.
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- Plugins that add new `nix` subcommands are now actually respected.
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This is the first release in more than two years and is the result of
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more than 2800 commits from 195 contributors since release 2.3.
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## Highlights
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* Nix's **error messages** have been improved a lot. For instance,
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evaluation errors now point out the location of the error:
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```
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$ nix build
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error: undefined variable 'bzip3'
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at /nix/store/449lv242z0zsgwv95a8124xi11sp419f-source/flake.nix:88:13:
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87| [ curl
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88| bzip3 xz brotli editline
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| ^
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89| openssl sqlite
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```
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* The **`nix` command** has seen a lot of work and is now almost at
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feature parity with the old command-line interface (the `nix-*`
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commands). It aims to be [more modern, consistent and pleasant to
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use](../contributing/cli-guideline.md) than the old CLI.
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* **Flakes** are a new format to package Nix-based projects in a more
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discoverable, composable, consistent and reproducible way. A flake
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is just a repository or tarball containing a file named `flake.nix`
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that specifies dependencies on other flakes and returns any Nix
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assets such as packages, Nixpkgs overlays, NixOS modules or CI
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tests. The new `nix` CLI is primarily based around flakes; for
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example, a command like `nix run nixpkgs#hello` runs the `hello`
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application from the `nixpkgs` flake.
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Flakes are currently marked as experimental. For an introduction,
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see [this blog
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post](https://www.tweag.io/blog/2020-05-25-flakes/). For detailed
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information about flake syntax and semantics, see the [`nix flake`
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manual page](../command-ref/new-cli/nix3-flake.md).
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* Nix's store can now be **content-addressed**, meaning that the hash
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component of a store path is the hash of the path's
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contents. Previously Nix could only build **input-addressed** store
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paths, where the hash is computed from the derivation dependency
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graph. Content-addressing allows deduplication, early cutoff in
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build systems, and unpriviliged closure copying. This is still [an
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experimental
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feature](https://discourse.nixos.org/t/content-addressed-nix-call-for-testers/12881).
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* The Nix manual has been converted into Markdown, making it easier to
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contribute. In addition, every `nix` subcommand now has a manual
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page, documenting every option.
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* A new setting that allows **experimental features** to be enabled
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selectively. This allows us to merge unstable features into Nix more
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quickly and do more frequent releases.
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## Other features
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* There are many new `nix` subcommands:
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- `nix develop` is intended to replace `nix-shell`. It has a number
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of new features:
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* It automatically sets the output environment variables (such as
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`$out`) to writable locations (such as `./outputs/out`).
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* It can store the environment in a profile. This is useful for
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offline work.
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* It can run specific phases directly. For instance, `nix develop
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--build` runs `buildPhase`.
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- It allows dependencies in the Nix store to be "redirected" to
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arbitrary directories using the `--redirect` flag. This is
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useful if you want to hack on a package *and* some of its
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dependencies at the same time.
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- `nix print-dev-env` prints the environment variables and bash
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functions defined by a derivation. This is useful for users of
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other shells than bash (especially with `--json`).
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- `nix shell` was previously named `nix run` and is intended to
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replace `nix-shell -p`, but without the `stdenv` overhead. It
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simply starts a shell where some packages have been added to
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`$PATH`.
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- `nix run` (not to be confused with the old subcommand that has
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been renamed to `nix shell`) runs an "app", a flake output that
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specifies a command to run, or an eponymous program from a
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package. For example, `nix run nixpkgs#hello` runs the `hello`
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program from the `hello` package in `nixpkgs`.
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- `nix flake` is the container for flake-related operations, such as
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creating a new flake, quering the contents of a flake or updating
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flake lock files.
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- `nix registry` allows you to query and update the flake registry,
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which maps identifiers such as `nixpkgs` to concrete flake URLs.
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- `nix profile` is intended to replace `nix-env`. Its main advantage
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is that it keeps track of the provenance of installed packages
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(e.g. exactly which flake version a package came from). It also
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has some helpful subcommands:
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* `nix profile history` shows what packages were added, upgraded
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or removed between each version of a profile.
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* `nix profile diff-closures` shows the changes between the
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closures of each version of a profile. This allows you to
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discover the addition or removal of dependencies or size
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changes.
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**Warning**: after a profile has been updated using `nix profile`,
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it is no longer useable with `nix-env`.
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- `nix store diff-closures` shows the differences between the
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closures of two store paths in terms of the versions and sizes of
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dependencies in the closures.
