Use no_checksum instead of a sha1 when getting latest version.

[jfsiii]

installation currently fails because of a SHA mismatch

> brew cask install mou
==> Downloading http://mouapp.com/download/Mou.zip
######################################################################## 100.0%
Error: SHA1 mismatch
Expected: e69bc2bbdadea6a2929032506085b6e9501a7fb9
Actual: 1276772fe649b2556257f6c0cf6e3ad5998fa35b

We've already dropped the explicit version. It seems to follow to drop the explicit SHA.

[vitorgalvao]

Since you’re already editing it, would you mind adding the link line, as it’ll be a requirement? You can also see some examples on how to do it.

[vitorgalvao]

Thank your for the changes. Merged.

[jfsiii]

This is a bit embarrassing but, how do I get brew cask install mou to respect this cask and not the one installed at ``brew --prefix/Cellar/brew-cask/0.10.0/Casks/mou.rb?

± ~/Sites/homebrew-cask [master @ 19b26b5] ✓ ‣ cat `brew --prefix`/Cellar/brew-cask/0.10.0/Casks/mou.rb
class Mou < Cask
  url 'http://mouapp.com/download/Mou.zip'
  version 'latest'
  homepage 'http://mouapp.com/'
  sha1 'e69bc2bbdadea6a2929032506085b6e9501a7fb9'
end
± ~/Sites/homebrew-cask [master @ 19b26b5] ✓ ‣ cat Casks/mou.rb
class Mou < Cask
  url 'http://mouapp.com/download/Mou.zip'
  version 'latest'
  homepage 'http://mouapp.com/'
  no_checksum
  link :app, 'Mou.app'
end

[passcod]

It doesn't use the one at .../Cellar/brew-cask/0.10.0/Casks/mou.rb, but rather the one at .../Taps/phinze-cask/Casks/mou.rb, which is updated with the normal flow: brew update.

[jfsiii]

Ah, thanks.

The issues seemed to be that

• I blindly followed the instructions in CONTRIBUTING.md
• CONTRIBUTING.md uses /usr/local instead of brew --prefix.

I switched to brew --prefix and everything went well:

± ~/Sites/homebrew-cask [master @ 19b26b5] ✗ ‣ brew cask install mou
==> Downloading http://mouapp.com/download/Mou.zip
Already downloaded: /Library/Caches/Homebrew/mou-latest.zip
caution: excluded filename not matched:  __MACOSX/*
==> Success! mou installed to /opt/homebrew-cask/Caskroom/mou/latest
==> Linking Mou.app to /Users/jschulz/Applications/Mou.app

I'll update CONTRIBUTING.md and send a PR.

[jfsiii]

To be fair, the issues I referenced above are the reason I had to send the PR without actually seeing the app actually install 😇

brew update did work. I had an issue which was preventing brew update from running properly. Once I fixed it, brew cask install mou worked as shown.