https://github.com/edolstra/import-cargo

A function for fetching the crates listed in a Cargo lock file
https://github.com/edolstra/import-cargo

Last synced: 3 months ago
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A function for fetching the crates listed in a Cargo lock file

• Host: GitHub
• URL: https://github.com/edolstra/import-cargo
• Owner: edolstra
• Created: 2019-07-05T14:55:00.000Z (over 5 years ago)
• Default Branch: master
• Last Pushed: 2022-04-04T20:34:27.000Z (almost 3 years ago)
• Last Synced: 2024-08-03T01:37:47.632Z (6 months ago)
• Language: Nix
• Homepage:
• Size: 5.86 KB
• Stars: 51
• Watchers: 6
• Forks: 12
• Open Issues: 3
• Metadata Files:
  • Readme: README.md

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README

        
# `import-cargo`

Simple [flake](https://www.tweag.io/blog/2020-05-25-flakes/) to import all dependencies from

a [`Cargo.lock`](https://doc.rust-lang.org/cargo/guide/cargo-toml-vs-cargo-lock.html)

as [fixed-output derivation](https://nixos.org/nix/manual/#fixed-output-drvs) using the

checksum and URL from the lockfile.

## Usage

This example demonstrates how to build a local Cargo project with a

`flake.nix`:

``` nix

{

  description = "My Rust project";

  inputs = {

    nixpkgs.url = github:NixOS/nixpkgs/nixos-20.03;

    import-cargo.url = github:edolstra/import-cargo;

  };

  outputs = { self, nixpkgs, import-cargo }: let

    inherit (import-cargo.builders) importCargo;

  in {

    defaultPackage.x86_64-linux =

      with import nixpkgs { system = "x86_64-linux"; };

      stdenv.mkDerivation {

        name = "testrust";

        src = self;

        nativeBuildInputs = [

          # setupHook which makes sure that a CARGO_HOME with vendored dependencies

          # exists

          (importCargo { lockFile = ./Cargo.lock; inherit pkgs; }).cargoHome

          # Build-time dependencies

          rustc cargo

        ];

        buildPhase = ''

          cargo build --release --offline

        '';

        installPhase = ''

          install -Dm775 ./target/release/testrust $out/bin/testrust

        '';

      };

  };

}

```