diff --git a/ncurses/build.sh b/ncurses/build.sh
new file mode 100755
index 0000000..a2b814f
--- /dev/null
+++ b/ncurses/build.sh
@@ -0,0 +1,73 @@
+#!/usr/bin/env bash
+set -e
+
+DIR="$(cd "$(dirname "${BASH_SOURCE[0]}")" >/dev/null && pwd)"
+cd "$DIR"
+
+VERSION="6.5"
+INSTALL_DIR="$DIR/ncurses/install"
+
+# Idempotent: skip if already built
+if [ -f "$INSTALL_DIR/lib/libncurses.a" ]; then
+  echo "ncurses already present, skipping build."
+  exit 0
+fi
+
+NJOBS="$(nproc 2>/dev/null || sysctl -n hw.ncpu 2>/dev/null || echo 2)"
+
+# Download
+TARBALL="ncurses-${VERSION}.tar.gz"
+if [ ! -f "$TARBALL" ]; then
+  curl -fsSL "https://ftp.gnu.org/gnu/ncurses/${TARBALL}" -o "$TARBALL"
+fi
+
+# Extract
+if [ ! -d "ncurses-${VERSION}" ]; then
+  tar xf "$TARBALL"
+fi
+
+# Build
+PREFIX="$DIR/build/prefix"
+mkdir -p "$DIR/build"
+
+cd "ncurses-${VERSION}"
+./configure \
+  --prefix="$PREFIX" \
+  --without-shared \
+  --with-normal \
+  --without-debug \
+  --without-cxx \
+  --without-cxx-binding \
+  --without-ada \
+  --without-manpages \
+  --without-progs \
+  --without-tests \
+  --without-dlsym \
+  --enable-overwrite
+
+make -j"$NJOBS"
+# Only install libs and headers; skip terminfo database (fails on macOS CI)
+make install.libs install.includes
+cd "$DIR"
+
+# Copy to package install dir
+rm -rf "$INSTALL_DIR"
+mkdir -p "$INSTALL_DIR"/{lib,include}
+
+# Libraries (ncurses 6.x builds wide-char by default; provide as libncurses.a)
+cp "$PREFIX/lib/libncursesw.a" "$INSTALL_DIR/lib/libncurses.a" 2>/dev/null \
+  || cp "$PREFIX/lib/libncurses.a" "$INSTALL_DIR/lib/"
+
+# Headers (--enable-overwrite puts them directly in include/)
+cp "$PREFIX/include/ncurses.h" "$INSTALL_DIR/include/"
+cp "$PREFIX/include/curses.h" "$INSTALL_DIR/include/"
+cp "$PREFIX/include/ncurses_dll.h" "$INSTALL_DIR/include/"
+cp "$PREFIX/include/unctrl.h" "$INSTALL_DIR/include/"
+cp "$PREFIX/include/term.h" "$INSTALL_DIR/include/"
+cp "$PREFIX/include/termcap.h" "$INSTALL_DIR/include/"
+
+# Clean up
+rm -rf "ncurses-${VERSION}" "$TARBALL" "$DIR/build"
+
+echo "Installed ncurses to $INSTALL_DIR"
+du -sh "$INSTALL_DIR"
diff --git a/ncurses/ncurses/__init__.py b/ncurses/ncurses/__init__.py
new file mode 100644
index 0000000..58f7b4f
--- /dev/null
+++ b/ncurses/ncurses/__init__.py
@@ -0,0 +1,10 @@
+import os
+
+DIR = os.path.join(os.path.dirname(__file__), "install")
+LIB_DIR = os.path.join(DIR, "lib")
+INCLUDE_DIR = os.path.join(DIR, "include")
+
+
+def smoketest():
+  assert os.path.isfile(os.path.join(LIB_DIR, "libncurses.a")), "libncurses.a not found"
+  assert os.path.isfile(os.path.join(INCLUDE_DIR, "ncurses.h")), "ncurses.h not found"
diff --git a/ncurses/pyproject.toml b/ncurses/pyproject.toml
new file mode 100644
index 0000000..300bce7
--- /dev/null
+++ b/ncurses/pyproject.toml
@@ -0,0 +1,15 @@
+[build-system]
+requires = ["setuptools>=64", "wheel"]
+build-backend = "setuptools.build_meta"
+
+[project]
+name = "ncurses"
+version = "6.5"
+description = "ncurses terminal library (static build)"
+requires-python = ">=3.8"
+
+[tool.setuptools.packages.find]
+include = ["ncurses*"]
+
+[tool.setuptools.package-data]
+ncurses = ["install/**/*"]
diff --git a/ncurses/setup.py b/ncurses/setup.py
new file mode 100644
index 0000000..98ed15f
--- /dev/null
+++ b/ncurses/setup.py
@@ -0,0 +1,61 @@
+import os
+import platform
+import subprocess
+
+from setuptools.command.build_py import build_py
+
+try:
+  from wheel.bdist_wheel import bdist_wheel
+except ImportError:
+  bdist_wheel = None
+
+
+class BuildNcurses(build_py):
+  """Run build.sh to compile ncurses before collecting package data."""
