mirror of
https://github.com/privatevoid-net/nix-super.git
synced 2024-11-15 10:46:15 +02:00
eb7d7780b1
This is needed to avoid this https://github.com/mesonbuild/meson/issues/13774 when we go back to making our subproject directory `src`.
42 lines
1.7 KiB
Markdown
42 lines
1.7 KiB
Markdown
# Release 2.17 (2023-07-24)
|
|
|
|
* [`nix-channel`](../command-ref/nix-channel.md) now supports a `--list-generations` subcommand.
|
|
|
|
* The function [`builtins.fetchClosure`](../language/builtins.md#builtins-fetchClosure) can now fetch input-addressed paths in [pure evaluation mode](../command-ref/conf-file.md#conf-pure-eval), as those are not impure.
|
|
|
|
* Nix now allows unprivileged/[`allowed-users`](../command-ref/conf-file.md#conf-allowed-users) to sign paths.
|
|
Previously, only [`trusted-users`](../command-ref/conf-file.md#conf-trusted-users) users could sign paths.
|
|
|
|
* Nested dynamic attributes are now merged correctly by the parser. For example:
|
|
|
|
```nix
|
|
{
|
|
nested = {
|
|
foo = 1;
|
|
};
|
|
nested = {
|
|
${"ba" + "r"} = 2;
|
|
};
|
|
}
|
|
```
|
|
|
|
This used to silently discard `nested.bar`, but now behaves as one would expect and evaluates to:
|
|
|
|
```nix
|
|
{ nested = { bar = 2; foo = 1; }; }
|
|
```
|
|
|
|
Note that the feature of merging multiple *full declarations* of attribute sets like `nested` in the example is of questionable value.
|
|
It allows writing expressions that are very hard to read, for instance when there are many lines of code between two declarations of the same attribute.
|
|
This has been around for a long time and is therefore supported for backwards compatibility, but should not be relied upon.
|
|
|
|
Instead, consider using the *nested attribute path* syntax:
|
|
|
|
```nix
|
|
{
|
|
nested.foo = 1;
|
|
nested.${"ba" + "r"} = 2;
|
|
}
|
|
```
|
|
|
|
* Tarball flakes can now redirect to an "immutable" URL that will be recorded in lock files. This allows the use of "mutable" tarball URLs like `https://example.org/hello/latest.tar.gz` in flakes. See the [tarball fetcher](../protocols/tarball-fetcher.md) for details.
|