Pkg-config not found by buildRustPackage

Help
1

I’m trying to package a Rust application as such:

{rustPlatform, fetchFromGitHub, pkg-config, lib, udev}:
rustPlatform.buildRustPackage rec {
  pname = "rust-streamdeck";
  version = "0.9.0";

  src = fetchFromGitHub {
    owner = "ryankurte";
    repo = "rust-streamdeck";
    rev = "v${version}";
    hash = "sha256-9FuTnRQHKYJzMqhhgyTVq2R+drn4HAr3GDNjQgc3r+w=";
  };

  postPatch = ''
    ln -s ${./Cargo.lock} Cargo.lock
  '';

  cargoLock = {
    lockFile = ./Cargo.lock;
  };

  nativeBuildinputs = [ pkg-config ];
  buildinputs = [ udev.dev ];

  doInstallCheck = false;
  installPhase = ''
    mkdir -p $out/lib/udev/rules.d
    cp $src/40-streamdeck.rules $out/lib/udev/rules.d/
  '';

  meta = {
    description = "ibusb based driver for Elgato StreamDeck devices";
    homepage = "https://github.com/ryankurte/rust-streamdeck";
    license = lib.licenses.mpl20;
    maintainers = [ lib.maintainers.blackheaven ];
    mainProgram = "streamdeck-cli";
  };
}

See the full code here.

However, when I build it, it does not find pkg-config:

rust-streamdeck>   thread 'main' panicked at /build/cargo-vendor-dir/hidapi-2.6.3/build.rs:61:54:
rust-streamdeck>   Unable to find libudev: Could not run `PKG_CONFIG_ALLOW_SYSTEM_LIBS=1 PKG_CONFIG_ALLOW_SYSTEM_CFLAGS=1 pkg-config --libs --cflags libudev`
rust-streamdeck>   The pkg-config command could not be found.
rust-streamdeck>   Most likely, you need to install a pkg-config package for your OS.
rust-streamdeck>   Try `apt install pkg-config`, or `yum install pkg-config`,
rust-streamdeck>   or `pkg install pkg-config`, or `apk add pkgconfig` depending on your distribution.
rust-streamdeck>   If you've already installed it, ensure the pkg-config command is one of the
rust-streamdeck>   directories in the PATH environment variable.
rust-streamdeck>   If you did not expect this build to link to a pre-installed system library,
rust-streamdeck>   then check documentation of the hidapi crate for an option to
rust-streamdeck>   build the library from source, or disable features or dependencies
rust-streamdeck>   that require pkg-config.
rust-streamdeck>   note: run with `RUST_BACKTRACE=1` environment variable to display a backtrace

I works in another package

rustPlatform.buildRustPackage rec {
  nativeBuildInputs = [
    pkg-config
    glib # for glib-compile-resources
    wrapGAppsHook3
  ];

  buildInputs = [
    gtk3
    hidapi
    libusb1
    udev
  ];
  # ...
}

Is there something I should change to make it work?

Thanks in advance for your help.

2

Typo, use buildInputs not buildinputs, and nativeBuildInputs instead of nativeBuildinputs. And remove the .dev.

1 Like
3

I’m a bit ashamed, thanks for your help!

4

Happens to the best of us. Actually the only shameful thing here is that there’s no warning for incorrect attrnames passed to builders (because currently any extraneous attrs are treated as envvars in the derivation builtin, which nixpkgs inherited without improving beyond adding env).

2 Likes