Make OS X package 2x smaller

[rhysd]

I found that OS X package had lost its symbolic links.

So I added --symlinks option to zip command. It preserves symbolic link in an archive.

• Before

- After

Now darwin package gets 2x smaller 😄

[rhysd]

Currently, size of Nocturn.app being archived in zip is 380 MB+. But after this PR merged, it will be reduced to 160MB.

[rhysd]

One more thing.

I noticed that packages include devDependencies npm packages. I think we should run npm prune --production before packaging Nocturn. It'll save 20+MB.

[k0kubun]

🆒 I was totally unaware of this.

So we have many duplicated symlinks only in darwin package directory.

$ find . -type l
./Nocturn-darwin-x64/Nocturn.app/Contents/Frameworks/Electron Framework.framework/Electron Framework
./Nocturn-darwin-x64/Nocturn.app/Contents/Frameworks/Electron Framework.framework/Libraries
./Nocturn-darwin-x64/Nocturn.app/Contents/Frameworks/Electron Framework.framework/Resources
./Nocturn-darwin-x64/Nocturn.app/Contents/Frameworks/Electron Framework.framework/Versions/Current
./Nocturn-darwin-x64/Nocturn.app/Contents/Frameworks/Mantle.framework/Headers
./Nocturn-darwin-x64/Nocturn.app/Contents/Frameworks/Mantle.framework/Mantle
./Nocturn-darwin-x64/Nocturn.app/Contents/Frameworks/Mantle.framework/Modules
./Nocturn-darwin-x64/Nocturn.app/Contents/Frameworks/Mantle.framework/Resources
./Nocturn-darwin-x64/Nocturn.app/Contents/Frameworks/Mantle.framework/Versions/Current
./Nocturn-darwin-x64/Nocturn.app/Contents/Frameworks/ReactiveCocoa.framework/Headers
./Nocturn-darwin-x64/Nocturn.app/Contents/Frameworks/ReactiveCocoa.framework/Modules
./Nocturn-darwin-x64/Nocturn.app/Contents/Frameworks/ReactiveCocoa.framework/ReactiveCocoa
./Nocturn-darwin-x64/Nocturn.app/Contents/Frameworks/ReactiveCocoa.framework/Resources
./Nocturn-darwin-x64/Nocturn.app/Contents/Frameworks/ReactiveCocoa.framework/Versions/Current
./Nocturn-darwin-x64/Nocturn.app/Contents/Frameworks/Squirrel.framework/Headers
./Nocturn-darwin-x64/Nocturn.app/Contents/Frameworks/Squirrel.framework/Modules
./Nocturn-darwin-x64/Nocturn.app/Contents/Frameworks/Squirrel.framework/Resources
./Nocturn-darwin-x64/Nocturn.app/Contents/Frameworks/Squirrel.framework/Squirrel
./Nocturn-darwin-x64/Nocturn.app/Contents/Frameworks/Squirrel.framework/Versions/Current

I confirmed that current Nocturn.app has many duplicated binaries. It's terrible...
Since all targets are in package, we can safely preserve symlinks.

$ find . -type l | xargs readlink
Versions/Current/Headers
Versions/Current/Mantle
Versions/Current/Modules
Versions/Current/Resources
A
Versions/Current/Headers
Versions/Current/Modules
Versions/Current/ReactiveCocoa
Versions/Current/Resources
A
Versions/Current/Headers
Versions/Current/Modules
Versions/Current/Resources
Versions/Current/Squirrel
A

Looks great to me! Merging.

I noticed that packages include devDependencies npm packages. I think we should run npm prune --production before packaging Nocturn. It'll save 20+MB.

I'll try this too. Thank you for the information.