Locally deploy phoenix liveview using nix

Phoenix Forum Questions / Help
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Are there any known working resources to package using nix and deploy it?

I’ve tried:

But the basic liveview(mix phx.new) uses heroicons and I get errors when building it.

nix build

...
       > Running phase: installPhase
       > Unchecked dependencies for environment prod:
       > * heroicons (https://github.com/tailwindlabs/heroicons.git - v2.1.1)
       >   lock mismatch: the dependency is out of date. To fetch locked version run "mix deps.get"
       > ** (Mix) Can't continue due to errors on dependencies
...
2

I’ve found the best resource to be the BEAM section of the nixpkgs manual. We’re currently building and deploying our platform using nix, and I used that guide as a starting point for the implementation.

I’ve been meaning to write a proper blog post about this at some point, but haven’t gotten around to it yet.

Do you have any specific questions you’d like help with?

Edit: You did actually pose a question, so let me try to help out:

But the basic liveview(mix phx.new) uses heroicons and I get errors when building it.

What does your mix.exs and flake.nix look like?

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3

Maybe try to doing aMIX_ENV=prod mix deps.get. If there is a lock mismatch, this could solve it.

I am not a big fan of just throwing your working directory in as source. Any changes made to files that are not related would result in a rebuild of everything, and all files in directory that are not related to a deployment would also be included. I suggest using the documentation provided and mix2nix for dependencies.

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