Fix eglot-java contact settings, and add ability to set java agent

emacs/.emacs.d/config/init-ide.el

@@ -52,20 +52,28 @@
                `(html-web-mode . ,(eglot-alternatives
                                    '(("vscode-html-language-server" "--stdio")
                                      ("html-languageserver" "--stdio")))))
+  (defvar eglot-java-java-agent nil
+    "Java agent JVM arg for eglot JDTLS.")
   ;; Custom eglot java server for deeper customization
   (defclass eglot-java-server (eglot-lsp-server) ()
     :documentation "Eglot integration with JDTLS.")
-  (add-to-list 'eglot-server-programs
-               '(java-mode .
-                 (eglot-java-server .
-                  ("jdtls" :initializationOptions
-                   (:extendedClientCapabilities
-                    (:classFileContentsSupport t)
-                    :runtimes [(:name "JavaSE-11"
-                                :path "/Library/Java/JavaVirtualMachines/amazon-corretto-11.jdk")
-                               (:name "JavaSE-17"
-                                :path "/Library/Java/JavaVirtualMachines/amazon-corretto-17.jdk"
-                                :default t)])))))
+  (defun eglot-java-contact (&optional interactive)
+    `(eglot-java-server .
+      ("jdtls" ,(if (s-blank? eglot-java-java-agent)
+                    ""
+                  (format "--jvm-arg=-javaagent:%s" eglot-java-java-agent))
+       :initializationOptions
+       (:extendedClientCapabilities (:classFileContentsSupport t)
+        :settings
+        (:java
+         (:home "/Library/Java/JavaVirtualMachines/amazon-corretto-17.jdk/Contents/Home"
+          :configuration
+          (:runtimes [(:name "JavaSE-11"
+                       :path "/Library/Java/JavaVirtualMachines/amazon-corretto-11.jdk")
+                      (:name "JavaSE-17"
+                       :path "/Library/Java/JavaVirtualMachines/amazon-corretto-17.jdk"
+                       :default t)])))))))
+  (add-to-list 'eglot-server-programs '(java-mode . eglot-java-contact))
   ;; Fix JDTLS's weird handling of workspaceEdit
   (cl-defmethod eglot-execute-command
     ((_server eglot-java-server) (_cmd (eql java.apply.workspaceEdit)) arguments)

emacs/.emacs.d/config/init-lib.el

@@ -30,23 +30,18 @@
               deferred:timeout
               deferred:process))
 
-(use-package s
-  :defer t)
+(use-package s)
 
-(use-package dash
-  :defer t)
+(use-package dash)
 
-(use-package dash-functional
-  :defer t)
+(use-package dash-functional)
 
-(use-package f
-  :defer t)
+(use-package f)
 
 (use-package request
   :commands request)
 
-(use-package ht
-  :defer t)
+(use-package ht)
 
 ;; Elisp utilities
 (defun make-process-sentinel (success err)