ros_new 0.1.0

little cargo plugin to produce cargo projects with `package.xml`
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{
  description = "Rust development environment";

  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
        pkgs = nixpkgs.legacyPackages.${system};
        # Import the package from package.nix
        ros-new = import ./package.nix {
          inherit (pkgs)
            lib
            stdenv
            rustPlatform
            pkg-config
            openssl
            darwin
            ;
          fetchFromGitLab = pkgs.fetchFromGitLab;
        };
      in
      {
        packages = {
          default = ros-new;
          ros-new = ros-new;
        };

        devShells.default = pkgs.mkShell rec {
          nativeBuildInputs = [ pkgs.pkg-config ];
          buildInputs = with pkgs; [
            clang
            llvmPackages.bintools
            rustup
            openssl
          ];

          # Read the rust-toolchain.toml if it exists
          RUSTC_VERSION =
            if (builtins.pathExists (self + "/rust-toolchain.toml")) then
              (builtins.fromTOML (builtins.readFile (self + "/rust-toolchain.toml"))).toolchain.channel
            else
              "stable";

          LIBCLANG_PATH = pkgs.lib.makeLibraryPath [ pkgs.llvmPackages_latest.libclang.lib ];

          shellHook = ''
            export CARGO_HOME="$NIX_BUILD_TOP/cargo_home"
            mkdir -p "$CARGO_HOME"

            export RUSTUP_HOME="$NIX_BUILD_TOP/rustup_home"
            mkdir -p "$RUSTUP_HOME"

            export PATH=$PATH:$CARGO_HOME/bin
            export PATH=$PATH:$RUSTUP_HOME/toolchains/$RUSTC_VERSION-x86_64-unknown-linux-gnu/bin/
          '';

          RUSTFLAGS = (builtins.map (a: ''-L ${a}/lib'') [ ]);
          LD_LIBRARY_PATH = pkgs.lib.makeLibraryPath (buildInputs ++ nativeBuildInputs);

          BINDGEN_EXTRA_CLANG_ARGS =
            (builtins.map (a: ''-I"${a}/include"'') [
              pkgs.glibc.dev
            ])
            ++ [
              ''-I"${pkgs.llvmPackages_latest.libclang.lib}/lib/clang/${pkgs.llvmPackages_latest.libclang.version}/include"''
              ''-I"${pkgs.glib.dev}/include/glib-2.0"''
              ''-I${pkgs.glib.out}/lib/glib-2.0/include/''
            ];
        };
      }
    );
}