Hello. I'm trying to build a Docker image from a flake using haskell-flake. The image is very large and when using the suggestions on the haskell-flake website, it gets reduced for just the executables but just for the Haskell portion. The package has some Rust dependencies that are included in the image wholesale, code, readmes, everything. Is there a guide on how to avoid this?

Hello, anyone familiar with nixGL?

It is. I have an app that is built with a flake. It has a UI, so to run it, I have to do nixGL ./result/bin/myapp.

I'm trying to bundle it into a Docker image and I wonder if I can bundle nixGL in the image, or if that defeats the purpose given that nixGL is an impure compat layer to the world outside nix

I currently have nixGL installed on my profile, but I see in the docs you can use it as a flake input and overlay it on top of nixpkgs

trying to add nixGL to the image is giving me an error that builtins.currentTime is missing, which seems to point to nixGL being impure

I have an "app" (which is a library output, it would never occur to me to make this an app) that I'd like to run with nix run packages.${system}.foo.someApp, but I get the following error:

error: expected flake output attribute 'packages.x86_64-linux.foo.someApp' to be a derivation or path but found a set: { type = "app"; meta = «thunk»; program = «thunk»; }

$ nix build .#foo.someApp

error: expected flake output attribute 'packages.x86_64-linux.foo.someApp' to be a derivation or path but found a set: { type = "app"; meta = «thunk»; program = «thunk»; }

is there a way to tag a flake output as impure?