nickel 1.9.0

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Created by brew bump

---

Created with brew bump-formula-pr.

release notes

Nickel 1.9 includes various bug fixes and quality of life improvements.
Noteworthy additions are:

let-blocks: declaring several variables at once instead of chaining

let ... in ...
explicit import: the ability to specify explicitly the format of an imported

file (it was based on the file extension implicitly and would default

to Nickel), e.g. as import "foo.txt" as 'Json or import "bar.ncl" as 'Text.
the addition of a nickel test command that can extract snippets from the

in-code documentation (the | doc metadata) together with their expected

result and run them. The feature is detailed in a new CLI chapter of the user

manual.

Two important future evolutions have been designed and discussed through RFCs:

package management and a performant bytecode virtual machine. Those features

aren't implemented yet, but the initial designs have been agreed upon.
Breaking changes

Formatting: the formatting of let bindings has been fixed and improved. To

avoid a large, irrelevant diff on your next commits, we advise formatting your

whole codebase first after upgrading to 1.9 in a separate commit.

Core language

Let blocks by @jneem (#2010,

#2031,

#2051)
Fix unsound record contract deduplication by @yannham in Fix unsound record contract deduplication tweag/nickel#2042
Explicit import format: import "sample.html" as 'Text by @vi

(#2036,

#2070)
Thunks for resolved imports (detect import infinite loops and avoid work duplication) by @jneem in Thunks for resolved imports tweag/nickel#2052
Use a persistent vector to represent arrays instead of an Rc<[..]> by @jneem in [#2057](Use a persistent vector instead of an Rc<[..]> tweag/nickel#2057

Documentation

Add a manual chapter for the cli. by @jneem in Add a manual chapter for the cli. tweag/nickel#2065
[RFC006] Package management by @jneem in Package management rfc tweag/nickel#1983
[RFC007] Bytecode interpreter by @yannham in [RFC007] Bytecode interpreter tweag/nickel#2045

LSP

Remove the option for an external formatter in nls by @jneem in Remove the option for an external formatter in nls tweag/nickel#2064
Fix completions in incomplete field name position. by @jneem in Fix completions in incomplete field name position. tweag/nickel#2069
Bound the length of nls completions by @jneem in Bound the length of nls completions tweag/nickel#2073

Tooling

Add --format argument to nickel query command by @suimong in Add --format argument to nickel query command tweag/nickel#2015
Adds a nickel test subcommand for testing examples in docs. by @jneem in Adds a nickel test subcommand for testing examples in docs. tweag/nickel#2020
Detect infinite recursions in nickel doc by @yannham in Detect infinite recursions in nickel doc tweag/nickel#2055
Strict typechecking mode by @jneem in Strict typechecking mode tweag/nickel#2077
Switch to toml-edit for spanned deserialization fixing TOML deserialization bug by @jneem in Switch to toml-edit for spanned deserialization tweag/nickel#2074
Make serde-wasm-bindgen optional in core by @akavel in Make serde-wasm-bindgen optional in core tweag/nickel#2089
Move 'clap' crate dependency behind feature flag in core by @akavel in Move 'clap' crate dependency behind feature flag in core tweag/nickel#2090

New Contributors

@vi made their first contribution in Explicit imports: import 'Raw "sample.html" tweag/nickel#2036
@epompeii made their first contribution in Update Bencher CLI usage tweag/nickel#2087
@akavel made their first contribution in Make serde-wasm-bindgen optional in core tweag/nickel#2089

Full Changelog: tweag/nickel@1.8.1...1.9.0

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