Carthage's CLI sucks. I need to pass all these flags, it can't remember them. You have to bootstrap each time you pull? "Bootstrap" means first time! "Update" is too ambiguous. The hidden cache gets corrupted. There, I fixed it for you, Carthage developers, you fucking scum of the earth.

cart

#!/bin/bash

PLATFORM=Mac

function main {
    if [ "$1" == "repin" ]
    then
	update
    elif [ "$1" == "install" ]
    then
	bootstrap
    elif [ "$1" == "clean" ]
    then
	clean
    else
	echo "Usage:"
	echo "  cart install    Run this if someone else updated a dependency."
	echo "                  Downloads and compiles dependencies, based on "
	echo "                  the given pinned hashes in Cartfile.resolved."
	echo ""
	echo "  cart repin      Run this if you updated a dependency."
	echo "                  Sets new pinned hashes in Cartfile.resolved, "
	echo "                  based on the given dependencies in Cartfile, "
	echo "                  then installs."
	echo ""
	echo "  cart clean      Run this if something's broken."
	echo "                  Blows away all transient builds and dependencies."
	echo "                  Your next \`cart install\` will take a lot longer."
	exit 1
    fi
}

function update {
    runCarthage "update"
}

function bootstrap {
    runCarthage "bootstrap"
}

function clean {
    rm -rf DerivedData
    rm -rf Carthage
    rm -rf ~/Library/Caches/carthage
    rm -rf ~/Library/Caches/org.carthage.CarthageKit
}

function runCarthage {
    cmd="carthage $1 --platform $PLATFORM --configuration Debug --cache-builds"
    echo $cmd
    eval $cmd
}

main $1