Why does bundle ignore "gem 'pg'"?

Question

Currently Working

Not sure what happened. Built gemfile.lock on a linux box and moved it over. Had missing things, ran bundle install, worked.

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Bundle is ignoring my inclusion of the "pg" gem in my Gemfile. Installing pg through gem install pg works fine, and it shows up when I use gem list --local.

Gemfile:

source 'http://rubygems.org'

gem 'rails' 
gem 'pg'

bundle install (no pg):

Using rake (10.0.4)
Using i18n (0.6.1)
Using multi_json (1.7.2)
Using activesupport (3.2.13)
Using builder (3.0.4)
Using activemodel (3.2.13)
Using erubis (2.7.0)
Using journey (1.0.4)
Using rack (1.4.5)
Using rack-cache (1.2)
Using rack-test (0.6.2)
Using hike (1.2.2)
Using tilt (1.3.7)
Using sprockets (2.2.2)
Using actionpack (3.2.13)
Using mime-types (1.23)
Using polyglot (0.3.3)
Using treetop (1.4.12)
Using mail (2.5.3)
Using actionmailer (3.2.13)
Using arel (3.0.2)
Using tzinfo (0.3.37)
Using activerecord (3.2.13)
Using activeresource (3.2.13)
Using json (1.7.7)
Using rack-ssl (1.3.3)
Using bundler (1.3.5)
Using rdoc (3.12.2)
Using thor (0.18.1)
Using railties (3.2.13)
Using rails (3.2.13)
Your bundle is complete!
Use `bundle show [gemname]` to see where a bundled gem is installed.

bundle show pg:

Could not find gem 'pg'.
Did you mean pg?

gem list --local (pg exists):

*** LOCAL GEMS ***

actionmailer (3.2.13)
actionpack (3.2.13)
activemodel (3.2.13, 3.1.11)
activerecord (3.2.13)    
activeresource (3.2.13)
activesupport (3.2.13, 3.1.11)
arel (3.0.2)
bigdecimal (1.2.0)
builder (3.0.4)
bundler (1.3.5)
erubis (2.7.0)
hike (1.2.2)
i18n (0.6.4, 0.6.1)
io-console (0.4.2)
journey (1.0.4)
json (1.7.7)
mail (2.5.3)
mime-types (1.23)
minitest (4.3.2)
multi_json (1.7.2)
pg (0.15.1 x64-mingw32)
polyglot (0.3.3)
psych (2.0.0)
rack (1.4.5, 1.3.10)
rack-cache (1.2)
rack-mount (0.8.3)
rack-ssl (1.3.3)
rack-test (0.6.2)
rails (3.2.13)
railties (3.2.13)
rake (10.0.4, 0.9.6)
rdoc (4.0.0, 3.12.2)
rubygems-update (2.0.3)
sprockets (2.2.2, 2.0.4)
test-unit (2.0.0.0)
thor (0.18.1)
tilt (1.3.7)
treetop (1.4.12)
tzinfo (0.3.37)

Also, if I try to run rails s, rake db:create, etc., I get:

rake aborted!
Please install the postgresql adapter: `gem install activerecord-postgresql-adap
ter` (pg is not part of the bundle. Add it to Gemfile.)

Tasks: TOP => db:create
(See full trace by running task with --trace)

Using:

Windows 7, 64-bit
Rails 3.2.13
ruby 2.0.0p0 (2013-02-24) [x64-mingw32]
Bundler version 1.3.5

Solution 1

Try deleting your "gemfile.lock" and then re-running bundle install?

Solution 2

Try to remove Gemfile.lock and run bundle check to see if the dependencies listed in Gemfile are satisfied by currently installed gems.