Add which command for printing full path to binary

[LinusU]

Example usage:

$ mint which Carthage/Carthage@0.29.0 carthage
/usr/local/lib/mint/packages/github.com_Carthage_Carthage/build/0.29.0/carthage

$ mint which LinusU/RasterizeXCAssets 
/usr/local/lib/mint/packages/github.com_LinusU_RasterizeXCAssets/build/1.0.0-alpha.2/RasterizeXCAssets

$ mint which carthage                         
/usr/local/lib/mint/packages/github.com_Carthage_Carthage/build/0.29.0/carthage

$ mint which LinusU/NotFound        
🌱  Git repo not found at "https://github.com/LinusU/NotFound.git"

[toshi0383]

which from UNIX doesn’t follow simlinks, does it?
Maybe it should be renamed to something else.

[yonaskolb]

@LinusU what's the motivation for a feature like this?

@toshi0383 good point, though this isn't following symlinks as it's the path used in mint run not the global install path

[LinusU]

what's the motivation for a feature like this?

My main use case was being able to pass these paths into other programs that use the binary. e.g. passing the path to Carthage to XcodeGen.

[yonaskolb]

You should just be able to pass mint run {tool} and just call that instead of {tool}

[mrgrauel]

For fastlane usage it would be good to know the path.

[SpacyRicochet]

Seconding @mrgrauel's comment.

We'd like to use Mint in combination with Fastlane, but without linking the binaries globally, since they might conflict with other versions in use by other projects.

However, Fastlane isn't Mint-aware, so we can't for the swiftLint action to use mint run swiftlint. Instead, we could supply the path of the binary that would be used, but mint doesn't give us a way of retrieving that binary.

So, this PR would be a great addition in our opinion.

[sarastro-nl]

For fastlane usage it would be good to know the path.

Absolutely true! Now I have this ugly hack in my Fastfile just to find out the path to swiftlint:

def lint
  swiftlint_directory = sh('sed -n -e "s/.*swiftlint@\(.*\)/\1/p" ../Mintfile | xargs find /usr/local/lib/mint -name | grep swiftlint | tr -d "\n"')
  swiftlint(
    executable: "#{swiftlint_directory}/swiftlint",
    config_file: "swiftlint.yml",
    strict: true,
    reporter: "junit",
    output_file: "output/swiftlint.junit"
  )
end

[yonaskolb]

I'll add this feature this weekend after #145

[yonaskolb]

Reimplemented in #162
Thanks for the work here @LinusU!

[hilsenrat]

For anyone stumbling upon this PR, I execute Swiftlint (From a Mintfile) via Fastlane like that:

    SWIFTLINT_PATH = sh("mint which swiftlint -m ../Mintfile | tr -d '\n'")  
    swiftlint(  
      executable: "#{SWIFTLINT_PATH}"   
    )   

[ArtFeel]

@hilsenrat Thanks for tip with | tr -d '\n'!

I don't know why, but without that addition, sh action automatically execute binary for a path. For example this code:

lane :lint do
  sh("which brew")
end

Produce that output:

------------------------
--- Step: which brew ---
------------------------
$ which brew
▸ /usr/local/bin/brew
Example usage:
  brew search TEXT|/REGEX/
  brew info [FORMULA|CASK...]
  brew install FORMULA|CASK...
  brew update
  brew upgrade [FORMULA|CASK...]
  brew uninstall FORMULA|CASK...
  brew list [FORMULA|CASK...]