Build Inputs

#nix #nixos #language #functional #programming

Read files from system are the only impurity from Nix language
Inputs:
- File System
- Dedicated Functions
They need to be explicitly defined
Derivation use build inputs to construct new files
Nix reference files using the content hash. If It does not know its content, it read the file during the evaluation of the derivation

$ echo 123 > data
"${./data}"
"/nix/store/h1aj5h5nasb2dl564nldr6a8ndy7dh6k-data"

Fetchers

They are used to fetch/collect/grab files from the network, and they are from the [[skjs-functions-libraries]]