further attempts to get lsp working with jdtls

lua/languages.lua

@@ -1,8 +1,27 @@
 local lsp = require'lspconfig'
 local omnisharp = "/usr/bin/omnisharp"
-local jdtls = "/home/atomic/jdtls/launch"
 
 lsp.clangd.setup{}
 lsp.rust_analyzer.setup{}
 lsp.omnisharp.setup{cmd={omnisharp, "--languageserver", "--hostPID", tostring(vim.fn.getpid())}}
-lsp.jdtls.setup{cmd={jdtls}}
+
+local workspace_dir = vim.fn.fnamemodify(vim.fn.getcwd(), ':p:h:t')
+local config = {
+    cmd = {
+        "/usr/bin/java",
+        "-Declipse.application=org.eclipse.jdt.ls.core.id1",
+        "-Dosgi.bundles.defaultStartLevel=4",
+        "-Declipse.product=org.eclipse.jdt.ls.core.product",
+        "-Dlog.level=ALL",
+        "-noverify",
+        "-Xmx1G",
+        "-jar", "/home/atomic/jdtls/plugins/org.eclipse.equinox.launcher_1.6.400.v20210924-0641.jar",
+        "-configuration", "/home/atomic/jdtls/config_linux",
+        "-data", "/home/atomic/workspaces" .. workspace_dir,
+        "--add-modules=ALL-SYSTEM",
+        "--add-opens java.base/java.util=ALL-UNNAMED",
+        "--add-opens java.base/java.lang=ALL-UNNAMED",
+    },
+}
+require'jdtls.setup'.add_commands()
+require'jdtls'.start_or_attach(config)