when: "adding a library to the model"
        tomlFile << """
bar = {group="org.gradle.test", name="bar", version="1.0"}
"""
        run 'verifyExtension'
        then: "extension is regenerated"
        operations.hasOperation("Executing generation of dependency accessors for libs")

        when: "updating a version in the model"

    private Model generateFromModel(Model sourceModel) {
        def tomlFile = Files.createTempFile(tempTomlDir.toPath(), "test-", ".toml")

        def writer = Files.newBufferedWriter(tomlFile)
        writer.withCloseable {
            def tomlWriter = new TomlWriter(it)
            tomlWriter.generate(sourceModel.deps)
        }

        return parse(tomlFile)
    }

    private Model parse(String resourceName) {