不能在Ocaml TopLevel中使用TopLevel加载电池

Question

我成功地安装了ocaml-batteries-included和findlib。

我可以无问题地找到-package电池-c mycode.ml`。

而且，如果我做了ocamlfind list，我会得到

$ ocamlfind list
batteries           (version: 2.0)
batteries.pa_comprehension (version: 2.0)
batteries.pa_comprehension.syntax (version: 2.0)
batteries.pa_llist  (version: 2.0)
batteries.pa_llist.syntax (version: 2.0)
batteries.pa_string (version: 2.0)
batteries.pa_string.syntax (version: 2.0)
batteries.syntax    (version: 2.0)
bigarray            (version: [distributed with Ocaml])
camlp4              (version: [distributed with Ocaml])
...

问题是using batteries in ocaml (toplevel)。

我已经设置了.ocamlinit，如下所示：

#use "topfind";;

Toploop.use_silently
             Format.err_formatter (Filename.concat (Findlib.package_directory
             "batteries") "battop.ml");;

但是当我启动ocaml时，我得到了这样的信息：

$ ocaml
        OCaml version 4.00.1

Findlib has been successfully loaded. Additional directives:
  #require "package";;      to load a package
  #list;;                   to list the available packages
  #camlp4o;;                to load camlp4 (standard syntax)
  #camlp4r;;                to load camlp4 (revised syntax)
  #predicates "p,q,...";;   to set these predicates
  Topfind.reset();;         to force that packages will be reloaded
  #thread;;                 to enable threads

Exception: Fl_package_base.No_such_package ("batteries", "").

此外，如果我在#list中使用ocaml toplevel，我会得到

# #list;;
bigarray            (version: [distributed with Ocaml])
camlp4              (version: [distributed with Ocaml])
camlp4.exceptiontracer (version: [distributed with Ocaml])
camlp4.extend       (version: [distributed with Ocaml])
...

我看不见batteries 包.

，怎么了？

Answer 1

你为什么不使用OPAM？(https://github.com/OCamlPro/opam)

安装OPAM，切换到您喜欢的4.0x编译器版本(例如opam switch 4.00.1)，然后运行：opam install batteries。我建议使用opam install utop和使用utop代替香草托普利。在任何一种情况下：

将以下内容放入您的~/.ocamlinit

#use "topfind";;
#require "batteries";;
open Batteries;;

只有这样你才能让电池正常工作。