# What can I do about this warning? "flag ... does not match any input"

**URL:** <https://discourse.flox.dev/t/what-can-i-do-about-this-warning-flag-does-not-match-any-input/616>\
**Category:** Developing with flox\
**Created:** [January 13, 2023, 4:28pm UTC](https://discourse.flox.dev/t/what-can-i-do-about-this-warning-flag-does-not-match-any-input/616 "2023-01-13T16:28:20Z")\
**Posts on this page:** 3\
**Page:** 1

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**Author:** ![etorreborre](https://yyz2.discourse-cdn.com/flex036/user_avatar/discourse.flox.dev/etorreborre/32/428_2.png) [@etorreborre](https://discourse.flox.dev/u/etorreborre)\
**Post date:** [January 13, 2023, 4:28pm UTC](https://discourse.flox.dev/t/what-can-i-do-about-this-warning-flag-does-not-match-any-input/616/1 "2023-01-13T16:28:20Z")

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Hi, I am getting the following warning when running `flox develop`

```auto
± flox develop
warning: the flag '--override-input flox-floxpkgs/nixpkgs/nixpkgs flake:nixpkgs-stable' does not match any input

```

This is with `0.0.8-r123` and this project: [GitHub - etorreborre/registry: Components as records of functions for Haskell](https://github.com/etorreborre/registry).

Do I need to change anything in my flake definition?

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**Author:** ![tomberek](https://yyz2.discourse-cdn.com/flex036/user_avatar/discourse.flox.dev/tomberek/32/83_2.png) [@tomberek](https://discourse.flox.dev/u/tomberek)\
**Post date:** [January 13, 2023, 10:20pm UTC](https://discourse.flox.dev/t/what-can-i-do-about-this-warning-flag-does-not-match-any-input/616/2 "2023-01-13T22:20:23Z")

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Yes, this is the “floxpkgs” to “flox-floxpkgs” rename issue. This would require an update to your Lines 4 and 11 in the flake.nix

Then a `flox flake update` should resolve the warnings.

> <https://github.com/etorreborre/registry/blob/main/flake.nix#L4>

> <https://github.com/etorreborre/registry/blob/main/flake.nix#L11>

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<div class="post-metadata">

**Author:** ![etorreborre](https://yyz2.discourse-cdn.com/flex036/user_avatar/discourse.flox.dev/etorreborre/32/428_2.png) [@etorreborre](https://discourse.flox.dev/u/etorreborre)\
**Post date:** [January 14, 2023, 12:55pm UTC](https://discourse.flox.dev/t/what-can-i-do-about-this-warning-flag-does-not-match-any-input/616/3 "2023-01-14T12:55:33Z")

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Got it, no more warning now, thanks.