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CartfileDiff

Build Status

cartfilediff is a simple tool for comparing two Cartfile.resolved files and printing a list of dependencies in the latter which are new or differ in pinned version.

Faster carthage bootstrap

Building dependencies from source with Carthage can be time consuming, especially for large projects or on slower hardware. Carthage does not currently figure out which dependencies need rebuilding when running carthage bootstrap which can result in lengthy build times, even if only one dependency needs rebuilding.

In combination with a cache, you can use cartfilediff to dramatically speed up your CI builds. Store the Carthage build products and the Cartfile.resolved in the cache, and compare the cached Cartfile.resolved with the current Cartfile.resolved at the start of the build. Then run carthage bootstrap with the modified dependencies, if necessary:

#!/bin/bash

CACHED_CARTFILE="cache/Cartfile.resolved"

if [ -e "$CACHED_CARTFILE" ]; then
  OUTDATED_DEPENDENCIES=$(cartfilediff "$CACHED_CARTFILE" Cartfile.resolved)

  if [ ! -z "$OUTDATED_DEPENDENCIES" ]
  then
    echo "Bootstrapping outdated dependencies: $OUTDATED_DEPENDENCIES"
    carthage bootstrap "$OUTDATED_DEPENDENCIES"
  else
    echo "Cartfile.resolved matches cached, skipping bootstrap"
  fi
else
  echo "Cached Cartfile.resolved not found, bootstrapping all dependencies"
  carthage bootstrap
fi

Installation

See Releases for prebuilt pkg installers.

Alternatively, clone this repository and run make install.

Usage

cartfilediff <old Cartfile.resolved> <new Cartfile.resolved>

The tool prints a list of dependencies which need bootstrapping. If nothing needs bootstrapping, the tool prints nothing.

License

CartfileDiff is released under the MIT License.

Acknowledgements

Carthage, for providing the Carthage tool and for portions of source code used in this project.

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Compare Cartfile.resolved for faster carthage bootstrap

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