erlang support: Add 187 packages pulled from Hex

This commit adds 187 packages from Hex.pm and documents 100 more that
could not be imported for various reasons. The packages where generated
by hex2nix.

pkgs/development/erlang-modules/build-rebar3.nix

@@ -1,5 +1,5 @@
 { stdenv, writeText, erlang, rebar3, openssl, libyaml, fetchHex, fetchFromGitHub,
-  rebar3-pc, buildEnv }:
+  pc, buildEnv }:
 
 { name, version
 , src
@@ -13,7 +13,7 @@
 with stdenv.lib;
 
 let
-  plugins = pluginDeps ++ (if compilePorts then [rebar3-pc] else []);
+  plugins = pluginDeps ++ (if compilePorts then [pc] else []);
 
 
   shell = drv: stdenv.mkDerivation {

pkgs/development/erlang-modules/default.nix

@@ -1,8 +1,8 @@
-{ pkgs }: #? import <nixpkgs> {} }:
+{ stdenv, pkgs }: #? import <nixpkgs> {} }:
 
 let
   self = rec {
-    hex = import ./hex-packages.nix { callPackage = self.callPackage; };
+    hex = import ./hex-packages.nix { stdenv = stdenv; callPackage = self.callPackage; };
     callPackage = pkgs.lib.callPackageWith (pkgs // self // hex);
 
     buildRebar3 = callPackage ./build-rebar3.nix {};