pc: 1.2.0 -> 1.6.0

Also import rebar3 port compiler independently of hex-packages.nix.

pkgs/development/beam-modules/default.nix

@@ -20,6 +20,8 @@ let
         inherit callPackage erlang;
         beamPackages = self;
 
+        hexRegistrySnapshot = callPackage ./hex-registry-snapshot.nix { };
+
         rebar = callPackage ../tools/build-managers/rebar { };
         rebar3-open = callPackage ../tools/build-managers/rebar3 {
           hermeticRebar3 = false;
@@ -28,7 +30,10 @@ let
           hermeticRebar3 = true;
         };
 
-        hexRegistrySnapshot = callPackage ./hex-registry-snapshot.nix { };
+        # rebar3 port compiler plugin is required by buildRebar3
+        pc_1_6_0 = callPackage ./pc {};
+        pc = pc_1_6_0;
+
         fetchHex = callPackage ./fetch-hex.nix { };
 
         buildRebar3 = callPackage ./build-rebar3.nix {};
@@ -57,12 +62,16 @@ let
         lfe = lfe_1_2;
         lfe_1_2 = lib.callLFE ../interpreters/lfe/1.2.nix { inherit erlang buildRebar3 buildHex; };
 
-        # Non hex packages
+        # Non hex packages. Examples how to build Rebar/Mix packages with and
+        # without helper functions buildRebar3 and buildMix.
         hex = callPackage ./hex {};
         webdriver = callPackage ./webdriver {};
+        relxExe = callPackage ../tools/erlang/relx-exe {};
 
+        # The tool used to upgrade hex-packages.nix.
         hex2nix = callPackage ../tools/erlang/hex2nix {};
+
+        # An example of Erlang/C++ package.
         cuter = callPackage ../tools/erlang/cuter {};
-        relxExe = callPackage ../tools/erlang/relx-exe {};
       };
 in makeExtensible packages

pkgs/development/beam-modules/pc/default.nix

@@ -0,0 +1,13 @@
+{ stdenv, buildHex }:
+
+buildHex {
+  name = "pc";
+  version = "1.6.0";
+  sha256 = "0xq411ig5ny3iilkkkqa4vm3w3dgjc9cfzkqwk8pm13dw9mcm8h0";
+
+  meta = {
+    description = ''a rebar3 port compiler for native code'';
+    license = stdenv.lib.licenses.mit;
+    homepage = "https://github.com/blt/port_compiler";
+  };
+}