Add jack-in support for ClojureCLR

.github/workflows/test.yml

@@ -32,17 +32,21 @@ jobs:
         os: [ubuntu-latest]
         emacs_version: ['28.2', '29.3', '30.1']
         java_version: ['21']
+        dotnet_version: ['10.0.7']
         include:
           # For other OSes, test only the latest stable Emacs version.
           - os: macos-latest # aarch64
             emacs_version: '30.1'
             java_version: '21'
+            dotnet_version: '10.0.7'
           - os: macos-15 # x64
             emacs_version: '30.1'
             java_version: '21'
+            dotnet_version: '10.0.7'
           - os: windows-latest
             emacs_version: '30.1'
             java_version: '21'
+            dotnet_version: '10.0.7'
 
     steps:
     - name: Set up Emacs
@@ -109,6 +113,16 @@ jobs:
     - run: |
         pip install basilisp==0.5.0
 
+    - name: Prepare dotnet
+      uses: xt0rted/setup-dotnet@v1.5.0
+      with:
+        dotnet-version: ${{matrix.dotnet_version}}
+
+    - name: Prepare ClojureCLR
+      run: |
+        dotnet tool install --global Clojure.Main --version 1.12.3-alpha8
+        dotnet tool install --global Clojure.Cljr --version 0.1.0-alpha11
+
     - name: Test integration
       run: |
         # The tests occasionally fail on macos&win in what is seems to

CHANGELOG.md

@@ -10,6 +10,7 @@
 - Cache the result of `cider--running-nrepl-paths` (used by `cider-locate-running-nrepl-ports`) for `cider-running-nrepl-paths-cache-ttl` seconds (default 5). Repeated `cider-connect` completions no longer re-spawn a fresh round of `ps`/`lsof` subprocesses each time. `cider-clear-running-nrepl-paths-cache` discards the cache on demand.
 - New `nrepl-make-eval-handler` with a keyword-arg API (`:on-value`, `:on-stdout`, `:on-stderr`, `:on-done`, `:on-eval-error`, `:on-content-type`, `:on-truncated`). Sub-handlers no longer take a buffer argument -- they close over whatever they need. `nrepl-make-response-handler`, the legacy 7-positional-arg form, is preserved as an obsolete shim that adapts the old (buffer x) lambdas to the new (x) lambdas, so existing extensions keep working.
 - Decouple the nREPL transport layer from CIDER's UI layer (closes [#1099](https://github.com/clojure-emacs/cider/issues/1099)). `nrepl-make-eval-handler` is now CIDER-agnostic: it no longer references `nrepl-namespace-handler-function`, `nrepl-err-handler-function`, `nrepl-need-input-handler-function`, or any hardcoded UI strings. New `:on-ns` and `:on-status` keyword slots let any consumer wire up their own namespace tracking and status handling. The editor-level `cider-make-eval-handler` wraps it with CIDER's UI behavior (ns tracking, default error handler, need-input prompt, "Evaluation interrupted." / "Namespace not found." messages); in-tree callers all use it.
+- [#3839](https://github.com/clojure-emacs/cider/pull/3839): Add jack-in support for ClojureCLR.
 
 ### Bugs fixed
 

doc/modules/ROOT/pages/basics/up_and_running.adoc

@@ -182,6 +182,7 @@ The following Clojure build tools are supported so far
 - kbd:[M-3 C-c C-x j u] jack-in using babashka.
 - kbd:[M-4 C-c C-x j u] jack-in using nbb.
 - kbd:[M-5 C-c C-x j u] jack-in using basilisp.
+- kbd:[M-6 C-c C-x j u] jack-in using ClojureCLR.
 
 Here is an example of how to bind kbd:[F12] for quickly bringing up a
 babashka REPL:

doc/modules/ROOT/pages/caveats.adoc

@@ -60,13 +60,11 @@ from your Emacs config.
 
 == ClojureCLR Support
 
-CIDER currently has very basic support for ClojureCLR (via Arcadia's nREPL server). The reasons for this are the following:
+CIDER currently has very basic support for ClojureCLR (via either a port of Babashka's nREPL server or Arcadia's nREPL server). The reasons for this are the following:
 
-* nREPL itself runs only on the JVM (because it leverages Java APIs
-internally). There's an
-https://github.com/clojure/clr.tools.nrepl[nREPL port for ClojureCLR], but
-it's not actively maintained and it doesn't behave like the Clojure nREPL.
-* `cider-nrepl` uses a lot of Java code internally itself.
+* The https://github.com/clojure/clr.tools.nrepl/tree/master/partial-nrepl-nrepl-port[nrepl/nrepl port to ClojureCLR] is not yet working
+* `cider-nrepl` uses a lot of Java code internally itself and would need to be adapted/ported like any
+  other clojure library adapted/ported to ClojureCLR.
 
