{ self, system, pkgs }: let
  rust = {
    nativeBuildInputs = [
      pkgs.pkgsBuildHost.rust-bin.stable."1.81.0".default
      pkgs.pkg-config
    ];
    commonArgs = {
      inherit (self.lib) cargoToml;
      inherit (rust) nativeBuildInputs;
    };
  };
  buildPostgresqlExtension =
    pkgs: pkgs.callPackage (import (builtins.path {
      name = "extension-builder";
      path = ./buildPostgresqlExtension.nix;
    }));
  buildHemarExt = pkgs: versionSuffix: let
      postgresql = pkgs."postgresql_${versionSuffix}";
      c-hectic = self.packages.${pkgs.system}.c-hectic;
  in buildPostgresqlExtension pkgs {
      stdenv = pkgs.clangStdenv;
      inherit postgresql;
    } {
      pname = "hemar";
      version = "0.1";
      src = ./c/hemar;
      nativeBuildInputs = (with pkgs; [pkg-config]) ++ [ c-hectic ];
      dontShrinkRPath = true;
      postFixup = ''
        echo ">>> postFixup running..."
        ${pkgs.patchelf}/bin/patchelf --set-rpath ${c-hectic}/lib $out/lib/hemar.so
      '';
      preInstall = ''mkdir $out'';
    };
  buildPgrxExtension = pkgs: 
    pkgs.callPackage (import (builtins.path {
      name = "extension-builder";
      path = ./buildPgrxExtension.nix;
    })) { 
      cargo-pgrx = pkgs.cargo-pgrx_0_12_6;
      inherit (pkgs.darwin.apple_sdk.frameworks) Security;
    };

  buildSmtpExt = pkgs: versionSuffix: let
    postgresql = pkgs."postgresql_${versionSuffix}";
    src = pkgs.fetchFromGitHub {
      owner = "brianpursley";
      repo = "pg_smtp_client";
      rev = "6ff3b71e3705e0d4081a51c21ca0379e869ba5fb";
      hash = "sha256-wC/2rAsSDO83UITaFhtaf3do3aaOAko4gnKUOzwURc8=";
    };
    cargo = self.lib.cargoToml src;
  in
    buildPgrxExtension pkgs {
      pname = cargo.package.name;
      version = cargo.package.version;
  
      inherit src postgresql;
  
      buildInputs = with pkgs; [ openssl ];

      cargoHash = "sha256-Cg5qY4TKkSJRSAtlFbjIRhea0dXPLEyasi5n09HcYeo=";
  
      doCheck = false;
    };
  buildPlShExt = pkgs: versionSuffix: let
      version = "4.0"; 
    in buildPostgresqlExtension pkgs {
      stdenv = pkgs.clangStdenv;
      postgresql = pkgs."postgresql_${versionSuffix}";
    } {
      pname = "plsh";
      inherit version;
      src = pkgs.fetchFromGitHub {
        owner = "petere";
        repo = "plsh";
        rev = "d88079617309974f71b3f8e4d5f96869dba66835";
        hash = "sha256-H9B5L+yIjjVNhnuF+bIZKyCrOqfIvu5W26aqyqL5UdQ=";
      };
      nativeBuildInputs = with pkgs; [ pkg-config ];
    };
  buildPlHaskellExt = pkgs: versionSuffix: let
      version = "4.0"; 
    in buildPostgresqlExtension pkgs {
      stdenv = pkgs.clangStdenv;
      postgresql = pkgs."postgresql_${versionSuffix}";
    } {
      pname = "plhaskell";
      inherit version;
      src = pkgs.fetchFromGitHub {
        owner = "ed-o-saurus";
        repo = "PLHaskell";
        rev = "d917f0991a455cf0558c2036e360ba1a9b40a8ef";
        hash = "sha256-+sJmR/SCMfxxExa7GZuNmWez1dfhvlM9qOdO9gHNf74=";
      };
      preBuild = ''
        last=$(pwd)
        cd ${pkgs.haskellPackages.ghc}
        include=$(dirname "${pkgs.haskellPackages.ghc}/$(find . -name HsFFI.h)")
        ls $include
        cd $last
        export NIX_CFLAGS_COMPILE="$NIX_CFLAGS_COMPILE -I$include"
      '';
      nativeBuildInputs = with pkgs; [
        pkg-config
        curl
        ghc
        haskellPackages.hsc2hs
        haskellPackages.ghc 
      ];
    };
  buildHttpExt = pkgs: versionSuffix: let
      version = "1.6.1";
    in buildPostgresqlExtension pkgs {
      stdenv = pkgs.clangStdenv;
      postgresql = pkgs."postgresql_${versionSuffix}";
    } {
      pname = "http";
      inherit version;
      src = pkgs.fetchFromGitHub {
        owner = "pramsey";
        repo = "pgsql-http";
        rev = "v${version}";
        hash = "sha256-C8eqi0q1dnshUAZjIsZFwa5FTYc7vmATF3vv2CReWPM=";
    };
    nativeBuildInputs = with pkgs; [pkg-config curl];
  };
in {
  py3-datetime = pkgs.python3Packages.buildPythonPackage rec {
    pname = "DateTime";
    version = "5.5";
    
