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.
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echo "Bootstrapping outdated dependencies: $OUTDATED_DEPENDENCIES"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
See Releases for prebuilt pkg installers.
Alternatively, clone this repository and run make install.
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.
CartfileDiff is released under the MIT License.
Carthage, for providing the Carthage tool and for portions of source code used in this project.