Browse Source

lib.trivial: add a new importJSON function

This is meant to be used by packages who often re-generate their inputs.

Producing valid JSON is easier than nix, and also garantees it's purity.
nixos-19.03
zimbatm 7 years ago
parent
commit
22d7c08dc5
  1. 21
      lib/trivial.nix

21
lib/trivial.nix

@ -75,4 +75,25 @@ rec {
min = x: y: if x < y then x else y;
max = x: y: if x > y then x else y;
/* Reads a JSON file. It is useful to import pure data into other nix
expressions.
Example:
mkDerivation {
src = fetchgit (importJSON ./repo.json)
#...
}
where repo.json contains:
{
"url": "git://some-domain/some/repo",
"rev": "265de7283488964f44f0257a8b4a055ad8af984d",
"sha256": "0sb3h3067pzf3a7mlxn1hikpcjrsvycjcnj9hl9b1c3ykcgvps7h"
}
*/
importJSON = path:
builtins.fromJSON (builtins.readFile path);
}

Loading…
Cancel
Save