anchor.diff:      ] ++ lib.optional withSqlite "--with-sqlite3=${sqlite}";
   
     depsPaths = map (x: builtins.getAttr x ejdeps) depsNames;
  +  depsRevs = map (x: x.rev) depsPaths;
   
     enableParallelBuilding = true;
   
  
positive.code:   ctlpath = lib.makeSearchPath "bin" [ bash gnused gnugrep coreutils utillinux procps ];
  
    fakegit = writeScriptBin "git" ''
      #! ${stdenv.shell}
      exit 0
    '';
  
    # These can be extracted from `rebar.config.script`
    # Some dependencies are from another packages. Try commenting them out; then during build
    # you'll get necessary revision information.
    ejdeps = {
      p1_cache_tab = fetchFromGitHub {
        owner = "processone";
        repo = "cache_tab";
        rev = "f7ea12b0ba962a3d2f9a406d2954cf7de4e27230";
        sha256 = "043rz66s6vhcbk02qjhn1r8jv8yyy4gk0gsknmk7ya6wq2v1farw";
      };
      p1_tls = fetchFromGitHub {
        owner = "processone";
        repo = "tls";
        rev = "e56321afd974e9da33da913cd31beebc8e73e75f";
        sha256 = "0k8dx8mww2ilr4y5m2llhqh673l0z7r73f0lh7klyf57wfqy7hzk";
      };
      p1_stringprep = fetchFromGitHub {
        owner = "processone";
        repo = "stringprep";
        rev = "3c640237a3a7831dc39de6a6d329d3a9af25c579";
        sha256 = "0mwlkivkfj16bdv80jr8kqa0vcqglxkq90m9qn0m6zp4bjc3jm3n";
      };
      p1_xml = fetchFromGitHub {
        owner = "processone";
        repo = "xml";
        rev = "1c8b016b0ac7986efb823baf1682a43565449e65";
        sha256 = "192jhj0cwwypbiass3rm2449410pqyk3mgrdg7yyvqwmjzzkmh87";
      };
      esip = fetchFromGitHub {
        owner = "processone";
        repo = "p1_sip";
        rev = "d662d3fe7f6288b444ea321d854de0bd6d40e022";
        sha256 = "1mwzkkv01vr9n13h6h3100jrrlgb683ncq9jymnbxqxk6rn7xjd1";
      };
      p1_stun = fetchFromGitHub {
        owner = "processone";
        repo = "stun";
        rev = "061bdae484268cbf0457ad4797e74b8516df3ad1";
        sha256 = "0zaw8yq4sk7x4ybibcq93k9b6rb7fn03i0k8gb2dnlipmbcdd8cf";
      };
      p1_yaml = fetchFromGitHub {
        owner = "processone";
        repo = "p1_yaml";
        rev = "79f756ba73a235c4d3836ec07b5f7f2b55f49638";
        sha256 = "05jjw02ay8v34izwgi5zizqp1mj68ypjilxn59c262xj7c169pzh";
      };
      p1_utils = fetchFromGitHub {
        owner = "processone";
        repo = "p1_utils";
        rev = "d7800881e6702723ce58b7646b60c9e4cd25d563";
        sha256 = "07p47ccrdjymjmn6rn9jlcyg515bs9l0iwfbc75qsk10ddnmbvdi";
      };
      jiffy = fetchFromGitHub {
        owner = "davisp";
        repo = "jiffy";
        rev = "cfc61a2e952dc3182e0f9b1473467563699992e2";
        sha256 = "1c2x71x90jlx4585znxz8fg46q3jxm80nk7v184lf4pqa1snk8kk";
      };
      oauth2 = fetchFromGitHub {
        owner = "prefiks";
        repo = "oauth2";
        rev = "e6da9912e5d8f658e7e868f41a102d085bdbef59";
        sha256 = "0di33bkj8xc7h17z1fs4birp8a88c1ds72jc4xz2qmz8kh7q9m3k";
      };
      xmlrpc = fetchFromGitHub {
        owner = "rds13";
        repo = "xmlrpc";
        rev = "42e6e96a0fe7106830274feed915125feb1056f3";
        sha256 = "10dk480s6z653lr5sap4rcx3zsfmg68hgapvc4jvcyf7vgg12d3s";
      };
  
