diff --git a/README.md b/README.md
index 0432463..0a65a90 100644
--- a/README.md
+++ b/README.md
@@ -29,7 +29,10 @@ mcpp build                  # 自动拉取源码 + 构建
 | 包名 | 版本 | 简介 |
 |------|------|------|
 | `ftxui` | 6.1.9 | C++ 函数式终端 UI 库(screen + dom + component) |
+| `glfw` | 3.4 | GLFW 窗口与输入库(null platform 后端源码构建) |
 | `gtest` | 1.15.2 | Google Test 测试框架 |
+| `imgui` | v1.92.8 | Dear ImGui immediate-mode GUI 核心源码 |
+| `opengl` | 2026.05.31 | Khronos OpenGL API 头文件 |
 | `mbedtls` | 3.6.1 | TLS/加密库(纯 C) |
 | `lua` | 5.4.7 | Lua 脚本语言(纯 C 嵌入式库) |
 | `zlib` | v1.3.2 | DEFLATE 压缩库 |
@@ -56,6 +59,9 @@ libarchive
   ├── lz4
   ├── zstd
   └── xz                         ← 压缩后端自动传递
+
+glfw
+  └── opengl                      ← GLFW/glfw3.h 所需 OpenGL 头文件
 ```
 
 mcpp 0.0.3+ 的 transitive walker 自动沿链路传播头文件和依赖,消费者只需声明直接依赖。
diff --git a/pkgs/c/compat.glfw.lua b/pkgs/c/compat.glfw.lua
new file mode 100644
index 0000000..132fd63
--- /dev/null
+++ b/pkgs/c/compat.glfw.lua
@@ -0,0 +1,48 @@
+package = {
+    spec        = "1",
+    namespace   = "compat",
+    name        = "compat.glfw",
+    description = "GLFW windowing and input library built from source with the null platform backend",
+    licenses    = {"Zlib"},
+    repo        = "https://github.com/glfw/glfw",
+    type        = "package",
+
+    xpm = {
+        linux = {
+            ["3.4"] = {
+                url    = "https://github.com/glfw/glfw/archive/refs/tags/3.4.tar.gz",
+                sha256 = "c038d34200234d071fae9345bc455e4a8f2f544ab60150765d7704e08f3dac01",
+            },
+        },
+    },
+
+    mcpp = {
+        language     = "c++23",
+        import_std   = false,
+        c_standard   = "c11",
+        cflags       = { "-D_DEFAULT_SOURCE" },
+        include_dirs = {"*/include", "*/src"},
+        sources = {
+            "*/src/context.c",
+            "*/src/init.c",
+            "*/src/input.c",
+            "*/src/monitor.c",
+            "*/src/platform.c",
+            "*/src/vulkan.c",
+            "*/src/window.c",
+            "*/src/egl_context.c",
+            "*/src/osmesa_context.c",
+            "*/src/null_init.c",
+            "*/src/null_monitor.c",
+            "*/src/null_window.c",
+            "*/src/null_joystick.c",
+            "*/src/posix_time.c",
+            "*/src/posix_thread.c",
+            "*/src/posix_module.c",
+        },
+        targets = { ["glfw"] = { kind = "lib" } },
+        deps    = {
+            ["compat.opengl"] = "2026.05.31",
+        },
+    },
+}
diff --git a/pkgs/c/compat.imgui.lua b/pkgs/c/compat.imgui.lua
new file mode 100644
index 0000000..b64ad81
--- /dev/null
+++ b/pkgs/c/compat.imgui.lua
@@ -0,0 +1,44 @@
+package = {
+    spec        = "1",
+    namespace   = "compat",
+    name        = "compat.imgui",
+    description = "Dear ImGui immediate-mode GUI library core sources",
+    licenses    = {"MIT"},
+    repo        = "https://github.com/ocornut/imgui",
+    type        = "package",
+
+    xpm = {
+        linux = {
+            ["v1.92.8"] = {
+                url    = "https://github.com/ocornut/imgui/archive/refs/tags/v1.92.8.tar.gz",
+                sha256 = "fecb33d33930e12ff53a34064e9d3a06c8f7c3e04408f14cd36c80e3faac863b",
+            },
+        },
+        macosx = {
+            ["v1.92.8"] = {
+                url    = "https://github.com/ocornut/imgui/archive/refs/tags/v1.92.8.tar.gz",
+                sha256 = "fecb33d33930e12ff53a34064e9d3a06c8f7c3e04408f14cd36c80e3faac863b",
+            },
+        },
+        windows = {
+            ["v1.92.8"] = {
+                url    = "https://github.com/ocornut/imgui/archive/refs/tags/v1.92.8.tar.gz",
+                sha256 = "fecb33d33930e12ff53a34064e9d3a06c8f7c3e04408f14cd36c80e3faac863b",
+            },
+        },
+    },
+
+    mcpp = {
+        language     = "c++23",
+        import_std   = false,
+        include_dirs = {"*", "*/backends"},
+        sources = {
+            "*/imgui.cpp",
+            "*/imgui_draw.cpp",
+            "*/imgui_tables.cpp",
+            "*/imgui_widgets.cpp",
+        },
+        targets = { ["imgui"] = { kind = "lib" } },
+        deps    = {},
+    },
+}
diff --git a/pkgs/c/compat.opengl.lua b/pkgs/c/compat.opengl.lua
new file mode 100644
index 0000000..bbfcadd
--- /dev/null
+++ b/pkgs/c/compat.opengl.lua
@@ -0,0 +1,44 @@
+package = {
+    spec        = "1",
+    namespace   = "compat",
+    name        = "compat.opengl",
+    description = "Khronos OpenGL API headers for mcpp packages",
+    licenses    = {"MIT"},
+    repo        = "https://github.com/KhronosGroup/OpenGL-Registry",
+    type        = "package",
+
+    xpm = {
+        linux = {
+            ["2026.05.31"] = {
+                url    = "https://github.com/KhronosGroup/OpenGL-Registry/archive/a30033d3e812c9bf10094f1010374a6b15e192eb.tar.gz",
+                sha256 = "3dadc4ccfe4b8d3a798fb405b7067304420ff997505b67041f3edfeecc3228ae",
+            },
+        },
+        macosx = {
+            ["2026.05.31"] = {
+                url    = "https://github.com/KhronosGroup/OpenGL-Registry/archive/a30033d3e812c9bf10094f1010374a6b15e192eb.tar.gz",
+                sha256 = "3dadc4ccfe4b8d3a798fb405b7067304420ff997505b67041f3edfeecc3228ae",
+            },
+        },
+        windows = {
+            ["2026.05.31"] = {
+                url    = "https://github.com/KhronosGroup/OpenGL-Registry/archive/a30033d3e812c9bf10094f1010374a6b15e192eb.tar.gz",
+                sha256 = "3dadc4ccfe4b8d3a798fb405b7067304420ff997505b67041f3edfeecc3228ae",
+            },
+        },
+    },
+
+    mcpp = {
+        language     = "c++23",
+        import_std   = false,
+        c_standard   = "c11",
+        include_dirs = {"*/api", "mcpp_generated/include"},
+        generated_files = {
+            ["mcpp_generated/include/GL/gl.h"] = "#pragma once\n#include <GL/glcorearb.h>\n",
+            ["mcpp_generated/opengl_empty.c"] = "int mcpp_compat_opengl_headers_anchor(void) { return 0; }\n",
+        },
+        sources = {"mcpp_generated/opengl_empty.c"},
+        targets = { ["opengl"] = { kind = "lib" } },
+        deps    = {},
+    },
+}