Heroku Removing Gemfile.lock because it was generated on Windows

Question

Does anyone have any idea about this one? Trying to deploy to heroku. I am able to do a successful launch to heroku but I suspect this warning is probably the reason I get the sorry something went wrong message. Any input on this would be appreciated. By the way I am thinking this is a Windows issue. To be honest this is my first crack at this and it's been interesting so far but if this is the nonsense I am going to deal with trying to develop on Windows I might as well get cracking on setting up a linux machine. I know there will be complications as well but who knows. I have installed and used it before but never for development. Any thoughts? Thanks! Ruby 2.0.0 Rails 4.0.0 Windows 7 64 WARNINGS: Removing `Gemfile.lock` because it was generated on Windows. Bundler will do a full resolve so native gems are handled properly. This may result in unexpected gem versions being used in your app. Just for reference here is the whole push to heroku: ``` c:\dev\project2>git push heroku maste…

Accepted Answer

your `Gemfile.lock` file likely contains

```
PLATFORMS
  ruby
  x86-mingw32
```

You need to remove

```
  x86-mingw32
```

for it to play nicely with heroku. There may be lines in your `Gemfile.lock` that conflict with removing that, e.g. you might have installed a separate version of the `mysql2` gem for windows.

```
mysql2 (0.3.11-x86-mingw32)
mysql2 (0.3.14)
```

you will likely need to remove the line that references the windows-only version of the gem. And for that to work, you may need to remove the line in your `Gemfile` that causes bundler to install that gem.

Heroku Removing Gemfile.lock because it was generated on Windows

Solution

Problem