nixos: gen 52 @ lilac — 2026-09-18 20:58 26.05.20260814.02e0898 (Yarara) -----

home/jashton.nix

@@ -37,7 +37,7 @@ in
     GTK_IM_MODULE = "wayland";               # Forces GTK apps to use Wayland text-input protocols
     QT_IM_MODULE = "wayland";                # Forces Qt apps to use Wayland text-input protocols
     TEXT_INPUT_PRESENT = "1";                # Explicitly signals virtual keyboard capability to the shell
-    JAVA_HOME = "{pkgs.jdk21}";
+    JAVA_HOME = "${pkgs.jdk21}";
   };
   
   home.packages = with pkgs; [
@@ -127,17 +127,28 @@ in
         echo "jtest: no junit-platform-console-standalone jar in ~/dev/jars" >&2
         exit 1
       fi
+
+      # --debug suspends the test JVM on start and waits for nvim-dap to attach
+      # on :5005 (see the "Attach to jtest" config in nvim.nix), so breakpoints
+      # set before running jtest --debug are hit from the very first test.
+      DEBUG_ARGS=()
+      if [ "''${1:-}" = "--debug" ]; then
+        DEBUG_ARGS=(-agentlib:jdwp=transport=dt_socket,server=y,suspend=y,address=*:5005)
+        shift
+        echo "jtest: waiting for debugger to attach on 127.0.0.1:5005..." >&2
+      fi
+
       ROOT="$(jroot)"
       jbuild
       cd "$ROOT"
       if [ $# -eq 0 ]; then
-        exec java -jar "$JUNIT" execute --class-path "bin:lib/*" --scan-class-path --details=tree
+        exec java "''${DEBUG_ARGS[@]}" -jar "$JUNIT" execute --class-path "bin:lib/*" --scan-class-path --details=tree
       fi
       ARGS=""
       for pkg in "$@"; do
         ARGS="$ARGS --select-package $pkg"
       done
-      exec java -jar "$JUNIT" execute --class-path "bin:lib/*" $ARGS --details=tree
+      exec java "''${DEBUG_ARGS[@]}" -jar "$JUNIT" execute --class-path "bin:lib/*" $ARGS --details=tree
     '')
 
     (pkgs.writeShellScriptBin "fkill" ''

home/programs/nvim.nix

@@ -234,6 +234,17 @@ in
       dapui.setup()
       require("nvim-dap-virtual-text").setup()
 
+      -- `jtest --debug` suspends the test JVM waiting on :5005; this lets
+      -- <leader>dc attach to it directly from the config picker.
+      dap.configurations.java = dap.configurations.java or {}
+      table.insert(dap.configurations.java, {
+        type = "java",
+        request = "attach",
+        name = "Attach to jtest (:5005)",
+        hostName = "127.0.0.1",
+        port = 5005,
+      })
+
       dap.listeners.after.event_initialized["dapui"] = function() dapui.open() end
       dap.listeners.before.event_terminated["dapui"] = function() dapui.close() end
       dap.listeners.before.event_exited["dapui"] = function() dapui.close() end