unity debugging

unity-debug/install.sh

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+#!/usr/bin/env bash
+# Installs Unity's MIT-licensed vscode-unity-debug adapter for nvim-dap and
+# patches it to find editors however they were launched (see patch.cs).
+# Re-runnable: always re-extracts and re-patches from the pristine .vsix.
+set -euo pipefail
+
+VERSION=3.0.1
+HERE="$(cd "$(dirname "${BASH_SOURCE[0]}")" && pwd)"
+DEST="${1:-${XDG_DATA_HOME:-$HOME/.local/share}/nvim/unity-debug}"
+BIN="$DEST/extension/bin"
+
+for cmd in curl unzip mono mcs; do
+    command -v "$cmd" >/dev/null || { echo "unity-debug install: missing '$cmd'" >&2; exit 1; }
+done
+
+mkdir -p "$DEST"
+VSIX="$DEST/unity-debug-$VERSION.vsix"
+[ -f "$VSIX" ] || curl -fsSL -o "$VSIX" \
+    "https://github.com/Unity-Technologies/vscode-unity-debug/releases/download/Version-$VERSION/unity-debug-$VERSION.vsix"
+rm -rf "$DEST/extension"
+unzip -qo "$VSIX" -d "$DEST"
+
+TMP="$(mktemp -d)"
+trap 'rm -rf "$TMP"' EXIT
+mcs "$HERE/patch.cs" -r:"$BIN/Mono.Cecil.dll" -out:"$TMP/patch.exe"
+cp "$BIN/UnityDebug.exe" "$BIN/UnityDebug.exe.orig"
+MONO_PATH="$BIN" mono "$TMP/patch.exe" "$BIN/UnityDebug.exe.orig" "$TMP/UnityDebug.exe"
+cp "$TMP/UnityDebug.exe" "$BIN/UnityDebug.exe"
+echo "unity-debug installed and patched in $DEST"

unity-debug/patch.cs

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+// Patches vscode-unity-debug's UnityProcessDiscovery.GetUnityEditorProcesses to
+// prefix-match process names instead of requiring an exact "Unity"/"Unity Editor".
+// The comparison is OrdinalIgnoreCase, so the "Unity" prefix then matches editors
+// launched directly ("Unity") and via Unity Hub ("unityhub-unity-editor-<version>").
+// Extra matches (UnityPackageManager etc.) are fine: with a config name containing
+// "Editor", the adapter picks the editor by process_id from EditorInstance.json.
+using System; using System.Linq; using Mono.Cecil;
+class Patch {
+    static int Main(string[] a) {
+        var asm = AssemblyDefinition.ReadAssembly(a[0]);
+        var m = asm.MainModule.Types.SelectMany(t => t.Methods).Single(x => x.Name == "GetUnityEditorProcesses");
+        var startsWith = asm.MainModule.ImportReference(typeof(string).GetMethod("StartsWith", new[] { typeof(string), typeof(StringComparison) }));
+        int c = 0;
+        foreach (var i in m.Body.Instructions)
+            if (i.Operand is MethodReference r && r.DeclaringType.FullName == "System.String" && r.Name == "Equals" && r.Parameters.Count == 2) { i.Operand = startsWith; c++; }
+        if (c != 1) { Console.Error.WriteLine($"expected 1 string.Equals call in {m.Name}, found {c}"); return 1; }
+        asm.Write(a[1]);
+        return 0;
+    }
+}