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要安装 OPAM(已安装 ocaml),我遵循了本指南: https ://github.com/realworldocaml/book/wiki/Installation-Instructions 。以下是我安装 OPAM 的步骤

$ sudo add-apt-repository ppa:avsm/ppa
$ sudo apt-get update
$ sudo apt-get install curl build-essential m4 ocaml opam
$ opam init (and choose yes)
$ eval `opam config env`
$ opam switch 4.02.3

每当我尝试安装任何软件包(如 utop)时,我都会收到此错误:

Fatal error:
# opam-version    1.2.2
# os              linux
Cannot remove /home/leonard/.opam/archives/camomile.0.8.5+opam.tar.gz (# opam-version    1.2.2
# os              linux
opam: "unlink" failed on /home/leonard/.opam/archives/camomile.0.8.5+opam.tar.gz: Permission denied).

关于我做错了什么有什么想法吗?

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