      p1_mysql = fetchFromGitHub {
        owner = "processone";
        repo = "mysql";
        rev = "dfa87da95f8fdb92e270741c2a53f796b682f918";
        sha256 = "1nw7n1xvid4yqp57s94drdjf6ffap8zpy8hkrz9yffzkhk9biz5y";
      };
      p1_pgsql = fetchFromGitHub {
        owner = "processone";
        repo = "pgsql";
        rev = "e72c03c60bfcb56bbb5d259342021d9cb3581dac";
        sha256 = "0y89995h7g8bi12qi1m4cdzcswsljbv7y8zb43rjg5ss2bcq7kb6";
      };
      sqlite3 = fetchFromGitHub {
        owner = "alexeyr";
        repo = "erlang-sqlite3";
        rev = "8350dc603804c503f99c92bfd2eab1dd6885758e";
        sha256 = "0d0pbqmi3hsvzjp4vjp7a6bq3pjvkfv0spszh6485x9cmxsbwfpc";
      };
      p1_pam = fetchFromGitHub {
        owner = "processone";
        repo = "epam";
        rev = "d3ce290b7da75d780a03e86e7a8198a80e9826a6";
        sha256 = "0s0czrgjvc1nw7j66x8b9rlajcap0yfnv6zqd4gs76ky6096qpb0";
      };
      p1_zlib = fetchFromGitHub {
        owner = "processone";
        repo = "zlib";
        rev = "e3d4222b7aae616d7ef2e7e2fa0bbf451516c602";
        sha256 = "0z960nwva8x4lw1k91i53kpn2bjbf1v1amslkyp8sx2gc5zf0gbn";
      };
      riakc = fetchFromGitHub {
        owner = "basho";
        repo = "riak-erlang-client";
        rev = "1.4.2";
        sha256 = "128jz83n1990m9c2fzwsif6hyapmq46720nzfyyb4z2j75vn85zz";
      };
      # dependency of riakc
      riak_pb = fetchFromGitHub {
        owner = "basho";
        repo = "riak_pb";
        rev = "1.4.4.0";
        sha256 = "054fg9gaxk4n0id0qs6k8i919qvxsvmh76m6fgfbmixyfxh5jp3w";
      };
      # dependency of riak_pb
      protobuffs = fetchFromGitHub {
        owner = "basho";
        repo = "erlang_protobuffs";
        rev = "0.8.1p1";
        sha256 = "1x75a26y1gx6pzr829i4sx2mxm5w40kb6hfd5y511him56jcczna";
      };
      rebar_elixir_plugin = fetchFromGitHub {
        owner = "yrashk";
        repo = "rebar_elixir_plugin";
        rev = "7058379b7c7e017555647f6b9cecfd87cd50f884";
        sha256 = "1s5bvbrhal866gbp72lgp0jzphs2cmgmafmka0pylwj30im41c71";
      };
      elixir = fetchFromGitHub {
        owner = "elixir-lang";
        repo = "elixir";
        rev = "1d9548fd285d243721b7eba71912bde2ffd1f6c3";
        sha256 = "1lxn9ly73rm797p6slfx7grsq32nn6bz15qhkbra834rj01fqzh8";
      };
      p1_iconv = fetchFromGitHub {
        owner = "processone";
        repo = "eiconv";
        rev = "8b7542b1aaf0a851f335e464956956985af6d9a2";
        sha256 = "1w3k41fpynqylc2vnirz0fymlidpz0nnym0070f1f1s3pd6g5906";
      };
      lager = fetchFromGitHub {
        owner = "basho";
        repo = "lager";
        rev = "4d2ec8c701e1fa2d386f92f2b83b23faf8608ac3";
        sha256 = "03aav3cid0qpl1n8dn83hk0p70rw05nqvhq1abdh219nrlk9gfmx";
      };
      # dependency of lager
      goldrush = fetchFromGitHub {
  
negative.code:     mkdir deps
      depsPathsA=( $depsPaths )
      depsNamesA=( $depsNames )
      depsRevsA=( $depsRevs )
      for i in {0..${toString (builtins.length depsNames - 1)}}; do
        path="deps/''${depsNamesA[$i]}"
        cp -R ''${depsPathsA[$i]} "$path"
        chmod -R +w "$path"
        echo "''${depsRevsA[$i]}" > "$path/.rev"
      done
      touch deps/.got
      patchShebangs .
  
      for i in deps/*; do
        [ -x "$i/configure" ] && ( cd "$i"; ./configure ) || true
      done
    '';
  
    postInstall = ''
  