Pulls all elm.json dependencies from github and saves in local cache (requires jq to be installed)

elm-cache-add.sh

#!/bin/sh

set -e

if [ "$(elm --version)" != "0.19.1" ]; then
    echo "Globally installed elm 0.19.1 is required"
    exit 1
fi

export packages=~/.elm/0.19.1/packages

invalid_archive () {
    echo "Invalid archive: $author/$name@$version does not seem to exist"
    cd
    rm -f $pkgdir/archive.zip
    rmdir $pkgdir $packages/$author/$name $packages/$author 2> /dev/null
    exit 1
}

install_dependency() {
    author=$(echo $1 | cut -f1 -d/)
    name=$(echo $1 | cut -f2 -d/)
    version=$(echo $1 | cut -f3 -d/)

    pkgdir=$packages/$author/$name/$version

    if [ -d "$pkgdir" ]; then
        echo "$author/$name@$version already installed"
        exit 0
    fi

    echo "Installing $author/$name@$version"
    mkdir -p "$pkgdir"
    cd "$pkgdir"
    curl -sL -o archive.zip "https://github.com/$author/$name/zipball/$version/"
    unzip -qn archive.zip 2> /dev/null || invalid_archive
    rm archive.zip
    dir=$(ls -d $author-$name*)
    if [ -d "$dir" ]; then
        mv $dir/src $dir/LICENSE $dir/README.md $dir/elm.json .
        elm make --docs=docs.json || true
        rm -r elm-stuff
        rm -r $dir
    fi
}
export -f install_dependency

cat elm.json | jq -r '[.dependencies.direct, .dependencies.indirect] | add | to_entries | map([.key, .value] | join("/")) | .[]' | xargs -I{} bash -c 'install_dependency "{}"'