mirror of
https://github.com/privatevoid-net/nix-super.git
synced 2024-11-30 01:26:15 +02:00
53 lines
1.3 KiB
Markdown
53 lines
1.3 KiB
Markdown
---
|
|
synopsis: "`nix-repl`'s `:doc` shows documentation comments"
|
|
significance: significant
|
|
issues:
|
|
- 3904
|
|
- 10771
|
|
prs:
|
|
- 1652
|
|
- 9054
|
|
- 11072
|
|
---
|
|
|
|
`nix repl` has a `:doc` command that previously only rendered documentation for internally defined functions.
|
|
This feature has been extended to also render function documentation comments, in accordance with [RFC 145].
|
|
|
|
Example:
|
|
|
|
```
|
|
nix-repl> :doc lib.toFunction
|
|
Function toFunction
|
|
… defined at /home/user/h/nixpkgs/lib/trivial.nix:1072:5
|
|
|
|
Turns any non-callable values into constant functions. Returns
|
|
callable values as is.
|
|
|
|
Inputs
|
|
|
|
v
|
|
|
|
: Any value
|
|
|
|
Examples
|
|
|
|
:::{.example}
|
|
|
|
## lib.trivial.toFunction usage example
|
|
|
|
| nix-repl> lib.toFunction 1 2
|
|
| 1
|
|
|
|
|
| nix-repl> lib.toFunction (x: x + 1) 2
|
|
| 3
|
|
|
|
:::
|
|
```
|
|
|
|
Known limitations:
|
|
- It does not render documentation for "formals", such as `{ /** the value to return */ x, ... }: x`.
|
|
- Some extensions to markdown are not yet supported, as you can see in the example above.
|
|
|
|
We'd like to acknowledge Yingchi Long for proposing a proof of concept for this functionality in [#9054](https://github.com/NixOS/nix/pull/9054), as well as @sternenseemann and Johannes Kirschbauer for their contributions, proposals, and their work on [RFC 145].
|
|
|
|
[RFC 145]: https://github.com/NixOS/rfcs/pull/145
|