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

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  1. POHeroku is trying to install sqlite3 gem even it not being in the Gemfile
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    <p>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:</p> <blockquote> <p>-----> Installing dependencies using Bundler version 1.1.rc Running: bundle install --without development:test --path vendor/bundle --deployment Fetching gem metadata from <a href="http://rubygems.org/">http://rubygems.org/</a>....... (...)</p> <p>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 <a href="https://github.com/carlhuda/bundler/issues">https://github.com/carlhuda/bundler/issues</a> 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</p> </blockquote> <p>I've no idea why bundle install is trying to install sqlite3. Take a look at my Gemfile and Gemfile.lock:</p> <p>Gemfile</p> <pre><code>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', " ~&gt; 3.1.0" # gem 'coffee-rails', "~&gt; 3.1.0" gem 'uglifier' end gem 'jquery-rails' </code></pre> <p>Gemfile.lock</p> <pre><code>GEM remote: http://rubygems.org/ specs: actionmailer (3.1.0) actionpack (= 3.1.0) mail (~&gt; 2.3.0) actionpack (3.1.0) activemodel (= 3.1.0) activesupport (= 3.1.0) builder (~&gt; 3.0.0) erubis (~&gt; 2.7.0) i18n (~&gt; 0.6) rack (~&gt; 1.3.2) rack-cache (~&gt; 1.0.3) rack-mount (~&gt; 0.8.2) rack-test (~&gt; 0.6.1) sprockets (~&gt; 2.0.0) activemodel (3.1.0) activesupport (= 3.1.0) bcrypt-ruby (~&gt; 3.0.0) builder (~&gt; 3.0.0) i18n (~&gt; 0.6) activerecord (3.1.0) activemodel (= 3.1.0) activesupport (= 3.1.0) arel (~&gt; 2.2.1) tzinfo (~&gt; 0.3.29) activeresource (3.1.0) activemodel (= 3.1.0) activesupport (= 3.1.0) activesupport (3.1.0) multi_json (~&gt; 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 (~&gt; 1.0) hike (1.2.1) i18n (0.6.0) jquery-rails (1.0.14) railties (~&gt; 3.0) thor (~&gt; 0.14) json (1.6.1) mail (2.3.0) i18n (&gt;= 0.4.0) mime-types (~&gt; 1.16) treetop (~&gt; 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 (&gt;= 0.4) rack-mount (0.8.3) rack (&gt;= 1.0.0) rack-ssl (1.3.2) rack rack-test (0.6.1) rack (&gt;= 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 (~&gt; 1.0) railties (= 3.1.0) railties (3.1.0) actionpack (= 3.1.0) activesupport (= 3.1.0) rack-ssl (~&gt; 1.3.2) rake (&gt;= 0.8.7) rdoc (~&gt; 3.4) thor (~&gt; 0.14.6) rake (0.9.2) rdoc (3.9.4) sprockets (2.0.0) hike (~&gt; 1.2) rack (~&gt; 1.0) tilt (~&gt; 1.1, != 1.3.0) thin (1.2.11) daemons (&gt;= 1.0.9) eventmachine (&gt;= 0.12.6) rack (&gt;= 1.0.0) thor (0.14.6) tilt (1.3.3) treetop (1.4.10) polyglot polyglot (&gt;= 0.3.1) tzinfo (0.3.29) uglifier (1.0.3) execjs (&gt;= 0.3.0) multi_json (&gt;= 1.0.2) PLATFORMS ruby DEPENDENCIES jquery-rails json pg rails (= 3.1.0) thin uglifier </code></pre> <p>How can I fix it?</p>
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    1. COSo, the smart guy who voted down could explain why?
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    2. COI'm having this exact same problem, im using 'pg' locally with no problem but Heroku is still trying to install sqlite and therefore erroring. However, i can see that i have the following in my gemfile.lock: `sqlite3 (1.3.4) sqlite3-ruby (1.3.3) sqlite3 (>= 1.3.3)`. These are obviously what is causing the problem but i can't work out why they are still making their way into my gemfile.lock; no matter how many times i do `bundle update` or delete the lock file and start from scratch. Any suggestions?
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    3. COI have fixed mine by removing the `taps` gem from my Gemfile. Forgot i didn't need it in the actual Gemfile, just within my gemset in order to use it. Removing `taps` removed the sqlite dependancies in my Gemfile.lock.
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