Version 1.21.0 of package Cider has just been released in NonGNU ELPA. You can now find it in M-x list-packages RET.
Cider describes itself as: ====================================================== Clojure Interactive Development Environment that Rocks ====================================================== More at https://elpa.nongnu.org/nongnu/cider.html ## Summary: Provides a Clojure interactive development environment for Emacs, built on top of nREPL. See https://docs.cider.mx for more details. ## Recent NEWS: # Changelog ## master (unreleased) ## 1.21.0 (2026-02-07) ### Changes - [#3854](https://github.com/clojure-emacs/cider/pull/3854): Use buttons for items in `cider-ns-browser` to allow clicking and evil's `RET` to navigate. - Drop support for Emacs 27. - This was prompted by upstream deps dropping support for it. - Remove deprecated `cider-*-global-opts`. - Move Emacs Lisp code under `lisp/` folder to improve the structure of the repo. - That's not a user-visible change, but might affect the packaging depending on how you're installing CIDER. ### Bugs fixed - [#3853](https://github.com/clojure-emacs/cider/issues/3853): Fix mangling of printed representations. - This was caused by a bug in nREPL, that was addressed in nREPL 1.5.2 ## 1.20.0 (2025-11-05) ### New features - [#3847](https://github.com/clojure-emacs/cider/issues/3847): Inspector: tidy up namespaced-qualified keywords. ### Changes - Bump the injected `nrepl` to [1.5.1](https://github.com/nrepl/nrepl/blob/master/CHANGELOG.md#151-2025-10-18). - * [nrepl#385](https://github.com/nrepl/nrepl/pull/385): Preserve filename in functions compiled during regular eval. - Bump the injected `piggieback` to [0.6.1](https://github.com/nrepl/piggieback/blob/master/CHANGES.md#061-2025-12-31). - Bump the injected `cider-nrepl` to [0.58.0](https://github.com/clojure-emacs/cider-nrepl/blob/master/CHANGELOG.md#0580-2025-10-16). - * [cider-nrepl#951](https://github.com/clojure-emacs/cider-nrepl/pull/951): Debug: correctly process `#dbg` tag during `load-file`. - [#3834](https://github.com/clojure-emacs/cider/issues/3834): Change `cider-ns-refresh` to always use Clojure REPL. ### Bugs fixed - [#3832](https://github.com/clojure-emacs/cider/issues/3832): Fix `nrepl--eval-request` sending duplicate info. - [#3837](https://github.com/clojure-emacs/cider/issues/3837): Fix broken stacktrace response when `C-c C-p` throws an exception. - [orchard#353](https://github.com/clojure-emacs/orchard/pull/353): Stacktrace: flag Clojure functions as duplicate. - [orchard#355](https://github.com/clojure-emacs/orchard/pull/355): Java: resolve source files for non-base JDK classes. - [#3834](https://github.com/clojure-emacs/cider/issues/3834): Fix `cider-ns-refresh` throwing an error when a Clojure REPL exists, but `cider-current-repl` does not support the required operations. - [#3848](https://github.com/clojure-emacs/cider/issues/3848): Format: fix `cider-format` crashing when format options are set. ## 1.19.0 (2025-07-10) ### New features - [#3359](https://github.com/clojure-emacs/cider/pull/3359): Add customizable default connection params (see `cider-connect-default-params` and `cider-connect-default-cljs-params`). - [#3828](https://github.com/clojure-emacs/cider/issues/3828): Inspector: diff mode. - [#3828](https://github.com/clojure-emacs/cider/issues/3828): Inspector: sorting maps by keys. ### Changes - Bump the injected `cider-nrepl` to [0.57.0](https://github.com/clojure-emacs/cider-nrepl/blob/master/CHANGELOG.md#0570-2025-06-29). - [cider-nrepl#941](https://github.com/clojure-emacs/cider-nrepl/pull/941): Stop vendoring Fipp dependency. - [cider-nrepl#943](https://github.com/clojure-emacs/cider-nrepl/pull/943): Reduce debugger instrumentation bytecode footprint. - [orchard#342](https://github.com/clojure-emacs/orchard/pull/342): Inspector: add hexdump view mode. - [orchard#349](https://github.com/clojure-emacs/orchard/pull/349): Inspector: add ability to sort maps by key. - [orchard#350](https://github.com/clojure-emacs/orchard/pull/350): Inspector: add diff mode and `orchard.inspect/diff`. - [#3816](https://github.com/clojure-emacs/cider/issues/3816): **(Breaking)** Remove enrich-classpath support from cider-jack-in. - [#3817](https://github.com/clojure-emacs/cider/issues/3817): Enable `cider-download-java-sources` by default. ## 1.18.0 (2025-04-30) ### New features - [#3802](https://github.com/clojure-emacs/cider/issues/3802): Inspector analytics. - [#3802](https://github.com/clojure-emacs/cider/issues/3802): Inspector table view-mode. ... ...
