Heroku is trying to install sqlite3 gem even it not being in the Gemfile

I'm trying to deploy a Rails 3.1 application for the first time on Heroku. I set it to the Cedar stack, removed the sqlite3 gem but when I push the code to Heroku I get this error:

-----> Installing dependencies using Bundler version 1.1.rc Running: bundle install --without development:test --path vendor/bundle --deployment Fetching gem metadata from http://rubygems.org/....... (...)

Installing rails (3.1.0) Installing sqlite3 (1.3.4) with native extensions Unfortunately, a fatal error has occurred. Please report this error to the Bundler issue tracker at https://github.com/carlhuda/bundler/issues so that we can fix it. Thanks! /usr/local/lib/ruby/1.9.1/rubygems/installer.rb:483:in `rescue in block in build_extensions': ERROR: Failed to build gem native extension. (Gem::Installer::ExtensionBuildError) /usr/local/bin/ruby extconf.rb checking for sqlite3.h... no

I've no idea why bundle install is trying to install sqlite3. Take a look at my Gemfile and Gemfile.lock:

Gemfile

source 'http://rubygems.org'

gem 'rails', '3.1.0'

gem 'json'
gem 'pg'
gem 'thin'

# Gems used only for assets and not required
# in production environments by default.
group :assets do
#  gem 'sass-rails', "  ~> 3.1.0"
#  gem 'coffee-rails', "~> 3.1.0"
  gem 'uglifier'
end

gem 'jquery-rails'

Gemfile.lock

GEM   remote: http://rubygems.org/   specs:
    actionmailer (3.1.0)
      actionpack (= 3.1.0)
      mail (~> 2.3.0)
    actionpack (3.1.0)
      activemodel (= 3.1.0)
      activesupport (= 3.1.0)
      builder (~> 3.0.0)
      erubis (~> 2.7.0)
      i18n (~> 0.6)
      rack (~> 1.3.2)
      rack-cache (~> 1.0.3)
      rack-mount (~> 0.8.2)
      rack-test (~> 0.6.1)
      sprockets (~> 2.0.0)
    activemodel (3.1.0)
      activesupport (= 3.1.0)
      bcrypt-ruby (~> 3.0.0)
      builder (~> 3.0.0)
      i18n (~> 0.6)
    activerecord (3.1.0)
      activemodel (= 3.1.0)
      activesupport (= 3.1.0)
      arel (~> 2.2.1)
      tzinfo (~> 0.3.29)
    activeresource (3.1.0)
      activemodel (= 3.1.0)
      activesupport (= 3.1.0)
    activesupport (3.1.0)
      multi_json (~> 1.0)
    arel (2.2.1)
    bcrypt-ruby (3.0.1)
    builder (3.0.0)
    daemons (1.1.4)
    erubis (2.7.0)
    eventmachine (0.12.10)
    execjs (1.2.9)
      multi_json (~> 1.0)
    hike (1.2.1)
    i18n (0.6.0)
    jquery-rails (1.0.14)
      railties (~> 3.0)
      thor (~> 0.14)
    json (1.6.1)
    mail (2.3.0)
      i18n (>= 0.4.0)
      mime-types (~> 1.16)
      treetop (~> 1.4.8)
    mime-types (1.16)
    multi_json (1.0.3)
    pg (0.11.0)
    polyglot (0.3.2)
    rack (1.3.3)
    rack-cache (1.0.3)
      rack (>= 0.4)
    rack-mount (0.8.3)
      rack (>= 1.0.0)
    rack-ssl (1.3.2)
      rack
    rack-test (0.6.1)
      rack (>= 1.0)
    rails (3.1.0)
      actionmailer (= 3.1.0)
      actionpack (= 3.1.0)
      activerecord (= 3.1.0)
      activeresource (= 3.1.0)
      activesupport (= 3.1.0)
      bundler (~> 1.0)
      railties (= 3.1.0)
    railties (3.1.0)
      actionpack (= 3.1.0)
      activesupport (= 3.1.0)
      rack-ssl (~> 1.3.2)
      rake (>= 0.8.7)
      rdoc (~> 3.4)
      thor (~> 0.14.6)
    rake (0.9.2)
    rdoc (3.9.4)
    sprockets (2.0.0)
      hike (~> 1.2)
      rack (~> 1.0)
      tilt (~> 1.1, != 1.3.0)
    thin (1.2.11)
      daemons (>= 1.0.9)
      eventmachine (>= 0.12.6)
      rack (>= 1.0.0)
    thor (0.14.6)
    tilt (1.3.3)
    treetop (1.4.10)
      polyglot
      polyglot (>= 0.3.1)
    tzinfo (0.3.29)
    uglifier (1.0.3)
      execjs (>= 0.3.0)
      multi_json (>= 1.0.2)

PLATFORMS   ruby

DEPENDENCIES   jquery-rails   json   pg   rails (= 3.1.0)   thin   uglifier

How can I fix it?

When I ran into the problem, turns out I'd forgotten to commit my changes after bundle install. Doh! git status should indicate unstaged changes for the gem files.

I has the same problem and zoltarSpeaks' solution fixed it for me. I had the taps gem installed after reading this article that indicated it would be necessary for pushing from a local sqlite3 to production postgresql: http://batsov.com/articles/2011/10/30/deploying-rails31-apps-on-celadon-cedar/. Turned out I didn't need the taps gem after all, but it was clearly the problem. Removed the reference, bundle update, all systems go.

try deleting Gemfile.lock and run Bundle Install, commit and push

Simple solution without uninstalling sqlite3 gem for Heroku:

Add to Gemfile:

group :production do
gem 'pg', '0.17.1' #or version of pg you want
gem 'rails_12factor', '0.0.2' #Heroku static assets for image and css

Check, that you have:

end 
end

at the end of code in Gemfile

than Save Gemfile and run bundle install

$ bundle install --without production

than commit

$ git commit -a -m "Update Gemfile.lock for Heroku"

than

$ git push heroku master

That is all. You will get only a few warnings which is simply to fix.

来源：https://stackoverflow.com/questions/7786509/heroku-is-trying-to-install-sqlite3-gem-even-it-not-being-in-the-gemfile

标签

sqlite

heroku

ruby-on-rails-3.1

bundler