MIT licensed and maintained by Nikita Volkov
This version can be pinned in stack with:deque-0.4.4.1@sha256:253d6c989a760106dfff853a39257e7f11613a427b022ec0e8367473711585e5,1993
Used by 1 package in lts-21.25(full list with versions):

Strict and lazy implementations of Double-Ended Queue (aka Dequeue or Deque) based on head-tail linked list.