Gradle task that prints total dependencies size and (dependency+(size in kb)) list sorted by size desc

build.gradle

...
/* Tested with Gradle 6.3 */

tasks.register("depsize") {
    description = 'Prints dependencies for "default" configuration'
    doLast() {
        listConfigurationDependencies(configurations.default)
    }
}

tasks.register("depsize-all-configurations") {
    description = 'Prints dependencies for all available configurations'
    doLast() {
        configurations
                .findAll { it.isCanBeResolved() }
                .each { listConfigurationDependencies(it) }
    }
}

def listConfigurationDependencies(Configuration configuration) {
    def formatStr = "%,10.2f"

    def size = configuration.collect { it.length() / (1024 * 1024) }.sum()

    def out = new StringBuffer()
    out << "\nConfiguration name: \"${configuration.name}\"\n"
    if (size) {
        out << 'Total dependencies size:'.padRight(65)
        out << "${String.format(formatStr, size)} Mb\n\n"

        configuration.sort { -it.length() }
                .each {
                    out << "${it.name}".padRight(65)
                    out << "${String.format(formatStr, (it.length() / 1024))} kb\n"
                }
    } else {
        out << 'No dependencies found';
    }
    println(out)
}
...

For anyone who is having issues with the configurations.default, you can do the following.

1. Print all your configurations to see what you've got.
2. Replace default with a configuration that you would like to analyze. For example, you can use debugImplementationDependenciesMetadata instead of default.
3. Run ./gradlew depsize

cc: @ansyori28

configurations["default"].isCanBeResolved = true

on the top of build.gradle.kts