nimbus-eth2/nix/tools.nix

16 lines
465 B
Nix

{ pkgs ? import <nixpkgs> { } }:
let
inherit (pkgs.lib) fileContents last splitString flatten remove;
inherit (builtins) map match;
in {
findKeyValue = regex: sourceFile:
let
linesFrom = sourceFile: splitString "\n" (fileContents sourceFile);
matching = regex: lines: map (line: match regex line) lines;
extractMatch = matches: last (flatten (remove null matches));
in
extractMatch (matching regex (linesFrom sourceFile));
}