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doc: update buildRustPackage documentation

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Fixes some mistakes regarding the references to cargoHash in the codes referenced.
Fixes a typo for cargoSha256.
States that cargoHash should be preferred.
This commit is contained in:
Gabriel Lopes Rodrigues 2023-12-21 22:01:17 -03:00
parent 02b3c06b1c
commit d3a7f45716
1 changed files with 11 additions and 10 deletions
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21
doc/languages-frameworks/rust.section.md
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@ -44,21 +44,22 @@ rustPlatform.buildRustPackage rec {
}
```
`buildRustPackage` requires either the `cargoSha256` or the
`cargoHash` attribute which is computed over all crate sources of this
package. `cargoHash256` is used for traditional Nix SHA-256 hashes,
such as the one in the example above. `cargoHash` should instead be
used for [SRI](https://www.w3.org/TR/SRI/) hashes. For example:
Exception: If the application has cargo `git` dependencies, the `cargoHash`/`cargoSha256`
approach will not work, and you will need to copy the `Cargo.lock` file of the application
to nixpkgs and continue with the next section for specifying the options of the`cargoLock`
section.
`buildRustPackage` requires either the `cargoHash` or the `cargoSha256`
attribute which is computed over all crate sources of this package.
`cargoSha256` is used for traditional Nix SHA-256 hashes. `cargoHash` should
instead be used for [SRI](https://www.w3.org/TR/SRI/) hashes and should be
preferred. For example:
```nix
cargoHash = "sha256-l1vL2ZdtDRxSGvP0X/l3nMw8+6WF67KPutJEzUROjg8=";
```
Exception: If the application has cargo `git` dependencies, the `cargoHash`/`cargoSha256`
approach will not work, and you will need to copy the `Cargo.lock` file of the application
to nixpkgs and continue with the next section for specifying the options of the `cargoLock`
section.
Both types of hashes are permitted when contributing to nixpkgs. The
Cargo hash is obtained by inserting a fake checksum into the
expression and building the package once. The correct checksum can