refactor!(java): remove +eclim and +meghanada

BREAKING CHANGE: This removes eclim.el and meghanada.el support from the
Java module. Both of these projects are unmaintained and recommend the
user switch to lsp-java, which is already offered by the module's +lsp
flag.

Fix: #8360

modules/lang/java/+eclim.el

@@ -1,50 +0,0 @@
-;;; lang/java/+eclim.el -*- lexical-binding: t; -*-
-;;;###if (modulep! +eclim)
-
-;; NOTE This submodule is incomplete
-
-(use-package! eclim
-  :hook (java-mode . eclim-mode)
-  :config
-  (set-lookup-handlers! 'java-mode
-    :definition #'eclim-java-find-declaration
-    :references #'eclim-java-find-references
-    :documentation #'eclim-java-show-documentation-for-current-element)
-
-  (require 'eclimd)
-  (setq help-at-pt-display-when-idle t
-        help-at-pt-timer-delay 0.1)
-  (help-at-pt-set-timer)
-
-  (map! :localleader
-        :map java-mode-map
-        (:prefix ("r" . "refactor")
-          "gc" #'eclim-java-constructor
-          "gg" #'eclim-java-generate-getter-and-setter
-          "oi" #'eclim-java-import-organize
-          "f"  #'eclim-java-format
-          "r"  #'eclim-java-refactor-rename-symbol-at-point)
-        (:prefix ("h" . "help")
-          "."  #'eclim-java-show-documentation-for-current-element
-          "r"  #'eclim-java-find-references
-          "c"  #'eclim-java-call-hierarchy
-          "h"  #'eclim-java-hierarchy
-          "p"  #'eclim-problems
-          "r"  #'meghanada-reference
-          "t"  #'meghanada-typeinfo)
-        (:prefix ("b" . "build")
-          "b"  #'eclim-project-build
-          "c"  #'eclim-project-create
-          "d"  #'eclim-project-delete
-          "g"  #'eclim-project-goto
-          "i"  #'eclim-project-import
-          "k"  #'eclim-project-close
-          "o"  #'eclim-project-open
-          "u"  #'eclim-project-update)))
-
-
-(use-package! company-emacs-eclim
-  :when (modulep! :completion company)
-  :after java-mode
-  :config
-  (set-company-backend! 'java-mode '(company-emacs-eclim)))

modules/lang/java/+meghanada.el

@@ -1,39 +0,0 @@
-;;; lang/java/+meghanada.el -*- lexical-binding: t; -*-
-;;;###if (modulep! +meghanada)
-
-(use-package! meghanada
-  :hook (java-mode-local-vars . meghanada-mode)
-  :init
-  (setq meghanada-server-install-dir (concat doom-data-dir "meghanada-server/")
-        meghanada-use-company (modulep! :completion company)
-        meghanada-use-flycheck (or (modulep! :checkers syntax +flymake)
-                                   (not (modulep! :checkers syntax)))
-        meghanada-use-eldoc t
-        meghanada-use-auto-start t)
-
-  :config
-  (set-lookup-handlers! 'java-mode
-    :definition #'meghanada-jump-declaration
-    :references #'meghanada-reference)
-
-  (defadvice! +java-meghanada-fail-gracefully-a (fn &rest args)
-    "Toggle `meghanada-mode'. Fail gracefully if java is unavailable."
-    :around #'meghanada-mode
-    (if (executable-find meghanada-java-path)
-        (apply fn args)
-      (message "Can't find %S binary. Is java installed? Aborting `meghanada-mode'."
-               meghanada-java-path)))
-
-  (map! :localleader
-        :map java-mode-map
-        (:prefix ("r" . "refactor")
-          "ia" #'meghanada-import-all
-          "io" #'meghanada-optimize-import
-          "l"  #'meghanada-local-variable
-          "f"  #'meghanada-code-beautify)
-        (:prefix ("h" . "help")
-          "r"  #'meghanada-reference
-          "t"  #'meghanada-typeinfo)
-        (:prefix ("b" . "build")
-          "f"  #'meghanada-compile-file
-          "p"  #'meghanada-compile-project)))

modules/lang/java/README.org

@@ -12,10 +12,8 @@ This module adds [[https://www.java.com][Java]] support to Doom Emacs, including
 