 Those issues are not insurmountable, but are beyond the scope of our current roadmap.
 If someone would like to tackle them, we'd be happy to provide assistance.

doc/modules/ROOT/pages/platforms/clojureclr.adoc

@@ -2,27 +2,27 @@
 
 == Current Status
 
-ClojureCLR on CIDER is not great due to the lack of a fully-functional nREPL
-server for ClojureCLR. There are currently two options:
+You will get basic CIDER functionality with ClojureCLR. Three nREPL server options:
 
-- https://github.com/clojure/clr.tools.nrepl[clr.tools.nrepl]: A direct (but incomplete) port of the reference Clojure nREPL server.
+- https://github.com/clojure/clr.tools.nrepl[clr.tools.nrepl]: At present port of babashka's nREPL server (https://github.com/babashka/babashka.nrepl[babashka.nrepl]).
+- https://github.com/clojure/clr.tools.nrepl/tree/master/partial-nrepl-nrepl-port[port of nrepl/nrepl]: A non-working, work-in-progress port of nrepl/nrepl, which may
+  ultimately better integrate with CIDER once CIDER's middleware (cider-nrepl) is also adapted/ported.
 - https://github.com/arcadia-unity/Arcadia/blob/master/Editor/NRepl.cs[Arcadia's nREPL]: A basic, but working nREPL implementation in C#.
 
-If you need to use CIDER with ClojureCLR today Arcadia's nREPL is your only usable option. That being said - `clr.tools.nrepl` is a much
-more sophisticated project and ideally we should get it over to the finish line.
+An alternative to CIDER & a nREPL server is inf-clojure with ClojureCLR's stock socket REPL server.
 
 == Usage
 
 NOTE: Contributions welcome!
 
-As `cider-jack-in` doesn't support ClojureCLR projects out-of-the-box currently, you'll need to start an nREPL server externally and
-connect to it with `cider-connect`.
+`cider-jack-in-universal` will jack into a clr.tools.nrepl server as long as a `deps-clr.edn` file
+exists in the project directory, otherwise you may call `cider-jack-in-universal` with prefix
+argument 6, by either `M-6` or `C-u 6` followed by `M-x cider-jack-in-universal`.
 
 == Plans
 
 In an ideal world we'll achieve the following objectives:
 
-- out-of-the-box ClojureCLR support with `cider-jack-in`
 - feature parity between Clojure's nREPL implementation and `clr.tools.nrepl` (the project can use some help)
 - adapting `cider-nrepl` for ClojureCLR (some of its codebase is JVM-specific)
 

lisp/cider.el

@@ -239,6 +239,27 @@ By default we favor the project-specific shadow-cljs over the system-wide."
   :safe #'stringp
   :package-version '(cider . "1.14.0"))
 
+(defcustom cider-clr-command
+  "cljr"
+  "The command used to execute ClojureCLR."
+  :type 'string
+  :safe #'stringp
+  :package-version '(cider . "1.20.0"))
+
+(defcustom cider-clr-parameters
+  "-X clojure.tools.nrepl/start-server!"
+  "Params passed to ClojureCLR to start an nREPL server via `cider-jack-in'."
+  :type 'string
+  :safe #'stringp
+  :package-version '(cider . "1.20.0"))
+
+(defcustom cider-clr-nrepl-sha "a6bf822a5f72ec613f703eaf95420758591f2437"
+  "The version of clr.tools.nrepl injected on jack-in with ClojureCLR."
+  ;; Unlike Maven, GitHub tags are not supported by Clojure
+  :type 'string
+  :safe #'stringp
+  :package-version '(cider . "1.20.0"))
+
 (defcustom cider-jack-in-default nil
   "The default tool to use when doing `cider-jack-in' outside a project.
 This value is consulted when no identifying file types (e.g. project.clj
@@ -254,7 +275,8 @@ explicitly to skip the auto-detection."
                  (const gradle)
                  (const babashka)
                  (const nbb)
-                 (const basilisp))
+                 (const basilisp)
+                 (const clr))
   :safe #'symbolp
   :package-version '(cider . "0.9.0"))
 
@@ -274,6 +296,7 @@ command when there is no ambiguity."
                  (const babashka)
                  (const nbb)
                  (const basilisp)
+                 (const clr)
                  (const :tag "Always ask" nil))
   :safe #'symbolp
   :package-version '(cider . "0.13.0"))
@@ -757,6 +780,30 @@ Does so by concatenating PARAMS and DEPENDENCIES."
      " "
      params)))
 
