# \_FLOX\_PUBLIC\_KEYS() documented on Nix/Nixos tab of https://floxdev.com/docs/install-flox/

**URL:** <https://discourse.flox.dev/t/flox-public-keys-documented-on-nix-nixos-tab-of-https-floxdev-com-docs-install-flox/779>\
**Category:** Help\
**Created:** [August 2, 2023, 12:05am UTC](https://discourse.flox.dev/t/flox-public-keys-documented-on-nix-nixos-tab-of-https-floxdev-com-docs-install-flox/779 "2023-08-02T00:05:20Z")\
**Posts on this page:** 5\
**Page:** 1

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**Author:** ![slimslenderslacks](https://yyz2.discourse-cdn.com/flex036/user_avatar/discourse.flox.dev/slimslenderslacks/32/597_2.png) [@slimslenderslacks](https://discourse.flox.dev/u/slimslenderslacks)\
**Post date:** [August 2, 2023, 12:05am UTC](https://discourse.flox.dev/t/flox-public-keys-documented-on-nix-nixos-tab-of-https-floxdev-com-docs-install-flox/779/1 "2023-08-02T00:05:21Z")

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Is this a doc generation bug? That should look something like what’s shown in the Nix/Generic tab right? Something like flox-store-public-0:8c/B+kjIaQ+BloCmNkRUKwaVPFWkriSAd0JJvuDu4F0=

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**Author:** ![slimslenderslacks](https://yyz2.discourse-cdn.com/flex036/user_avatar/discourse.flox.dev/slimslenderslacks/32/597_2.png) [@slimslenderslacks](https://discourse.flox.dev/u/slimslenderslacks)\
**Post date:** [August 2, 2023, 1:12am UTC](https://discourse.flox.dev/t/flox-public-keys-documented-on-nix-nixos-tab-of-https-floxdev-com-docs-install-flox/779/2 "2023-08-02T01:12:44Z")

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I’m trying to follow the instructions for installing flox with an existing nix installation and using the /nix/nixos tab.

When I run `nix profile install --impure --accept-flake-config 'github:flox/floxpkgs#flox.fromCatalog'` I see this output:

warning: ignoring untrusted substituter ‘[https://cache.floxdev.com](https://cache.floxdev.com)’  
warning: input ‘etc-profiles’ has an override for a non-existent input ‘flox-floxpkgs’  
error: path ‘/nix/store/01y128174yij6ax2hlsk6mgp4l89fbb1-flox-0.2.5-r553’ does not exist and cannot be created

```
   … while evaluating 'getOutPath'

   at /nix/store/862iwi8xjvm368csqj6a41lmqdqwccb5-source/lib//mkFakeDerivation.nix:27:16:

       26| # just build from source
       27| getOutPath = outputName: let
         | ^
       28| stringOutPath = outputs.${outputName};

   … from call site

   at /nix/store/862iwi8xjvm368csqj6a41lmqdqwccb5-source/lib//mkFakeDerivation.nix:118:19:

      117| inherit outputName;
      118| outPath = getOutPath outputName;
         | ^
      119| };

   … while evaluating the attribute 'derivations' of the derivation 'flox-0.2.5-r553'

   at /nix/store/862iwi8xjvm368csqj6a41lmqdqwccb5-source/lib//mkFakeDerivation.nix:133:7:

      132| {
      133| name = defaultOut.name;
         | ^
      134| system = eval.system;

```

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<div class="post-metadata">

**Author:** ![Samuel\_Rose](https://yyz2.discourse-cdn.com/flex036/user_avatar/discourse.flox.dev/samuel_rose/32/515_2.png) [@Samuel\_Rose](https://discourse.flox.dev/u/Samuel_Rose)\
**Post date:** [August 9, 2023, 6:21pm UTC](https://discourse.flox.dev/t/flox-public-keys-documented-on-nix-nixos-tab-of-https-floxdev-com-docs-install-flox/779/3 "2023-08-09T18:21:10Z")

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@slimslenderslacks thanks for giving flox a try. I was able to verify this problem, and am looking into it now.

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<div class="post-metadata">

**Author:** ![Samuel\_Rose](https://yyz2.discourse-cdn.com/flex036/user_avatar/discourse.flox.dev/samuel_rose/32/515_2.png) [@Samuel\_Rose](https://discourse.flox.dev/u/Samuel_Rose)\
**Post date:** [August 9, 2023, 7:47pm UTC](https://discourse.flox.dev/t/flox-public-keys-documented-on-nix-nixos-tab-of-https-floxdev-com-docs-install-flox/779/4 "2023-08-09T19:47:01Z")

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@slimslenderslacks it turns out we had a render error in our documentation

Where our docs give instruction for “Configure Substituters” please use these values

```auto
  nix.settings.extra-trusted-substituters = ["https://cache.floxdev.com"];
  nix.settings.extra-trusted-public-keys = ["flox-store-public-0:8c/B+kjIaQ+BloCmNkRUKwaVPFWkriSAd0JJvuDu4F0="];

```

…in your configuration.nix

Then repeat `sudo nixos-rebuild switch` and the rest of the install instructions and let us know if this resolves the issue for you. Thanks again!

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<div class="post-metadata">

**Author:** ![Samuel\_Rose](https://yyz2.discourse-cdn.com/flex036/user_avatar/discourse.flox.dev/samuel_rose/32/515_2.png) [@Samuel\_Rose](https://discourse.flox.dev/u/Samuel_Rose)\
**Post date:** [August 10, 2023, 1:03pm UTC](https://discourse.flox.dev/t/flox-public-keys-documented-on-nix-nixos-tab-of-https-floxdev-com-docs-install-flox/779/5 "2023-08-10T13:03:23Z")

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We did also update the docs with the correct information too. [Install flox | flox:docs](https://floxdev.com/docs/install-flox/)

Thanks for highlighting this issue.