    src = pkgs.fetchPypi {
      inherit pname version;
      sha256 = "sha256-IexjMfh6f8tXvXxZ6KaL//5vy/Ws27x7NW1qmgIBkdM=";
    };
  };
  py3-marzban = pkgs.python3Packages.buildPythonPackage rec {
    pname = "marzban";
    version = "0.4.3";
    
    src = pkgs.fetchPypi {
      inherit pname version;
      sha256 = "sha256-z71Wl4AuET3oES7/48u+paL9F12SdrkohcEee/tkWVk=";
    };

    format = "pyproject";
    
    propagatedBuildInputs = with pkgs.python3Packages; [
      httpx
      paramiko
      sshtunnel
    ];
    nativeBuildInputs = (with pkgs.python3Packages; [
      setuptools
      wheel
      setuptools-scm
      httpx
      pydantic
      paramiko
      sshtunnel
    ]) ++ (with self.packages.${system}; [
      py3-datetime
    ]);

    doCheck = false;
  };
  py3-asyncpayments = pkgs.python3Packages.buildPythonPackage rec {
    pname = "asyncpayments";
    version = "1.4.6";
    
    src = pkgs.fetchPypi {
      inherit pname version;
      sha256 = "sha256-t7AZiRb7DHZgJHPNQwAEuc0mrTQ14+82d19VomTjs8U=";
    };

    format = "pyproject";
    
    nativeBuildInputs = with pkgs.python3Packages; [ setuptools wheel setuptools-scm ];
    propagatedBuildInputs = with pkgs.python3Packages; [ aiohttp requests ];
    
    doCheck = false;
  };
  py3-payok = pkgs.python3Packages.buildPythonPackage rec {
    pname = "payok";
    version = "1.2";
    
    src = pkgs.fetchPypi {
      inherit pname version;
      sha256 = "sha256-UN+MSNGhrPpw7hZRLAx8XY3jC0ldo+DlbaSJ64wWBHo=";
    };
    
    propagatedBuildInputs = with pkgs.python3Packages; [ requests ];
    
