Perm.internal_ins_pick: def of bend-mathlib@0.8.1.0
Import: import bend-mathlib@0.8.1.0/perm.bend as Perm
Lines 83-88 of bend-mathlib@0.8.1.0/perm.bend: https://jend.leeeet.dev/read.txt?path=bend-mathlib@0.8.1.0/perm.bend&start_line=83&end_line=88

import Base
import bendlib-kernel-list@1.0.0.0/list.bend as K

def internal_ins_pick(-A: Data, b: Bool, +x: A, +y: A, +t: List<&2, A>, -r: List<&2, A>, ih: K.perm(A, x <> t, r)) -> K.perm(A, x <> y <> t, Bool.pick(List<&2, A>, b, x <> y <> t, y <> r)):
  match b:
    case True{}:
      perm_refl(A, x <> y <> t)
    case False{}:
      perm_trans(A, x <> y <> t, y <> x <> t, y <> r, perm_swap(A, x, y, t), perm_cons(A, y, x <> t, r, ih))

Uses (8):
  https://jend.leeeet.dev/definition.txt?path=Base/base.bend&name=Bool
  https://jend.leeeet.dev/definition.txt?path=Base/base.bend&name=Bool.pick
  https://jend.leeeet.dev/definition.txt?path=Base/base.bend&name=List
  https://jend.leeeet.dev/definition.txt?path=bend-mathlib@0.8.1.0/perm.bend&name=perm_cons
  https://jend.leeeet.dev/definition.txt?path=bend-mathlib@0.8.1.0/perm.bend&name=perm_refl
  https://jend.leeeet.dev/definition.txt?path=bend-mathlib@0.8.1.0/perm.bend&name=perm_swap
  https://jend.leeeet.dev/definition.txt?path=bend-mathlib@0.8.1.0/perm.bend&name=perm_trans
  https://jend.leeeet.dev/definition.txt?path=bendlib-kernel-list@1.0.0.0/list.bend&name=perm