henrytill

(* an abstract signature for instantiations of the existential quantifier *)
module type EXISTS =
sig
  (* the predicate *)
  type 'a phi

  (* the existential type *)
  type t

  (* the introduction rule *)

henrytill

module type Functor = sig
  type 'a t
  val map : ('a -> 'b) -> ('a t -> 'b t)
end

module Mu (F : Functor) : sig
  type t = { mu : t F.t }
  val cata : ('a F.t -> 'a) -> (t -> 'a)
end = struct

henrytill

module type Functor = sig
  type 'a t
  val map : ('a -> 'b) -> ('a t -> 'b t)
end

module Iso = struct
  type ('a, 'b) t = { fwd : 'a -> 'b; bck : 'b -> 'a }

  let fwd i = i.fwd
  let bck i = i.bck

henrytill

;   Copyright (c) Rich Hickey. All rights reserved.
;   The use and distribution terms for this software are covered by the
;   Eclipse Public License 1.0 (http://opensource.org/licenses/eclipse-1.0.php)
;   which can be found in the file epl-v10.html at the root of this distribution.
;   By using this software in any fashion, you are agreeing to be bound by
;   the terms of this license.
;   You must not remove this notice, or any other, from this software.

(set! *warn-on-reflection* true)

henrytill

#! /usr/bin/env bash

channels=${1:-nixos-15.09-small nixos-15.09 nixos-unstable-small nixos-unstable nixpkgs-unstable}
site=${2:-https://nixos.org/channels}

getChannelVersion () {
    basename $(curl -ILs -w %{url_effective} -o /dev/null $1) | cut -d - -f 2
}

for name in ${channels[@]}