How to uninstall (to start over)?

Question

My Clojure/Lein/Cider combo is broken. I would like to completely remove everything and reinstall, but do not know what "everything" amounts to.

Thanks in advance,
Bruce

Answer 1

The answer to that is going to depend on how you installed them (and what O/S you're on etc).

Comments

Hello! Thanks for responding.

Running on
macOS Catalina 10.15.6
Java: OpenJDK Runtime Environment (build 1.8.0_282-b08)

lein installed using homebrew:
/usr/local/Cellar/leiningen/2.9.5/bin/lein

Doing a find on clojure*.jar:
/usr/local/Cellar/clojure/1.10.2.774/libexec/clojure-tools-1.10.2.774.jar
.m2/repository/org/clojure/clojure/1.3.0/clojure-1.3.0.jar
.m2/repository/org/clojure/clojure/1.10.1/clojure-1.10.1.jar
.m2/repository/org/clojure/clojure/1.8.0/clojure-1.8.0.jar
.m2/repository/clojure-complete/clojure-complete/0.2.4/clojure-complete-0.2.4.jar
.m2/repository/clojure-complete/clojure-complete/0.2.5/clojure-complete-0.2.5.jar

{I have tried playing with clojure in the past}

emacs clojure-mode:
.emacs.d/elpa/clojure-mode-20201126.1558

Contents of ~/.lein/profiles.clj:
{:user {:plugins [[cider/cider-nrepl "0.8.1"]]}}%

Doing a find on cider*:
.m2/repository/cider/cider-nrepl/0.8.1/cider-nrepl-0.8.1.jar
.emacs.d/elpa/cider-20210127.640

lein repl
errors out. Error starts with:
clojure.lang.Compiler$CompilerException: Syntax error compiling at (cider/nrepl.clj:1:1).
#:clojure.error{:phase :compile-syntax-check, :line 1, :column 1, :source "cider/nrepl.clj"}

followed by the stack trace. In the middle of it is:
Caused by: java.io.FileNotFoundException: Could not locate clojure/tools/nrepl/server__init.class, clojure/tools/nrepl/server.clj or clojure/tools/nrepl/server.cljc on classpath.

and more stack trace.

It occurs to me that the cider version under elpa is totally different. Could that be the problem?

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The problem with lein repl is that you have an extremely old version of cider-nrepl specified in your ~/.lein/profiles.clj file and it has syntax that is no longer accepted by Clojure.

The first thing to try is changing version 0.8.1 to 0.25.8 in ~/.lein/profiles.clj

If that doesn't get lein repl running, just delete your ~/.lein/profiles.clj file (having inappropriate plugins or outdated plugins).

You have the latest Clojure CLI installed, so you should be able to run this to get a REPL too: clj

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Thank you!
lein repl is back and cider-jack-in works too.
But cider-jack-in is telling me I should upgrade cider.
How do I do that safely? And what version should I be on the lookout for?

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No idea about Emacs/CIDER, sorry. I haven't used those for many years.

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That's okay. Out of curiosity - what editor/IDE do you use?

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I switched from Emacs/CIDER to Atom/ProtoREPL about four or five years ago, then ProtoREPL became unmaintained so I switched to Atom/Chlorine (which I really like because you only need a plain Socket REPL -- no dependencies at all) and then the Chlorine author ported it to VS Code as Clover last year and, at that point, I switched to VS Code/Clover.

And now Calva has a mode that disables its own REPL UI so I now have VS Code/Clover+Calva (still using Clover for REPL stuff, but able to leverage all the LSP-driven static code analysis from Calva, which is great, and I was able to uninstall a bunch of other VS Code extensions because Calva "does all that").