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- `nix store make-content-addressable` rewrites an arbitrary closure
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to make it content-addressed. Such paths can be copied into other
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stores without requiring signatures.
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- `nix bundle` uses the [`nix-bundle`
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program](https://github.com/matthewbauer/nix-bundle) to convert a
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closure into a self-extracting executable.
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- Various other replacements for the old CLI, e.g. `nix store gc`,
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`nix store delete`, `nix store repair`, `nix nar dump-path`, `nix
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store prefetch-file`, `nix store prefetch-tarball`, `nix key` and
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`nix daemon`.
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* Nix now has an **evaluation cache** for flake outputs. For example,
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a second invocation of the command `nix run nixpkgs#firefox` will
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not need to evaluate the `firefox` attribute because it's already in
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the evaluation cache. This is made possible by the hermetic
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evaluation model of flakes.
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* The new `--offline` flag disables substituters and causes all
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locally cached tarballs and repositories to be considered
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up-to-date.
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* The new `--refresh` flag causes all locally cached tarballs and
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repositories to be considered out-of-date.
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* Many `nix` subcommands now have a `--json` option to produce
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machine-readable output.
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* `nix repl` has a new `:doc` command to show documentation about
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builtin functions (e.g. `:doc builtins.map`).
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* Binary cache stores now have an option `index-debug-info` to create
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an index of DWARF debuginfo files for use by
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[`dwarffs`](https://github.com/edolstra/dwarffs).
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* To support flakes, Nix now has an extensible mechanism for fetching
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source trees. Currently it has the following backends:
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* Git repositories
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* Mercurial repositories
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* GitHub and GitLab repositories (an optimisation for faster
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fetching than Git)
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* Tarballs
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* Arbitrary directories
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The fetcher infrastructure is exposed via flake input specifications
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and via the `fetchTree` built-in.
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* **Languages changes**: the only new language feature is that you can
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now have antiquotations in paths, e.g. `./${foo}` instead of `./. +
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foo`.
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* **New built-in functions**:
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- `builtins.fetchTree` allows fetching a source tree using any
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backends supported by the fetcher infrastructure. It replaces
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`fetchGit`, `fetchMercurial` and `fetchTarball`.
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- `builtins.getFlake` fetches a flake and returns its output
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attributes. This function should not be used inside flakes! Use
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flake inputs instead.
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- `builtins.floor` and `builtins.ceil` round a floating-point number
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down and up, respectively.
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* Experimental support for recursive Nix. This means that Nix
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derivations can now call Nix to build other derivations. This is not
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in a stable state yet and not well
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[documented](https://github.com/NixOS/nix/commit/c4d7c76b641d82b2696fef73ce0ac160043c18da).
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* The new experimental feature `no-url-literals` disables URL
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literals. This helps to implement [RFC
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45](https://github.com/NixOS/rfcs/pull/45).
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* Nix now uses `libarchive` to decompress and unpack tarballs and zip
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files, so `tar` is no longer required.
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* The priority of substituters can now be overriden using the
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`priority` substituter setting (e.g. `--substituters
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'http://cache.nixos.org?priority=100 daemon?priority=10'`).
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* `nix edit` now supports non-derivation attributes, e.g. `nix edit
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.#nixosConfigurations.bla`.
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* The `nix` command now provides command line completion for `bash`,
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`zsh` and `fish`. Since the support for getting completions is built
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into `nix`, it's easy to add support for other shells.
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* The new `--log-format` flag selects what Nix's output looks like. It
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defaults to a terse progress indicator. There is a new
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`internal-json` output format for use by other programs.
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* `nix eval` has a new `--apply` flag that applies a function to the
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evaluation result.
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* `nix eval` has a new `--write-to` flag that allows it to write a
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nested attribute set of string leaves to a correspondingly directory
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tree.
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* Memory improvements: many operations that add paths to the store or
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copy paths between stores now run in constant memory.
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* Many `nix` commands now support the flag `--derivation` to operate
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on a `.drv` file itself instead of its outputs.
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* There is a new store called `dummy://` that does not support
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building or adding paths. This is useful if you want to use the Nix
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evaluator but don't have a Nix store.
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* The `ssh-ng://` store now allows substituting paths on the remote,
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as `ssh://` already did.
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* When auto-calling a function with an ellipsis, all arguments are now
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passed.
