{ lib, stdenv, makeWrapper, wrapRustc, bash, curl, darwin, zlib
, autoPatchelfHook, gcc
, version
, src
, platform
, versionType
}:

let
  inherit (lib) optionalString;
  inherit (darwin.apple_sdk.frameworks) Security;

  bootstrapping = versionType == "bootstrap";

  installComponents
    = "rustc,rust-std-${platform}"
    + (optionalString bootstrapping ",cargo")
    ;
in

rec {
  rustc-unwrapped = stdenv.mkDerivation {
    pname = "rustc-${versionType}";

    inherit version;
    inherit src;

    meta = with lib; {
      homepage = "https://www.rust-lang.org/";
      sourceProvenance = with sourceTypes; [ binaryNativeCode ];
      description = "Safe, concurrent, practical language";
      maintainers = with maintainers; [ qknight ];
      license = [ licenses.mit licenses.asl20 ];
    };

    nativeBuildInputs = lib.optional (!stdenv.hostPlatform.isDarwin) autoPatchelfHook;
    buildInputs = [ bash ]
      ++ lib.optional (!stdenv.hostPlatform.isDarwin && !stdenv.hostPlatform.isFreeBSD) gcc.cc.lib
      ++ lib.optional (!stdenv.hostPlatform.isDarwin) zlib
      ++ lib.optional stdenv.hostPlatform.isDarwin Security;

    postPatch = ''
      patchShebangs .
    '';

    installPhase = ''
      ./install.sh --prefix=$out \
        --components=${installComponents}

      # Do NOT, I repeat, DO NOT use `wrapProgram` on $out/bin/rustc
      # (or similar) here. It causes strange effects where rustc loads
      # the wrong libraries in a bootstrap-build causing failures that
      # are very hard to track down. For details, see
      # https://github.com/rust-lang/rust/issues/34722#issuecomment-232164943
    '';

    # The strip tool in cctools 973.0.1 and up appears to break rlibs in the
    # binaries. The lib.rmeta object inside the ar archive should contain an
    # .rmeta section, but it is removed. Luckily, this doesn't appear to be an
    # issue for Rust builds produced by Nix.
    dontStrip = true;

    setupHooks = ./setup-hook.sh;

    passthru = rec {
      tier1TargetPlatforms = [
        # Platforms with host tools from
        # https://doc.rust-lang.org/nightly/rustc/platform-support.html
        "x86_64-darwin" "i686-darwin" "aarch64-darwin"
        "i686-freebsd" "x86_64-freebsd"
        "x86_64-solaris"
        "aarch64-linux" "armv6l-linux" "armv7l-linux" "i686-linux"
        "loongarch64-linux" "powerpc64-linux" "powerpc64le-linux"
        "riscv64-linux" "s390x-linux" "x86_64-linux"
        "aarch64-netbsd" "armv7l-netbsd" "i686-netbsd" "powerpc-netbsd"
        "x86_64-netbsd"
        "i686-openbsd" "x86_64-openbsd"
        "i686-windows" "x86_64-windows"
      ];
      targetPlatforms = tier1TargetPlatforms ++ [
        # Platforms without host tools from
        # https://doc.rust-lang.org/nightly/rustc/platform-support.html
        "armv7a-darwin"
        "armv5tel-linux" "armv7a-linux" "m68k-linux" "mips-linux"
        "mips64-linux" "mipsel-linux" "mips64el-linux" "riscv32-linux"
        "armv6l-netbsd" "mipsel-netbsd" "riscv64-netbsd"
        "x86_64-redox"
        "wasm32-wasi"
      ];
      badTargetPlatforms = [
        # Rust is currently unable to target the n32 ABI
        lib.systems.inspect.patterns.isMips64n32
      ];
    };
  };

  rustc = wrapRustc rustc-unwrapped;

  cargo = stdenv.mkDerivation {
    pname = "cargo-${versionType}";

    inherit version;
    inherit src;

    meta = with lib; {
      homepage = "https://doc.rust-lang.org/cargo/";
      sourceProvenance = with sourceTypes; [ binaryNativeCode ];
      description = "Rust package manager";
      maintainers = with maintainers; [ qknight ];
      license = [ licenses.mit licenses.asl20 ];
    };

    nativeBuildInputs = [ makeWrapper ]
      ++ lib.optional (!stdenv.hostPlatform.isDarwin) autoPatchelfHook;
    buildInputs = [ bash ]
      ++ lib.optional (!stdenv.hostPlatform.isDarwin && !stdenv.hostPlatform.isFreeBSD) gcc.cc.lib
      ++ lib.optional stdenv.hostPlatform.isDarwin Security;

    postPatch = ''
      patchShebangs .
    '';

    installPhase = ''
      patchShebangs ./install.sh
      ./install.sh --prefix=$out \
        --components=cargo

      wrapProgram "$out/bin/cargo" \
        --suffix PATH : "${rustc}/bin"
    '';
  };
}