+
+  def run(self):
+    pkg_dir = os.path.dirname(os.path.abspath(__file__))
+    marker = os.path.join(pkg_dir, "ncurses", "install", "lib", "libncurses.a")
+
+    if not os.path.exists(marker):
+      build_script = os.path.join(pkg_dir, "build.sh")
+      subprocess.check_call(["bash", build_script], cwd=pkg_dir)
+
+    super().run()
+
+
+cmdclass = {"build_py": BuildNcurses}
+
+if bdist_wheel is not None:
+
+  class PlatformWheel(bdist_wheel):
+    """Produce a platform-specific, Python-version-agnostic wheel."""
+
+    def finalize_options(self):
+      super().finalize_options()
+      self.root_is_pure = False
+
+    def get_tag(self):
+      system = platform.system()
+      machine = platform.machine()
+
+      if system == "Linux":
+        plat = f"linux_{machine}"
+      elif system == "Darwin":
+        plat = "macosx_11_0_arm64"
+      else:
+        plat = f"{system.lower()}_{machine}"
+
+      return "py3", "none", plat
+
+  cmdclass["bdist_wheel"] = PlatformWheel
+
+
+def setup():
+  from setuptools import setup as _setup
+
+  _setup(cmdclass=cmdclass)
+
+
+if __name__ == "__main__":
+  setup()
diff --git a/zstd/build.sh b/zstd/build.sh
new file mode 100755
index 0000000..ab49b71
--- /dev/null
+++ b/zstd/build.sh
@@ -0,0 +1,58 @@
+#!/usr/bin/env bash
+set -e
+
+DIR="$(cd "$(dirname "${BASH_SOURCE[0]}")" >/dev/null && pwd)"
+cd "$DIR"
+
+VERSION="1.5.6"
+INSTALL_DIR="$DIR/zstd/install"
+
+# Idempotent: skip if already built
+if [ -f "$INSTALL_DIR/lib/libzstd.a" ]; then
+  echo "zstd already present, skipping build."
