flake.nix

{
  inputs = {
    nixpkgs.url = "github:NixOS/nixpkgs/nixos-unstable";
    flake-utils.url = "github:numtide/flake-utils";
  };
  outputs = { self, nixpkgs, flake-utils }:
    flake-utils.lib.eachDefaultSystem
      (system:
        let
          overrides = (builtins.fromTOML (builtins.readFile ./rust-toolchain.toml));
          libPath = with pkgs; lib.makeLibraryPath [
            # load external libraries that you need in your rust project here
          ];
          pkgs = import nixpkgs {
            inherit system;
          };
        in
        with pkgs;
        {
          devShells.default = mkShell {
            buildInputs = [
              clang
              llvmPackages.bintools
              wasm-pack
              nodePackages.http-server
              just
            ];
            RUSTC_VERSION = overrides.toolchain.channel;
            # https://github.com/rust-lang/rust-bindgen#environment-variables
            LIBCLANG_PATH = lib.makeLibraryPath [ llvmPackages_latest.libclang.lib ];
            shellHook = ''
              export PATH=$PATH:''${CARGO_HOME:-~/.cargo}/bin
              export PATH=$PATH:''${RUSTUP_HOME:-~/.rustup}/toolchains/$RUSTC_VERSION-x86_64-unknown-linux-gnu/bin/
              '';
            # Add precompiled library to rustc search path
            RUSTFLAGS = (builtins.map (a: ''-L ${a}/lib'') [
              # add libraries here (e.g. pkgs.libvmi)
            ]);
            LD_LIBRARY_PATH = libPath;
            # Add glibc, clang, glib, and other headers to bindgen search path
            BINDGEN_EXTRA_CLANG_ARGS =
            # Includes normal include path
            (builtins.map (a: ''-I"${a}/include"'') [
              # add dev libraries here (e.g. pkgs.libvmi.dev)
              pkgs.glibc.dev
            ])
            # Includes with special directory paths
            ++ [
              ''-I"${llvmPackages_latest.libclang.lib}/lib/clang/${pkgs.llvmPackages_latest.libclang.version}/include"''
              ''-I"${glib.dev}/include/glib-2.0"''
              ''-I${glib.out}/lib/glib-2.0/include/''
            ];
          };
        }
      );
}