Simple flake to import all dependencies from
a Cargo.lock
as fixed-output derivation using the
checksum and URL from the lockfile.
This example demonstrates how to build a local Cargo project with a
flake.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
'';
};
};
}