+  exit 0
+fi
+
+NJOBS="$(nproc 2>/dev/null || sysctl -n hw.ncpu 2>/dev/null || echo 2)"
+
+# Clone
+if [ ! -d "zstd-src" ]; then
+  git clone --depth 1 --branch "v${VERSION}" https://github.com/facebook/zstd.git zstd-src
+fi
+
+# Build
+PREFIX="$DIR/build/prefix"
+mkdir -p "$DIR/build"
+
+cmake -S zstd-src/build/cmake -B "$DIR/build" \
+  -DCMAKE_BUILD_TYPE=MinSizeRel \
+  -DCMAKE_INTERPROCEDURAL_OPTIMIZATION=ON \
+  -DCMAKE_INSTALL_PREFIX="$PREFIX" \
+  -DCMAKE_INSTALL_LIBDIR=lib \
+  -DCMAKE_POLICY_VERSION_MINIMUM=3.5 \
+  -DZSTD_BUILD_PROGRAMS=OFF \
+  -DZSTD_BUILD_TESTS=OFF \
+  -DZSTD_BUILD_CONTRIB=OFF \
+  -DZSTD_BUILD_SHARED=OFF \
+  -DZSTD_BUILD_STATIC=ON
+
+cmake --build "$DIR/build" -j"$NJOBS"
+cmake --install "$DIR/build"
+
+# Copy to package install dir
+rm -rf "$INSTALL_DIR"
+mkdir -p "$INSTALL_DIR"/{lib,include}
+
+# Library
+cp "$PREFIX/lib/libzstd.a" "$INSTALL_DIR/lib/"
+
+# Headers
+cp "$PREFIX/include/zstd.h" "$INSTALL_DIR/include/"
+cp "$PREFIX/include/zstd_errors.h" "$INSTALL_DIR/include/"
+cp "$PREFIX/include/zdict.h" "$INSTALL_DIR/include/"
+
+# Clean up
+rm -rf zstd-src "$DIR/build"
+
+echo "Installed zstd to $INSTALL_DIR"
+du -sh "$INSTALL_DIR"
diff --git a/zstd/pyproject.toml b/zstd/pyproject.toml
new file mode 100644
index 0000000..f84702a
--- /dev/null
+++ b/zstd/pyproject.toml
@@ -0,0 +1,15 @@
+[build-system]
+requires = ["setuptools>=64", "wheel"]
+build-backend = "setuptools.build_meta"
+
+[project]
+name = "zstd"
+version = "1.5.6"
+description = "Zstandard compression library (static build)"
+requires-python = ">=3.8"
+
+[tool.setuptools.packages.find]
+include = ["zstd*"]
+
+[tool.setuptools.package-data]
+zstd = ["install/**/*"]
diff --git a/zstd/setup.py b/zstd/setup.py
new file mode 100644
index 0000000..0de2ae8
--- /dev/null
+++ b/zstd/setup.py
@@ -0,0 +1,61 @@
+import os
+import platform
+import subprocess
+
+from setuptools.command.build_py import build_py
+
+try:
+  from wheel.bdist_wheel import bdist_wheel
+except ImportError:
+  bdist_wheel = None
+
+
+class BuildZstd(build_py):
+  """Run build.sh to compile zstd before collecting package data."""
+
+  def run(self):
+    pkg_dir = os.path.dirname(os.path.abspath(__file__))
+    marker = os.path.join(pkg_dir, "zstd", "install", "lib", "libzstd.a")
+
+    if not os.path.exists(marker):
+      build_script = os.path.join(pkg_dir, "build.sh")
+      subprocess.check_call(["bash", build_script], cwd=pkg_dir)
+
+    super().run()
+
+
+cmdclass = {"build_py": BuildZstd}
+
+if bdist_wheel is not None:
+
+  class PlatformWheel(bdist_wheel):
+    """Produce a platform-specific, Python-version-agnostic wheel."""
+
+    def finalize_options(self):
+      super().finalize_options()
+      self.root_is_pure = False
+
+    def get_tag(self):
+      system = platform.system()
+      machine = platform.machine()
+
+      if system == "Linux":
+        plat = f"linux_{machine}"
+      elif system == "Darwin":
+        plat = "macosx_11_0_arm64"
+      else:
+        plat = f"{system.lower()}_{machine}"
+
+      return "py3", "none", plat
+
+  cmdclass["bdist_wheel"] = PlatformWheel
+
+
+def setup():
+  from setuptools import setup as _setup
+
+  _setup(cmdclass=cmdclass)
+
+
+if __name__ == "__main__":
+  setup()
diff --git a/zstd/zstd/__init__.py b/zstd/zstd/__init__.py
new file mode 100644
index 0000000..e34b75b
--- /dev/null
+++ b/zstd/zstd/__init__.py
@@ -0,0 +1,10 @@
+import os
+
+DIR = os.path.join(os.path.dirname(__file__), "install")
+LIB_DIR = os.path.join(DIR, "lib")
+INCLUDE_DIR = os.path.join(DIR, "include")
+
+
+def smoketest():
+  assert os.path.isfile(os.path.join(LIB_DIR, "libzstd.a")), "libzstd.a not found"
+  assert os.path.isfile(os.path.join(INCLUDE_DIR, "zstd.h")), "zstd.h not found"