Config.opt_in: def of bolt@1.27.0.0
Import: import bolt@1.27.0.0/src/config.bend as Config
Lines 284-289 of bolt@1.27.0.0/src/config.bend: https://jend.leeeet.dev/read.txt?path=bolt@1.27.0.0/src/config.bend&start_line=284&end_line=289

import Base

# a rule only its own setting turns on: a group setting, or the group's
# default, would put new findings on projects that never asked for it
# (`thunk`, `transcong`, and the laws' `coverage` and `closed`, which are a
# project's policy rather than defects)
def opt_in(+rule: String) -> Bool:
  List.contains(~String, ~String.eq, ["thunk", "transcong", "coverage", "closed"], rule)

Uses (5):
  https://jend.leeeet.dev/definition.txt?path=Base/base.bend&name=Bool
  https://jend.leeeet.dev/definition.txt?path=Base/base.bend&name=List
  https://jend.leeeet.dev/definition.txt?path=Base/base.bend&name=List.contains
  https://jend.leeeet.dev/definition.txt?path=Base/base.bend&name=String
  https://jend.leeeet.dev/definition.txt?path=Base/base.bend&name=String.eq