在Mac OS 10.13.6下安装Clojure Lein时遇到问题

Question

I am using Homebrew with the command brew install leiningen but trying lein repl gives

java.lang.ClassCastException: java.lang.Character cannot be cast to java.uti

l.Map$Entr

followed by many pages ending with

clojure.main.main (main.java:37)

the same happens with Macports or supplied script, boot installs perfectly with Homebrew. I am learning Clojure from the Brave and True book which needs lein repl

Answer 1

To "install" lein just download the download script from the web page and run it : https://raw.githubusercontent.com/technomancy/leiningen/stable/bin/lein

Hope it helps

Answer 2

Consider using sdkman , even if leiningen is straightforward to use:

curl -s "https://get.sdkman.io" | bash

Then open a new terminal and type:

sdk install leiningen

Now try your:

lein repl

While you're at it, sdk can be used to manage your Java installations. Never again worry about dirtying your system with various versions, as they all go in your home directory, cleanly.