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Update fetchTree docs

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This commit is contained in:
Eelco Dolstra 2023-09-28 17:08:26 +02:00
parent 856fe13533
commit 4ce7a53a9c
1 changed files with 8 additions and 11 deletions
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19
src/libexpr/primops/fetchTree.cc
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@ -177,12 +177,12 @@ static RegisterPrimOp primop_fetchTree({
.args = {"input"},
.doc = R"(
Fetch a source tree or a plain file using one of the supported backends.
*input* can be an attribute set representation of [flake reference](@docroot@/command-ref/new-cli/nix3-flake.md#flake-references) or a URL.
The input should be "locked", that is, it should contain a commit hash or content hash unless impure evaluation (`--impure`) is allowed.
*input* must be a [flake reference](@docroot@/command-ref/new-cli/nix3-flake.md#flake-references), either in attribute set representation or in the URL-like syntax.
The input should be "locked", that is, it should contain a commit hash or content hash unless impure evaluation (`--impure`) is enabled.
Here are some examples of how to use `fetchTree`:
- Fetch a GitHub repository:
- Fetch a GitHub repository using the attribute set representation:
```nix
builtins.fetchTree {
@ -193,7 +193,7 @@ static RegisterPrimOp primop_fetchTree({
}
```
This evaluates to attribute set:
This evaluates to the following attribute set:
```
{
@ -205,15 +205,12 @@ static RegisterPrimOp primop_fetchTree({
shortRev = "ae2e6b3";
}
```
- Fetch a single file from a URL:
```nix
builtins.fetchTree "https://example.com/"
- Fetch the same GitHub repository using the URL-like syntax:
```
builtins.fetchTree "github:NixOS/nixpkgs/ae2e6b3958682513d28f7d633734571fb18285dd"
```
> **Note**
>
> This function requires the [`flakes` experimental feature](@docroot@/contributing/experimental-features.md#xp-feature-flakes) to be enabled.
)",
.fun = prim_fetchTree,
.experimentalFeature = Xp::Flakes,