 ** Module flags
 - +lsp ::
-  Enable LSP support for ~java-mode~. Requires [[doom-module::tools lsp]] and a langserver
-  (supports eclipse.jdt.ls). *Incompatible with [[doom-module:+meghanada]].*
-- +meghanada ::
-  Enable [[doom-package:meghanada-mode]]. *Incompatible with [[doom-module:+lsp]].*
+  Enable LSP support for ~java-mode~. Requires [[doom-module::tools lsp]] and a
+  langserver (supports eclipse.jdt.ls).
 - +tree-sitter ::
   Leverages tree-sitter for better syntax highlighting and structural text
   editing. Requires [[doom-module::tools tree-sitter]].
@@ -23,10 +21,6 @@ This module adds [[https://www.java.com][Java]] support to Doom Emacs, including
 ** Packages
 - [[doom-package:android-mode]]
 - [[doom-package:groovy-mode]]
-- [[doom-package:meghanada]] if [[doom-module:+meghanada]]
-- if [[doom-module:+eclim]]
-  - [[doom-package:eclim]]
-  - [[doom-package:company-emacs-eclim]] if [[doom-module::completion company]]
 - if [[doom-module:+lsp]] and not [[doom-module::tools lsp +eglot]]
   - [[doom-package:lsp-java]]
 
@@ -99,7 +93,6 @@ And then run ~$ direnv allow .~ in the project directory. The [[doom-module::too
 module will automatically source this environment before activating LSP servers.
 
 ** Formatter
-
 [[doom-module::editor format]] uses [[https://github.com/google/google-java-format][google-java-format]] to handle formatting.
 
 To install, grab the latest =all-deps.jar= release from the above, put it
@@ -134,24 +127,6 @@ According to [[https://github.com/emacs-lsp/lsp-java]], you get:
 - Project explorer integration ([[doom-package:treemacs]])
 - Integration with [[https://start.spring.io/][Spring Initializr]]
 
-** =+meghanada= features
-According to [[https://github.com/mopemope/meghanada-emacs/]], you get:
-- Auto-update server module
-- [[https://gradle.org/][Gradle]] and [[http://maven.apache.org/][Maven]] and Eclipse project support
-- No need build tool's plugin
-- Run build tool task
-- Compile your project
-- Syntax check and analyze java source ([[doom-package:flycheck-meghanada]])
-- Support =Generic Types=
-- Code completion with [[doom-package:company-mode]] ([[doom-package:company-meghanada]])
-- Optimize import and sort
-- Jump declaration
-- Run [[http://www.junit.org/][JUnit]] test (include test runner)
-- Diagnostic reporting with [[doom-package:flycheck]] ([[doom-package:flycheck-meghanada]])
-- Show symbol's type info with [[doom-package:eldoc]]
-- Search references
-- Full-featured text search
-
 * TODO Configuration
 #+begin_quote
  󱌣 /This module's configuration documentation is incomplete./ [[doom-contrib-module:][Complete it?]]

modules/lang/java/config.el

@@ -26,9 +26,9 @@ If the depth is 2, the first two directories are removed: net.lissner.game.")
 
 (add-hook 'java-mode-hook #'rainbow-delimiters-mode)
 
-(cond ((modulep! +meghanada) (load! "+meghanada"))
-      ((modulep! :tools lsp +eglot))
-      ((modulep! +lsp)       (load! "+lsp")))
+(when (and (modulep! +lsp)
+           (modulep! :tools lsp -eglot))
+  (load! "+lsp"))
 
 (when (modulep! +tree-sitter)
   (add-hook 'java-mode-local-vars-hook #'tree-sitter! 'append))

modules/lang/java/packages.el

@@ -4,14 +4,6 @@
 (package! android-mode :pin "67f7c0d7d37605efc7f055b76d731556861c3eb9")
 (package! groovy-mode :pin "7b8520b2e2d3ab1d62b35c426e17ac25ed0120bb")
 
-(when (modulep! +meghanada)
-  (package! meghanada :pin "fb29746e442e3d7b903759d15977d142a4bf2131"))
-
-(when (modulep! +eclim)
-  (package! eclim :pin "222ddd48fcf0ee01592dec77c58e0cf3f2ea1100")
-  (when (modulep! :completion company)
-    (package! company-emacs-eclim :pin "222ddd48fcf0ee01592dec77c58e0cf3f2ea1100")))
-
 (when (modulep! +lsp)
   (unless (modulep! :tools lsp +eglot)
     ;; HACK: lsp-java depends on lsp-treemacs without declaring it as a