need some help on installation of haystack

[disperaller]

i want to install haystack to create a RAG pipeline. However, I've tried the following 2 methods, neither could run the importing portion of my experiment:

Essentially, the following two lines could not be ran:
from haystack.nodes import PromptNode
from haystack.components.converters.pypdf import PyPDFToDocument

if i install haystack by pip install farm-haystack[all], the first line of code could be ran (the PromptNode one), however the second line could not be successfully executed, the error is: No module named 'haystack.components'
if i install haystack by pip install haystack-ai, the second line of code could be ran (the PyPDFToDocument one), however the first line of code could not be ran.

Anyone could help me on the installation of haystack?

[LoGic142]

farm-haystack is for haystack 1.x, so the second line won't run as 1.x didn't have converters.
haystack-ai is for 2.x, so first line won't run as PromptNode is not present in 2.x.

My suggestion, install haystack-ai and migrate your codebase accordingly.

Hope it helped!