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 Functions Libraries

  • builtins.fetchUrl
  • builtins.fetchTarball
  • builtins.fetchGit
  • builtins.fetchClosue
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#nix #nixos #language #functional #programming