extract-status-go-config.nix

#
# This nix expression contains logic to extract the value of a field in the STATUS_GO_VERSION file, when given the field name
#

{ lib }:

let
  inherit (lib) fileContents findFirst head splitString;
  content = fileContents ../../STATUS_GO_VERSION; # TODO: Simplify this path search with lib.locateDominatingFile
  extractStatusGoConfig =
    fieldName:
      let lines = splitString "\n" content;
          # Find the first line containing the field name
          matchedLine = findFirst (line: (builtins.match "${fieldName}=.+" line) != null) null lines;
      in if matchedLine != null
         # If line is found, extract the field value
         then head (builtins.match "${fieldName}=(.+)" matchedLine)
         else throw "Could not find '${fieldName}' in ${content}";

in extractStatusGoConfig