buildGoPackage: deps.json -> deps.nix in NIXON

https://github.com/NixOS/nixpkgs/pull/17254#issuecomment-245295541

* update docs to describe `deps.nix`
* include goDeps in nix-shell GOPATH
* NixOS 16.09 rel notes about replacing goPackages

pkgs/development/tools/go2nix/default.nix

@@ -3,7 +3,7 @@
 
 buildGoPackage rec {
   name = "go2nix-${version}";
-  version = "0.1.0";
+  version = "1.1.0";
   rev = "v${version}";
 
   goPackagePath = "github.com/kamilchm/go2nix";
@@ -12,10 +12,10 @@ buildGoPackage rec {
     inherit rev;
     owner = "kamilchm";
     repo = "go2nix";
-    sha256 = "10nz7gva3n6wk01wphrjjb31sy33kf9ji03zr849x21a669fnmjf";
+    sha256 = "0asbbcyf1hh8khakych0y09rjarjiywr8pyy1v8ghpr1vvg43a09";
   };
 
-  goDeps = ./deps.json;
+  goDeps = ./deps.nix;
 
   buildInputs = [ go-bindata goimports makeWrapper ];
   preBuild = ''go generate ./...'';

pkgs/development/tools/go2nix/deps.json

@@ -1,20 +0,0 @@
-[
-    {
-        "goPackagePath": "github.com/Masterminds/vcs",
-        "fetch": {
-            "type": "git",
-            "url": "https://github.com/Masterminds/vcs",
-            "rev": "7af28b64c5ec41b1558f5514fd938379822c237c",
-            "sha256": "127pamr5lkym3iq6z747bm4y4gyc02glrqb61yv82z1rdyv1dcf6"
-        }
-    },
-    {
-        "goPackagePath": "github.com/jawher/mow.cli",
-        "fetch": {
-            "type": "git",
-            "url": "https://github.com/jawher/mow.cli",
-            "rev": "772320464101e904cd51198160eb4d489be9cc49",
-            "sha256": "1a8hnh2k3vc3prjhnz4rjbiwhqq6r3mi18h9cdb6fc6s6yzjc19j"
-        }
-    }
-]

pkgs/development/tools/go2nix/deps.nix

@@ -0,0 +1,20 @@
+[
+    {
+        goPackagePath = "github.com/Masterminds/vcs";
+        fetch = {
+            type = "git";
+            url = "https://github.com/Masterminds/vcs";
+            rev = "7af28b64c5ec41b1558f5514fd938379822c237c";
+            sha256 = "127pamr5lkym3iq6z747bm4y4gyc02glrqb61yv82z1rdyv1dcf6";
+        };
+    }
+    {
+        goPackagePath = "github.com/jawher/mow.cli";
+        fetch = {
+            type = "git";
+            url = "https://github.com/jawher/mow.cli";
+            rev = "772320464101e904cd51198160eb4d489be9cc49";
+            sha256 = "1a8hnh2k3vc3prjhnz4rjbiwhqq6r3mi18h9cdb6fc6s6yzjc19j";
+        };
+    }
+]