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flake.nix
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flake.nix
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{
inputs = {
nixpkgs.url = "github:NixOS/nixpkgs/nixpkgs-unstable";
crane.url = "github:ipetkov/crane";
crane.inputs.nixpkgs.follows = "nixpkgs";
rust-overlay.url = "github:oxalica/rust-overlay";
flake-utils.url = "github:numtide/flake-utils";
};
outputs = { self, nixpkgs, crane, rust-overlay, flake-utils }:
flake-utils.lib.eachDefaultSystem (system:
let
overlays = [ (import rust-overlay) ];
pkgs = import nixpkgs {
inherit system overlays;
};
inherit (pkgs) lib;
rust-toolchain = pkgs.rust-bin.stable.latest.default;
rust-dev-toolchain = pkgs.rust-bin.stable.latest.default.override {
extensions = [ "rust-src" "rust-analyzer" ];
};
craneLib = (crane.mkLib pkgs).overrideToolchain rust-toolchain;
src = craneLib.cleanCargoSource ./.;
buildInputs = [
pkgs.bintools
] ++ lib.optionals pkgs.stdenv.isDarwin [
# Additional darwin specific inputs can be set here
pkgs.libiconv
];
cargoArtifacts = craneLib.buildDepsOnly {
inherit src buildInputs;
};
# Build the actual crate itself, reusing the dependency
# artifacts from above.
nucleoid-backend = craneLib.buildPackage {
inherit cargoArtifacts src buildInputs;
};
in
{
checks = {
# Build the crate as part of `nix flake check` for convenience
inherit nucleoid-backend;
# Run clippy (and deny all warnings) on the crate source,
# again, resuing the dependency artifacts from above.
#
# Note that this is done as a separate derivation so that
# we can block the CI if there are issues here, but not
# prevent downstream consumers from building our crate by itself.
nucleoid-backend-clippy = craneLib.cargoClippy {
inherit cargoArtifacts src buildInputs;
cargoClippyExtraArgs = "--all-targets -- --deny warnings";
};
# Check formatting
nucleoid-backend-fmt = craneLib.cargoFmt {
inherit src;
};
};
packages.default = nucleoid-backend;
apps.default = flake-utils.lib.mkApp {
drv = nucleoid-backend;
};
devShells.default = pkgs.mkShell {
inputsFrom = builtins.attrValues self.checks;
# Extra inputs can be added here
nativeBuildInputs = with pkgs; [
rust-dev-toolchain
];
};
});
}