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* New `nix-shell` features:
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- It preserves the `PS1` environment variable if
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`NIX_SHELL_PRESERVE_PROMPT` is set.
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- With `-p`, it passes any `--arg`s as Nixpkgs arguments.
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* `nix-prefetch-url` has a new `--executable` flag.
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* On `x86_64` systems, [`x86_64` microarchitecture
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levels](https://lwn.net/Articles/844831/) are mapped to additional
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system types (e.g. `x86_64-v1-linux`).
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* The new `--eval-store` flag allows you to use a different store for
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evaluation than for building or storing the build result. This is
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primarily useful when you want to query whether something exists in
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a read-only store, such as a binary cache:
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```
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# nix path-info --json --store https://cache.nixos.org \
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--eval-store auto nixpkgs#hello
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```
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(Here `auto` indicates the local store.)
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* The Nix daemon has a new low-latency mechanism for copying
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closures. This is useful when building on remote stores such as
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`ssh-ng://`.
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* Plugins can now register `nix` subcommands.
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## Incompatible changes
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* The `nix` command is now marked as an experimental feature. This
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means that you need to add
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> experimental-features = nix-command
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to your `nix.conf` if you want to use it, or pass
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`--extra-experimental-features nix-command` on the command line.
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||||
|
||||
* `nix run` has been renamed to `nix shell`.
|
||||
|
||||
* 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
|
||||
any command, including a subcommand to `nix`. For example,
|
||||
`nix-instantiate default.nix --plugin-files ""` must now become
|
||||
`nix-instantiate --plugin-files "" default.nix`.
|
||||
|
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* We no longer release source tarballs. If you want to build from
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source, please build from the Git repository.
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## Contributors
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This release has contributions from
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Adam Höse,
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Albert Safin,
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Alex Kovar,
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Alex Zero,
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Alexander Bantyev,
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Alexandre Esteves,
|
||||
Alyssa Ross,
|
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Anatole Lucet,
|
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Anders Kaseorg,
|
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Andreas Rammhold,
|
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Antoine Eiche,
|
||||
Antoine Martin,
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Arnout Engelen,
|
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Arthur Gautier,
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aszlig,
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Ben Burdette,
|
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Benjamin Hipple,
|
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Bernardo Meurer,
|
||||
