conduit/nix/pkgs/default/default.nix

# Dependencies (keep sorted)
{
  craneLib,
  inputs,
  lib,
  pkgsBuildHost,
  rocksdb,
  rust,
  stdenv,
  # Options (keep sorted)
  default-features ? true,
  features ? [],
  profile ? "release",
}: let
  buildDepsOnlyEnv = let
    rocksdb' = rocksdb.override {
      enableJemalloc = builtins.elem "jemalloc" features;
    };
  in
    {
      NIX_OUTPATH_USED_AS_RANDOM_SEED = "randomseed"; # https://crane.dev/faq/rebuilds-bindgen.html
      ROCKSDB_INCLUDE_DIR = "${rocksdb'}/include";
      ROCKSDB_LIB_DIR = "${rocksdb'}/lib";
    }
    // (import ./cross-compilation-env.nix {
      # Keep sorted
      inherit
        lib
        pkgsBuildHost
        rust
        stdenv
        ;
    });

  buildPackageEnv =
    {
      CONDUIT_VERSION_EXTRA = inputs.self.shortRev or inputs.self.dirtyShortRev;
    }
    // buildDepsOnlyEnv;

  commonAttrs = {
    inherit
      (craneLib.crateNameFromCargoToml {
        cargoToml = "${inputs.self}/Cargo.toml";
      })
      pname
      version
      ;

    src = let
      filter = inputs.nix-filter.lib;
    in
      filter {
        root = inputs.self;

        # Keep sorted
        include = [
          "Cargo.lock"
          "Cargo.toml"
          "src"
        ];
      };

    nativeBuildInputs = [
      # bindgen needs the build platform's libclang. Apparently due to "splicing
      # weirdness", pkgs.rustPlatform.bindgenHook on its own doesn't quite do the
      # right thing here.
      pkgsBuildHost.rustPlatform.bindgenHook
    ];

    CARGO_PROFILE = profile;
  };
in
  craneLib.buildPackage (commonAttrs
    // {
      cargoArtifacts = craneLib.buildDepsOnly (commonAttrs
        // {
          env = buildDepsOnlyEnv;
        });

      cargoExtraArgs =
        "--locked "
        + lib.optionalString
        (!default-features)
        "--no-default-features "
        + lib.optionalString
        (features != [])
        "--features "
        + (builtins.concatStringsSep "," features);

      # This is redundant with CI
      doCheck = false;

      env = buildPackageEnv;

      passthru = {
        env = buildPackageEnv;
      };

      meta.mainProgram = commonAttrs.pname;
    })