# upToDateWhen {false} does not rerun task **URL:** \ **Category:** Help/Discuss\ **Created:** [September 8, 2023, 5:19am UTC](https://discuss.gradle.org/t/uptodatewhen-false-does-not-rerun-task/46432 "2023-09-08T05:19:46Z")\ **Posts on this page:** 6\ **Page:** 1
**Author:** ![sreeramsunkara](https://avatars.discourse-cdn.com/v4/letter/s/f1d935/32.png) [@sreeramsunkara](https://discuss.gradle.org/u/sreeramsunkara)\ **Post date:** [September 8, 2023, 5:19am UTC](https://discuss.gradle.org/t/uptodatewhen-false-does-not-rerun-task/46432/1 "2023-09-08T05:19:46Z")
Hi, I am writing a custom task to run lint’er on “modified files”. ```gradle tasks.register("ktlintCheck", JavaExec::class.java) { javaExec -> javaExec.classpath(ktlintConfig) javaExec.mainClass.set("com.pinterest.ktlint.Main") javaExec.group = "verification" val modifiedFiles = getKtModifiedFiles() if (modifiedFiles.isEmpty()) { project.logger.info("Ktlint: No files modified.") javaExec.enabled = false } else { project.logger.info("Ktlint: Files modified. Running Ktlint") javaExec.enabled = true } modifiedFiles.forEach { eachFile -> javaExec.args(eachFile) } javaExec.outputs.upToDateWhen { false } } ``` I am explicitly setting `upToDateWhen = false`, so that Gradle can re-run task everytime I run `ktlintCheck`. But somehow Gradle identifies that there is no change in the task and does not run the task though there are changes to modified files. If I run `./gradlew ktlintCheck --rerun` it works fine. I also want to make my custom task to rerun when I run `./gradlew ktlintCheck`. ---
**Author:** ![Vampire](https://sea1.discourse-cdn.com/gradle/user_avatar/discuss.gradle.org/vampire/32/9082_2.png) [@Vampire](https://discuss.gradle.org/u/Vampire)\ **Post date:** [September 8, 2023, 12:12pm UTC](https://discuss.gradle.org/t/uptodatewhen-false-does-not-rerun-task/46432/2 "2023-09-08T12:12:02Z")
If you want to disable Gradle’s up-to-date checks, better use `doNotTrackState("I don't want to")` instead of `upToDateWhen`. ---
**Author:** ![sreeramsunkara](https://avatars.discourse-cdn.com/v4/letter/s/f1d935/32.png) [@sreeramsunkara](https://discuss.gradle.org/u/sreeramsunkara)\ **Post date:** [September 8, 2023, 3:28pm UTC](https://discuss.gradle.org/t/uptodatewhen-false-does-not-rerun-task/46432/3 "2023-09-08T15:28:17Z")
Added `doNotTrackState("I don't want to")` ```gradle tasks.register("ktlintCheck", JavaExec::class.java) { javaExec -> javaExec.classpath(ktlintConfig) javaExec.mainClass.set("com.pinterest.ktlint.Main") javaExec.group = "verification" javaExec.doNotTrackState("Refresh needed everytime!") val modifiedFiles = getKtModifiedFiles() if (modifiedFiles.isEmpty()) { project.logger.info("Ktlint: No files modified.") javaExec.enabled = false } else { project.logger.info("Ktlint: Files modified. Running Ktlint") javaExec.enabled = true } modifiedFiles.forEach { eachFile -> javaExec.args(eachFile) } } ``` Still the same error: `> Task :app:ktlintCheck SKIPPED Skipping task ':app:ktlintCheck' as task onlyIf 'Task is enabled' is false.` If “how I apply this task to my build.gradle” is important: I am adding this task as a gradle custom plugin to my build.gradle. ---
**Author:** ![Vampire](https://sea1.discourse-cdn.com/gradle/user_avatar/discuss.gradle.org/vampire/32/9082_2.png) [@Vampire](https://discuss.gradle.org/u/Vampire)\ **Post date:** [September 8, 2023, 4:46pm UTC](https://discuss.gradle.org/t/uptodatewhen-false-does-not-rerun-task/46432/4 "2023-09-08T16:46:23Z")
Well, first time you mention the “error” message. If you have an `onlyIf` that says `false`, there is no way to run the task anyway. Even though you said so, not even `--rerun` can achieve that, it will still be skipped. That it worked with `--rerun` for you was most probably just a coincidence. But you can override any set only if specs using for example `setOnlyIf { true }`. ---
**Author:** ![sreeramsunkara](https://avatars.discourse-cdn.com/v4/letter/s/f1d935/32.png) [@sreeramsunkara](https://discuss.gradle.org/u/sreeramsunkara)\ **Post date:** [September 8, 2023, 6:21pm UTC](https://discuss.gradle.org/t/uptodatewhen-false-does-not-rerun-task/46432/5 "2023-09-08T18:21:40Z")
I am not explicitly setting setOnlyIf {false}, based on `enabled` flag something is happening in the task and is not getting out of that state. And yes, infact “–rerun” worked as a coincidence. ```gradle if (modifiedFiles.isEmpty()) { project.logger.info("Ktlint: No files modified.") javaExec.enabled = false } else { project.logger.info("Ktlint: Files modified. Running Ktlint") javaExec.enabled = true } ``` I tried to setOnlyIf { true } but nothing changed. I changed my logic from `enabled` to change values like this ```gradle val modifiedFiles = getKtModifiedFiles() if (modifiedFiles.isEmpty()) { project.logger.info("Ktlint: No files modified.") javaExec.args("invalid/unknown.txt") } else { project.logger.info("Ktlint: Files modified. Running Ktlint") modifiedFiles.forEach { eachFile -> javaExec.args(eachFile) } } ``` I set `javaExec.doNotTrackState("Not needed")` but still my `modifiedFiles` are always having the same list whatever I have during first run. Is there a property that I can set to force-rerun? ---
**Author:** ![Vampire](https://sea1.discourse-cdn.com/gradle/user_avatar/discuss.gradle.org/vampire/32/9082_2.png) [@Vampire](https://discuss.gradle.org/u/Vampire)\ **Post date:** [September 8, 2023, 9:53pm UTC](https://discuss.gradle.org/t/uptodatewhen-false-does-not-rerun-task/46432/6 "2023-09-08T21:53:26Z")
> I am not explicitly setting setOnlyIf {false} I did not say you do. I said you need to do `setOnlyIf { true }` to replace all set `onlyIf` actions with the always-true on. But actually, I misread, sorry. Somehow my brain stopped reading at `onlyIf`. As it is the “Task is enabled” `onlyIf`, why would you expect the task to run if you set it to `enabled = false`? Or is it, that the calculation of the `enabled` is what you assume to be wrong? Do you have configuration cache enabled? Because then the task’s configuration is persisted and if recognized configuration cache inputs did not change will not be reevaluated. Depending on what `getKtModifiedFiles` does this might be a shortcoming of the recognition or you just need to declare it explicitly. Or maybe it is even better to not calculate `enabled` at configuration time, potentially when it is not even possible the task needs to run, but instead use `onlyIf { ... ]` to do you decision, then it is done at execution time.