Björn Gohla,
|
||||
Bjørn Forsman,
|
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Bob van der Linden,
|
||||
Brian Leung,
|
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Brian McKenna,
|
||||
Brian Wignall,
|
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Bruce Toll,
|
||||
Bryan Richter,
|
||||
Calle Rosenquist,
|
||||
Calvin Loncaric,
|
||||
Carlo Nucera,
|
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Carlos D'Agostino,
|
||||
Chaz Schlarp,
|
||||
Christian Höppner,
|
||||
Christian Kampka,
|
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Chua Hou,
|
||||
Chuck,
|
||||
Cole Helbling,
|
||||
Daiderd Jordan,
|
||||
Dan Callahan,
|
||||
Dani,
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||||
Daniel Fitzpatrick,
|
||||
Danila Fedorin,
|
||||
Daniël de Kok,
|
||||
Danny Bautista,
|
||||
DavHau,
|
||||
David McFarland,
|
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Dima,
|
||||
Domen Kožar,
|
||||
Dominik Schrempf,
|
||||
Dominique Martinet,
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dramforever,
|
||||
Dustin DeWeese,
|
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edef,
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Eelco Dolstra,
|
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Emilio Karakey,
|
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Emily,
|
||||
Eric Culp,
|
||||
Ersin Akinci,
|
||||
Fabian Möller,
|
||||
Farid Zakaria,
|
||||
Federico Pellegrin,
|
||||
Finn Behrens,
|
||||
Florian Franzen,
|
||||
Félix Baylac-Jacqué,
|
||||
Gabriel Gonzalez,
|
||||
Geoff Reedy,
|
||||
Georges Dubus,
|
||||
Graham Christensen,
|
||||
Greg Hale,
|
||||
Greg Price,
|
||||
Gregor Kleen,
|
||||
Gregory Hale,
|
||||
Griffin Smith,
|
||||
Guillaume Bouchard,
|
||||
Harald van Dijk,
|
||||
illustris,
|
||||
Ivan Zvonimir Horvat,
|
||||
Jade,
|
||||
Jake Waksbaum,
|
||||
jakobrs,
|
||||
James Ottaway,
|
||||
Jan Tojnar,
|
||||
Janne Heß,
|
||||
Jaroslavas Pocepko,
|
||||
Jarrett Keifer,
|
||||
Jeremy Schlatter,
|
||||
Joachim Breitner,
|
||||
Joe Hermaszewski,
|
||||
Joe Pea,
|
||||
John Ericson,
|
||||
Jonathan Ringer,
|
||||
Josef Kemetmüller,
|
||||
Joseph Lucas,
|
||||
Jude Taylor,
|
||||
Julian Stecklina,
|
||||
Julien Tanguy,
|
||||
Jörg Thalheim,
|
||||
Kai Wohlfahrt,
|
||||
keke,
|
||||
Keshav Kini,
|
||||
Kevin Quick,
|
||||
Kevin Stock,
|
||||
Kjetil Orbekk,
|
||||
Krzysztof Gogolewski,
|
||||
kvtb,
|
||||
Lars Mühmel,
|
||||
Leonhard Markert,
|
||||
Lily Ballard,
|
||||
Linus Heckemann,
|
||||
Lorenzo Manacorda,
|
||||
Lucas Desgouilles,
|
||||
Lucas Franceschino,
|
||||
Lucas Hoffmann,
|
||||
Luke Granger-Brown,
|
||||
Madeline Haraj,
|
||||
Marwan Aljubeh,
|
||||
Mat Marini,
|
||||
Mateusz Piotrowski,
|
||||
Matthew Bauer,
|
||||
Matthew Kenigsberg,
|
||||
Mauricio Scheffer,
|
||||
Maximilian Bosch,
|
||||
Michael Adler,
|
||||
Michael Bishop,
|
||||
Michael Fellinger,
|
||||
Michael Forney,
|
||||
Michael Reilly,
|
||||
mlatus,
|
||||
Mykola Orliuk,
|
||||
Nathan van Doorn,
|
||||
Naïm Favier,
|
||||
ng0,
|
||||
Nick Van den Broeck,
|
||||
Nicolas Stig124 Formichella,
|
||||
Niels Egberts,
|
||||
Niklas Hambüchen,
|
||||
Nikola Knezevic,
|
||||
oxalica,
|
||||
p01arst0rm,
|
||||
Pamplemousse,
|
||||
Patrick Hilhorst,
|
||||
Paul Opiyo,
|
||||
Pavol Rusnak,
|
||||
Peter Kolloch,
|
||||
Philipp Bartsch,
|
||||
Philipp Middendorf,
|
||||
Piotr Szubiakowski,
|
||||
Profpatsch,
|
||||
Puck Meerburg,
|
||||
Ricardo M. Correia,
|
||||
Rickard Nilsson,
|
||||
Robert Hensing,
|
||||
Robin Gloster,
|
||||
Rodrigo,
|
||||
Rok Garbas,
|
||||
Ronnie Ebrin,
|
||||
Rovanion Luckey,
|
||||
Ryan Burns,
|
||||
Ryan Mulligan,
|
||||
Ryne Everett,
|
||||
Sam Doshi,
|
||||
Sam Lidder,
|
||||
Samir Talwar,
|
||||
Samuel Dionne-Riel,
|
||||
Sebastian Ullrich,
|
||||
Sergei Trofimovich,
|
||||
Sevan Janiyan,
|
||||
Shao Cheng,
|
||||
Shea Levy,
|
||||
Silvan Mosberger,
|
||||
Stefan Frijters,
|
||||
Stefan Jaax,
|
||||
sternenseemann,
|
||||
Steven Shaw,
|
||||
Stéphan Kochen,
|
||||
SuperSandro2000,
|
||||
Suraj Barkale,
|
||||
Taeer Bar-Yam,
|
||||
Thomas Churchman,
|
||||
Théophane Hufschmitt,
|
||||
Timothy DeHerrera,
|
||||
Timothy Klim,
|
||||
Tobias Möst,
|
||||
Tobias Pflug,
|
||||
Tom Bereknyei,
|
||||
Travis A. Everett,
|
||||
Ujjwal Jain,
|
||||
Vladimír Čunát,
|
||||
Wil Taylor,
|
||||
Will Dietz,
|
||||
Yaroslav Bolyukin,
|
||||
Yestin L. Harrison,
|
||||
YI,
|
||||
Yorick van Pelt,
|
||||
Yuriy Taraday and
|
||||
zimbatm.
|
||||
|
|
|
|||
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Reference in a new issue