{ pkgs, stdenv, fetchurl, version, ... }:  with pkgs;

let 
    systemTriple = {
        "x86_64-darwin" = {
            system = "darwin-amd64";
            sha256 = "ccdb2760be48c2f51106fcc16c995cbd7d1a64cd5f742f44c9cba8ddc9bcba9c";
        };
        "aarch64-darwin" = {
            system = "darwin-arm64";
            sha256 = "9c3dbbb237e45c23f166911ad728d7b88e513ffdb9ac7ba8c7c77b41591945a6";
        };
        "x86_64-linux" = {
            system = "linux-amd64";
            sha256 = "26618ff738a8bb3490148d64be933e7a399089b28ff1434f0d78663640425a2f";
        };
        "aarch64-linux" = {
            system = "linux-armv7";
            sha256 = "f6086b37866b4ea2b9e4204d171d18fdcd44c7d81d2c1a0b22a305f369d204a3";
        };
    };
    currentTriple = systemTriple."${stdenv.targetPlatform.system}";
in
stdenv.mkDerivation {
    name = "clash-premium";
    src = fetchurl {
        url = "https://github.com/Dreamacro/clash/releases/download/premium/clash-${currentTriple.system}-${version}.gz";
        sha256 = currentTriple.sha256;
    };
    dontConfigure = true;
    dontBuild = true;
    dontPatchELF = true;
    doInstallCheck = true;

    unpackPhase = ''
        FILENAME=$(${coreutils}/bin/basename $src)
        ${coreutils}/bin/cp $src clash.gz
        ${gzip}/bin/gzip -k -d clash.gz 
    '';
    installPhase = ''
        runHook preInstall
        ${coreutils}/bin/mkdir -p $out/bin
        ${coreutils}/bin/install -m 0755 clash $out/bin/clash
        
        if [ "${system}" == "linux" ]; then
            patchelf \
                --set-interpreter "$(cat $NIX_CC/nix-support/dynamic-linker)" \
                $out/bin/clash
        fi
    '';

    meta = {
        description = "close-sourced pre-built Clash binary with TUN support and more";
        homepage = "https://github.com/Dreamacro/clash/releases/premium";
        platforms = [
            "x86_64-darwin"
            "aarch64-darwin"
            "x86_64-linux"
            "aarch64-linux"
        ];
    };
}