gistfile1.txt

Installing json 1.8.6 with native extensions
Gem::Ext::BuildError: ERROR: Failed to build gem native extension.

    current directory: /Users/loaner/.gem/ruby/2.3.0/gems/json-1.8.6/ext/json/ext/generator
/nix/store/5svvwcf445rfb2irn0n64lwi89wa1q41-ruby-2.3.8/bin/ruby -r ./siteconf20190103-4946-1x2rtzy.rb extconf.rb
creating Makefile

current directory: /Users/loaner/.gem/ruby/2.3.0/gems/json-1.8.6/ext/json/ext/generator
make "DESTDIR=" clean

current directory: /Users/loaner/.gem/ruby/2.3.0/gems/json-1.8.6/ext/json/ext/generator
make "DESTDIR="
compiling generator.c
In file included from generator.c:1:
In file included from ./../fbuffer/fbuffer.h:5:
In file included from /nix/store/5svvwcf445rfb2irn0n64lwi89wa1q41-ruby-2.3.8/include/ruby-2.3.0/ruby.h:33:
In file included from /nix/store/5svvwcf445rfb2irn0n64lwi89wa1q41-ruby-2.3.8/include/ruby-2.3.0/ruby/ruby.h:36:
/nix/store/5svvwcf445rfb2irn0n64lwi89wa1q41-ruby-2.3.8/include/ruby-2.3.0/ruby/defines.h:26:10: fatal error: 'stdio.h' file not found
#include <stdio.h>
         ^~~~~~~~~
1 error generated.
make: *** [Makefile:239: generator.o] Error 1

make failed, exit code 2

Gem files will remain installed in /Users/loaner/.gem/ruby/2.3.0/gems/json-1.8.6 for inspection.
Results logged to /Users/loaner/.gem/ruby/2.3.0/extensions/x86_64-darwin-17/2.3.0/json-1.8.6/gem_make.out

An error occurred while installing json (1.8.6), and Bundler cannot continue.
Make sure that `gem install json -v '1.8.6' --source 'https://rubygems.org/'` succeeds before bundling.

In Gemfile:
  activeadmin was resolved to 1.0.0.pre1, which depends on
    rails was resolved to 4.2.7.1, which depends on
      actionmailer was resolved to 4.2.7.1, which depends on
        actionpack was resolved to 4.2.7.1, which depends on
          actionview was resolved to 4.2.7.1, which depends on
            rails-dom-testing was resolved to 1.0.9, which depends on
              rails-deprecated_sanitizer was resolved to 1.0.3, which depends on
                activesupport was resolved to 4.2.7.1, which depends on
                  json

shell.nix

# This allows overriding nixpkgs by passing `--arg pkgs ...`
{ pkgs ? import ./devtools/lib/nix/nixpkgs.nix {}
, lib ? pkgs.lib
}:

with pkgs;
with lib;

let

  ruby = ruby_2_3;

in gccStdenv.mkDerivation {
  name = "keeptruckin-development-environment";
  buildInputs = [
    # The ruby environment
    ruby.devEnv

    # Gem dependencies
    libxml2        # dependency of the nokogiri Gem
    postgresql     # dependency of the pg Gem
    sqlite         # dependency of the sqlite3 Gem

    openssl
  ] ++ optional stdenv.isDarwin [
    docker-machine
  ] ++ optional stdenv.isLinux [
    # TODO: make wkhtmltopdf compatible with Mac!
    wkhtmltopdf
  ];

  phases = ["nobuildPhase"];

  nobuildPhase = ''
    echo
    echo "This derivation is not meant to be built, aborting";
    echo
    exit 1
  '';
}