    doCheck = false;
  };
  py3-asyncio = pkgs.python3Packages.buildPythonPackage rec {
    pname = "asyncio";
    version = "3.4.3";
    src = pkgs.python3Packages.fetchPypi {
      inherit pname version;
      sha256 = "sha256-gzYP+LyXmA5P8lyWTHvTkj0zPRd6pPf7c2sBnybHy0E=";
    };
  };
  py3-cryptomus = pkgs.python3Packages.buildPythonPackage rec {
    pname = "cryptomus";
    version = "1.1";
    src = pkgs.python3Packages.fetchPypi {
      inherit pname version;
      sha256 = "sha256-f0BBGfemKxMdz+LMvawWqqRfmF+TrCpMwgtJEYt+fgU=";
    };
  };
  py3-modulegraph = pkgs.python3Packages.buildPythonPackage rec {
    pname = "modulegraph";
    version = "0.19.6";
    src = pkgs.python3Packages.fetchPypi {
      inherit pname version;
      sha256 = "sha256-yRTIyVoOEP6IUF1OnCKEtOPbxwlD4wbMZWfjbMVBv0s=";
    };
  };
  py3-swifter = pkgs.python3Packages.buildPythonPackage rec {
    pname = "swifter";
    version = "1.4.0";
    src = pkgs.python3Packages.fetchPypi {
      inherit pname version;
      sha256 = "sha256-4bt0R2ohs/B6F6oYyX/cuoWZcmvRfacy8J2rzFDia6A=";
    };
  };
  py3-aiogram-newsletter = pkgs.python3Packages.buildPythonPackage rec {
    pname = "aiogram-newsletter";
    version = "0.0.10";

    src = pkgs.fetchFromGitHub {
      inherit pname version;
      owner = "nessshon";
      repo = "aiogram-newsletter";
      rev = "bb8a42e4bcff66a9a606fc92ccc27b1d094b20fc";
      sha256 = "sha256-atKhccp8Pr8anJUo+M9hnYkYrcgnB9SxrpmsiVusJZs=";
    };
  };
  nvim-alias = pkgs.callPackage ./nvim-alias.nix {};
  bolt-unpack = pkgs.callPackage ./bolt-unpack.nix {};
  nvim-pager = pkgs.callPackage ./nvim-pager.nix {};
  printobstacle = pkgs.callPackage ./printobstacle.nix {};
  printprogress = pkgs.callPackage ./printprogress.nix {};
  colorize = pkgs.callPackage ./colorize.nix {};
  github-gh-tl = pkgs.callPackage ./github/gh-tl.nix {};
  supabase-with-env-collection = pkgs.callPackage ./supabase-with-env-collection.nix {};
  migration-name = pkgs.callPackage ./migration-name.nix {};
  prettify-log = pkgs.callPackage ./prettify-log/default.nix rust.commonArgs;
  pg-from = pkgs.callPackage ./postgres/pg-from/default.nix rust.commonArgs;
  pg-schema = pkgs.callPackage ./postgres/pg-schema/default.nix rust.commonArgs;
  pg_wdumpall = pkgs.callPackage ./postgres/pg_wdumpall.nix rust.commonArgs; 
  pg_wdump = pkgs.callPackage ./postgres/pg_wdump.nix rust.commonArgs; 
  pg-migration = pkgs.callPackage ./postgres/pg-migration/default.nix rust.commonArgs;
  pg-17-ext-hemar = buildHemarExt pkgs "17";
  pg-17-ext-http = buildHttpExt pkgs "17";
  pg-17-ext-smtp-client = buildSmtpExt pkgs "17";
  pg-17-ext-plhaskell = buildPlHaskellExt pkgs "17";
  pg-17-ext-plsh = buildPlShExt pkgs "17";
  pg-16-ext-hemar = buildHemarExt pkgs "16";
  pg-16-ext-http = buildHttpExt pkgs "16";
  pg-16-ext-smtp-client = buildSmtpExt pkgs "16";
  pg-16-ext-plhaskell = buildPlHaskellExt pkgs "16";
  pg-16-ext-plsh = buildPlShExt pkgs "16";
  pg-15-ext-hemar = buildHemarExt pkgs "15";
  pg-15-ext-http = buildHttpExt pkgs "15";
  pg-15-ext-smtp-client = buildSmtpExt pkgs "15";
  pg-15-ext-plhaskell = buildPlHaskellExt pkgs "15";
  pg-15-ext-plsh = buildPlShExt pkgs "15";
  slpt = pkgs.callPackage ./slpt.nix {};
  c-hectic = pkgs.callPackage ./c/hectic/default.nix {};
  watch = pkgs.callPackage ./c/watch/default.nix {};
  support-bot = pkgs.callPackage ./support-bot {};
  nix-derivation-hash = pkgs.callPackage ./nix-derivation-hash {};
}