+(defun cider-clr-jack-in-dependencies (params dependencies &optional command)
+  "Create ClojureCLR clr.core.cli jack-in dependencies.
+Does so by concatenating DEPENDENCIES, and PARAMS into a
+suitable `cljr` invocation and quoting, also accounting for COMMAND if
+provided."
+  (let* ((all-deps (thread-last dependencies
+                                (cider--dedupe-deps)
+                                (seq-map (lambda (dep)
+                                           (if (listp (cadr dep))
+                                               (format "%s {%s}"
+                                                       (car dep)
+                                                       (seq-reduce
+                                                        (lambda (acc v)
+                                                          (concat acc (format " :%s \"%s\" " (car v) (cdr v))))
+                                                        (cadr dep)
+                                                        ""))
+                                             (format "%s {:git/sha \"%s\"}" (car dep) (cadr dep)))))))
+         (deps (format "{:deps {%s}}"
+                       (string-join all-deps " ")))
+         (deps-quoted (cider--shell-quote-argument deps command)))
+    (format "-Sdeps %s %s"
+            deps-quoted
+            (if params (format " %s" params) ""))))
+
 (defun cider-add-clojure-dependencies-maybe (dependencies)
   "Return DEPENDENCIES with an added Clojure dependency if requested.
 See also `cider-jack-in-auto-inject-clojure'."
@@ -816,6 +863,12 @@ COMMAND is the resolved jack-in command, used to handle PowerShell quoting."
    (cider-add-clojure-dependencies-maybe cider-jack-in-dependencies)
    (cider-jack-in-normalized-nrepl-middlewares)))
 
+(defun cider--clr-inject-deps (params _project-type _command)
+  "Inject CIDER deps into PARAMS for a Gradle project."
+  (cider-clr-jack-in-dependencies
+   params
+   `(("io.github.clojure/clr.tools.nrepl" ,cider-clr-nrepl-sha))))
+
 (defun cider-inject-jack-in-dependencies (params project-type &optional command)
   "Return PARAMS with injected REPL dependencies for PROJECT-TYPE.
 Looks up the tool's :inject-fn in `cider-jack-in-tools' and calls it with
@@ -881,6 +934,16 @@ with its nREPL middleware and dependencies."
                              :project-files '("basilisp.edn")
                              :universal-prefix-arg 5)
 
+(cider-register-jack-in-tool 'clr
+                             :command-var 'cider-clr-command
+                             :params-var 'cider-clr-parameters
+                             :project-files '("deps-clr.edn")
+                             :resolver #'cider--resolve-prefix-command
+                             :universal-prefix-arg 6
+                             :jack-in-type 'clj
+                             :cljs-repl-type 'nbb
+                             :inject-fn #'cider--clr-inject-deps)
+
 
 ;;; ClojureScript REPL creation
 

test/integration/integration-tests.el

@@ -183,6 +183,68 @@ If CLI-COMMAND is nil, then use the default."
                 (cider-itu-poll-until (not (eq (process-status nrepl-proc) 'run)) 5)
                 (expect (member (process-status nrepl-proc) '(exit signal))))))))))
 
+  (it "to clr"
+    (with-cider-test-sandbox
+      (with-temp-dir temp-dir
+        ;; Create a project in temp dir
+        (let* ((project-dir temp-dir)
+               (clr-edn (expand-file-name "deps-clr.edn" project-dir)))
+          (write-region "{}" nil clr-edn)
+
+          (with-temp-buffer
+            ;; set default directory to temp project
+            (setq-local default-directory project-dir)
+
+            (let* (;; Get a gv reference so as to poll if the client has
+                   ;; connected to the nREPL server.
+                   (client-is-connected* (cider-itu-nrepl-client-connected-ref-make!))
+
+                   ;; jack in and get repl buffer
+                   ;;
+                   ;; The numerical prefix arg for `clr` in
+                   ;; `cider-jack-in-universal-options' is 6.
+                   (nrepl-proc (cider-jack-in-universal 6))
+                   (nrepl-buf (process-buffer nrepl-proc)))
+
+              ;; wait until the client has successfully connected to the
+              ;; nREPL server.
+              (cider-itu-poll-until (eq (gv-deref client-is-connected*) 'connected) 20)
+
+              ;; give it some time to setup the clj REPL
+              (cider-itu-poll-until (cider-repls 'clj nil) 60)
+
+              ;; send command to the REPL, and push stdout/stderr to
+              ;; corresponding eval-xxx variables.
+              (let ((repl-buffer (cider-current-repl))
+                    (eval-err '())
+                    (eval-out '()))
+                (expect repl-buffer :not :to-be nil)
+
+                ;; send command to the REPL
+                (cider-interactive-eval
+                 ;; ask REPL to return a string that uniquely identifies it.
+                 "(print :clr? (some? (. RuntimeInformation FrameworkDescription)))"
+                 (lambda (return)
+                   (nrepl-dbind-response
+                       return
+                       (out err)
+                     (when err (push err eval-err))
+                     (when out (push out eval-out)))) )
+
+                ;; wait for a response to come back.
+                (cider-itu-poll-until (or eval-err eval-out) 20)
+
+                ;; ensure there are no errors and response is as expected.
+                (expect eval-err :to-equal '())
+                (expect eval-out :to-equal '(":clr? true"))
+
+                ;; exit the REPL.
+                (cider-quit repl-buffer)
+
+                ;; wait for the REPL to exit
+                (cider-itu-poll-until (not (eq (process-status nrepl-proc) 'run)) 5)
+                (expect (member (process-status nrepl-proc) '(exit signal))))))))))
+
   (it "to Basilisp"
     (with-cider-test-sandbox
       (with-temp-dir temp-dir