bhwi/flake.nix at main · wizardsardine/bhwi · GitHub

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{
  description = "Minimal rust wasm32-unknown-unknown example";

  inputs = {
    flake-utils.url = "github:numtide/flake-utils";
    rust-overlay = {
      url = "github:oxalica/rust-overlay";
      inputs.nixpkgs.follows = "nixpkgs";
    };
    nixpkgs.url = "nixpkgs/nixos-unstable";
  };

  outputs = {
    self,
    nixpkgs,
    flake-utils,
    rust-overlay,
  }:
    flake-utils.lib.eachDefaultSystem (
      system: let
        overlays = [rust-overlay.overlays.default];
        pkgs = import nixpkgs {inherit system overlays;};
        rust = pkgs.rust-bin.fromRustupToolchainFile ./rust-toolchain.toml;
        inputs = [
          rust
          pkgs.rust-analyzer
          pkgs.openssl
          pkgs.zlib
          pkgs.gcc
          pkgs.pkg-config
          pkgs.wasm-pack
          pkgs.wasm-bindgen-cli
          pkgs.binaryen
          pkgs.clang
          pkgs.corepack_20
          pkgs.nodejs_20
        ];
      in {
        packages.default = pkgs.rustPlatform.buildRustPackage {
          name = "bhwi";
          src = ./.;

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

          nativeBuildInputs = inputs;
        };

        devShells.default = pkgs.mkShell {
          packages = inputs;
          shellHook = ''
            export LIBCLANG_PATH=${pkgs.libclang.lib}/lib/
            export LD_LIBRARY_PATH=${pkgs.openssl}/lib:$LD_LIBRARY_PATH
            export CC_wasm32_unknown_unknown=${pkgs.llvmPackages.clang-unwrapped}/bin/clang
            export CFLAGS_wasm32_unknown_unknown="-I ${pkgs.llvmPackages.libclang.lib}/lib/clang/21.1.8/include/"
          '';
        };

        apps.website = {
          type = "app";
          program = toString (pkgs.writeShellScript "run-website" ''
            export PATH="${pkgs.lib.makeBinPath inputs}:$PATH"
            export LIBCLANG_PATH=${pkgs.libclang.lib}/lib/
            export CC_wasm32_unknown_unknown=${pkgs.llvmPackages.clang-unwrapped}/bin/clang
            export CFLAGS_wasm32_unknown_unknown="-I ${pkgs.llvmPackages.libclang.lib}/lib/clang/21.1.8/include/"
            wasm-pack build bhwi-wasm --out-dir ../website/pkg --target web
            cd website && npm install && npm run dev
          '');
        };
      }
    );
}