ktlint-ruleset-template/src/main/kotlin/yourpkgname/CustomRuleSetProvider.kt

package yourpkgname

import com.github.shyiko.ktlint.core.RuleSet
import com.github.shyiko.ktlint.core.RuleSetProvider

class CustomRuleSetProvider : RuleSetProvider {

    override fun get(): RuleSet = RuleSet("custom", NoVarRule())
}