Eager macro-expansion failure

[thoradam]

When I open a Scala file and lsp-metals-treeview initialises I get an Emacs error: "Eager macro-expansion failure: %S" (wrong-number-of-arguments (1 . 1) 0

I'm using Emacs 29. Backtrace:

Debugger entered--Lisp error: (error "Eager macro-expansion failure: (wrong-number-of-ar...")
  error("Eager macro-expansion failure: %S" (wrong-number-of-arguments (1 . 1) 0))
  internal-macroexpand-for-load((defalias 'lsp-metals-treeview--show-view #'(lambda (workspace view-id position) "Show or create the side window and treeview.\nThe w..." (let ((buffer-name (lsp-metals-treeview--buffer-name workspace ...))) (-if-let (buffer (get-buffer buffer-name)) (with-selected-window (display-buffer-in-side-window buffer position) (lsp-metals-treeview--log "Refreshing tree %s" view-id) (treemacs-update-node ... t) (set-window-dedicated-p ... t) (set-window-parameter ... ... t)) (let* (... ...) (with-lsp-workspace workspace ...)))))) t)
  load-with-code-conversion("/Users/thoradam/.emacs.d/elpa/lsp-metals-20220715...." "/Users/thoradam/.emacs.d/elpa/lsp-metals-20220715...." nil t)
  require(lsp-metals-treeview)
  load-with-code-conversion("/Users/thoradam/.emacs.d/elpa/lsp-metals-20220715...." "/Users/thoradam/.emacs.d/elpa/lsp-metals-20220715...." t t)
  #<subr F616e6f6e796d6f75732d6c616d626461_anonymous_lambda_340>(lsp-metals)
  mapc(#<subr F616e6f6e796d6f75732d6c616d626461_anonymous_lambda_340> (ccls lsp-actionscript lsp-ada lsp-angular lsp-ansible lsp-bash lsp-beancount lsp-clangd lsp-clojure lsp-cmake lsp-crystal lsp-csharp lsp-css lsp-d lsp-dart lsp-dhall lsp-docker lsp-dockerfile lsp-elm lsp-elixir lsp-emmet lsp-erlang lsp-eslint lsp-fortran lsp-fsharp lsp-gdscript lsp-go lsp-gleam lsp-graphql lsp-hack lsp-grammarly lsp-groovy lsp-haskell lsp-haxe lsp-idris lsp-java lsp-javascript lsp-json lsp-kotlin lsp-latex lsp-ltex lsp-lua lsp-markdown lsp-marksman lsp-mint lsp-nginx lsp-nim lsp-nix lsp-magik lsp-metals ...))
  seq-do(#<subr F616e6f6e796d6f75732d6c616d626461_anonymous_lambda_340> (ccls lsp-actionscript lsp-ada lsp-angular lsp-ansible lsp-bash lsp-beancount lsp-clangd lsp-clojure lsp-cmake lsp-crystal lsp-csharp lsp-css lsp-d lsp-dart lsp-dhall lsp-docker lsp-dockerfile lsp-elm lsp-elixir lsp-emmet lsp-erlang lsp-eslint lsp-fortran lsp-fsharp lsp-gdscript lsp-go lsp-gleam lsp-graphql lsp-hack lsp-grammarly lsp-groovy lsp-haskell lsp-haxe lsp-idris lsp-java lsp-javascript lsp-json lsp-kotlin lsp-latex lsp-ltex lsp-lua lsp-markdown lsp-marksman lsp-mint lsp-nginx lsp-nim lsp-nix lsp-magik lsp-metals ...))
  lsp--require-packages()
  lsp()
  run-hooks(change-major-mode-after-body-hook prog-mode-hook scala-mode-hook)
  apply(run-hooks (change-major-mode-after-body-hook prog-mode-hook scala-mode-hook))
  run-mode-hooks(scala-mode-hook)
  scala-mode()
  set-auto-mode-0(scala-mode nil)
  set-auto-mode--apply-alist((("\\.\\(?:md\\|markdown\\|mkd\\|mdown\\|mkdn\\|mdwn\\)\\'" . markdown-mode) ("\\.\\(scala\\|sbt\\|worksheet\\.sc\\)\\'" . scala-mode) ("\\.gpg\\(~\\|\\.~[0-9]+~\\)?\\'" nil epa-file) ("\\.elc\\'" . elisp-byte-code-mode) ("\\.zst\\'" nil jka-compr) ("\\.dz\\'" nil jka-compr) ("\\.xz\\'" nil jka-compr) ("\\.lzma\\'" nil jka-compr) ("\\.lz\\'" nil jka-compr) ("\\.g?z\\'" nil jka-compr) ("\\.bz2\\'" nil jka-compr) ("\\.Z\\'" nil jka-compr) ("\\.vr[hi]?\\'" . vera-mode) ("\\(?:\\.\\(?:rbw?\\|ru\\|rake\\|thor\\|jbuilder\\|rabl\\|ge..." . ruby-mode) ("\\.re?st\\'" . rst-mode) ("\\.py[iw]?\\'" . python-mode) ("\\.m\\'" . octave-maybe-mode) ("\\.less\\'" . less-css-mode) ("\\.scss\\'" . scss-mode) ("\\.awk\\'" . awk-mode) ("\\.\\(u?lpc\\|pike\\|pmod\\(\\.in\\)?\\)\\'" . pike-mode) ("\\.idl\\'" . idl-mode) ("\\.java\\'" . java-mode) ("\\.m\\'" . objc-mode) ("\\.ii\\'" . c++-mode) ("\\.i\\'" . c-mode) ("\\.lex\\'" . c-mode) ("\\.y\\(acc\\)?\\'" . c-mode) ("\\.h\\'" . c-or-c++-mode) ("\\.c\\'" . c-mode) ("\\.\\(CC?\\|HH?\\)\\'" . c++-mode) ("\\.[ch]\\(pp\\|xx\\|\\+\\+\\)\\'" . c++-mode) ("\\.\\(cc\\|hh\\)\\'" . c++-mode) ("\\.\\(bat\\|cmd\\)\\'" . bat-mode) ("\\.[sx]?html?\\(\\.[a-zA-Z_]+\\)?\\'" . mhtml-mode) ("\\.svgz?\\'" . image-mode) ("\\.svgz?\\'" . xml-mode) ("\\.x[bp]m\\'" . image-mode) ("\\.x[bp]m\\'" . c-mode) ("\\.p[bpgn]m\\'" . image-mode) ("\\.tiff?\\'" . image-mode) ("\\.gif\\'" . image-mode) ("\\.png\\'" . image-mode) ("\\.jpe?g\\'" . image-mode) ("\\.webp\\'" . image-mode) ("\\.te?xt\\'" . text-mode) ("\\.[tT]e[xX]\\'" . tex-mode) ("\\.ins\\'" . tex-mode) ("\\.ltx\\'" . latex-mode) ("\\.dtx\\'" . doctex-mode) ...) nil nil)
  set-auto-mode()
  normal-mode(t)
  after-find-file(nil t)
  find-file-noselect-1(#<buffer PubsubPublisher.scala> "~/Developer/indo/monorepodir/monorepo/src/main/sca..." nil nil "~/Developer/indo/monorepodir/monorepo/src/main/sca..." (341228 16777229))
  find-file-noselect("~/Developer/indo/monorepodir/monorepo/src/main/sca..." nil nil t)
  find-file("~/Developer/indo/monorepodir/monorepo/src/main/sca..." t)
  funcall-interactively(find-file "~/Developer/indo/monorepodir/monorepo/src/main/sca..." t)
  command-execute(find-file)

