Accessing current Nixpacks file

I need to install Poppler on my Railway environment. From what I can see one way to do this is via the Nixpacks file. I don't currently have one on my local. Is there a way to install Poppler via the Railway GUI. If not, is there a way to get the current Nixpacks file so I can add Poppler, without risking breaking other stuff by writing the Nixpacks file from scratch.

N/A

you dont need to write one from scratch at all, you can just add onto it like so

[phases.setup]
nixPkgs = ['...', 'poppler']

the ... is an extending array, it adds poppler onto whatever nix packages that nixpacks was already going to install

Thanks mate! How do I find the path to poppler - I need to specify it in my code.

do you though? wouldnt whatever library you are using check the $PATH? and i assume thats where poppler would be

You're probably right. ChatGPT seems to think I need to specify the path, but should probably test first

let me know how that goes!