[VitalyAnkh]

I met the same error and I'm also on Emacs 29. It seems some upstream changes broke some function in lsp-metals-treeview.el.

@thoradam Which commit of Emacs 29 are you using (and has this problem)? And which commit is good? I could do a git bisect to find which commit is responsible for this problem.

[thoradam]

@VitalyAnkh I installed Emacs from the Homebrew emacs-plus formula:

    "tap": "d12frosted/emacs-plus",
    "tap_git_head": "4b34ed7402a4f3e1f212b2c6fa0851f4b59e247c",

Unfortunately this is my first time using Emacs with lsp-metals so I don't have a working commit for reference.

[yyoncho]

Treeview is broken after breaking the change in treemacs. It should be disabled until this is fixed.

[mtk]

what is the status of this? what is the recommended work around until fixed (one which lets you continue to use metals)?

[thoradam]

This patch for the treemacs package works for me:

diff --git a/src/elisp/treemacs-treelib.el b/src/elisp/treemacs-treelib.el
index d30c8c6..9825fbf 100644
--- a/src/elisp/treemacs-treelib.el
+++ b/src/elisp/treemacs-treelib.el
@@ -1018,7 +1018,7 @@ ARG: Prefix Arg"
    :post-close-action
    (treemacs-on-collapse (treemacs-button-get btn :path))))
 
-(cl-defmacro treemacs-initialize
+(cl-defmacro treemacs-initialize-ext
     (extension
      &key
      (with-expand-depth 0)

It seems that lsp-metals wants to call the other treemacs-initialize so renaming this one to something else fixes the issues at least for lsp-metals.

[kurnevsky]

Does it stop work completely? For me lsp-metals works fine after this error happens.

[jcs090218]

It stopped working in the latest Emacs (snapshot) due to the commit https://github.com/emacs-mirror/emacs/commit/80cf13a3d27d8a967feafeec32fd130529635592

eager expansions is now error not warning.

Related issue: https://github.com/emacs-lsp/lsp-mode/issues/3738