Add zstd to Windows

Author: zanieb

cpython-windows/build.py

@@ -357,6 +357,7 @@ def hack_props(
     sqlite_version = DOWNLOADS["sqlite"]["version"]
     xz_version = DOWNLOADS["xz"]["version"]
     zlib_version = DOWNLOADS[zlib_entry]["version"]
+    zstd_version = DOWNLOADS["zstd"]["version"]
 
     mpdecimal_version = DOWNLOADS["mpdecimal"]["version"]
 
@@ -372,6 +373,7 @@ def hack_props(
     xz_path = td / ("xz-%s" % xz_version)
     zlib_prefix = "cpython-source-deps-" if zlib_entry == "zlib-ng" else ""
     zlib_path = td / ("%s%s-%s" % (zlib_prefix, zlib_entry, zlib_version))
+    zstd_path = td / ("cpython-source-deps-zstd-%s" % zstd_version)
     mpdecimal_path = td / ("mpdecimal-%s" % mpdecimal_version)
 
     openssl_root = td / "openssl" / arch
@@ -416,6 +418,9 @@ def hack_props(
             elif b"<zlibNgDir" in line:
                 line = b"<zlibNgDir>%s\\</zlibNgDir>" % zlib_path
 
+            elif b"<zstdDir" in line:
+                line = b"<zstdDir>%s\\</zstdDir>" % zstd_path
+
             elif b"<mpdecimalDir" in line:
                 line = b"<mpdecimalDir>%s\\</mpdecimalDir>" % mpdecimal_path
 
@@ -1255,6 +1260,12 @@ def build_cpython(
             "tk-windows-bin-8612", BUILD, local_name="tk-windows-bin.tar.gz"
         )
 
+    # On CPython 3.14+, zstd is included
+    if meets_python_minimum_version(python_version, "3.14"):
+        zstd_archive = download_entry("zstd", BUILD)
+    else:
+        zstd_archive = None
+
     # CPython 3.13+ no longer uses a bundled `mpdecimal` version so we build it
     if meets_python_minimum_version(python_version, "3.13"):
         mpdecimal_archive = download_entry("mpdecimal", BUILD)
@@ -1297,6 +1308,7 @@ def build_cpython(
                 tk_bin_archive,
                 xz_archive,
                 zlib_archive,
+                zstd_archive,
             ):
                 if a is None:
                     continue

pythonbuild/downloads.py

@@ -429,4 +429,13 @@
         "licenses": ["Zlib"],
         "license_file": "LICENSE.zlib-ng.txt",
     },
+    "zstd": {
+        "url": "https://github.com/python/cpython-source-deps/archive/refs/tags/zstd-1.5.7.tar.gz",
+        "size": 2440298,
+        "sha256": "f24b52470d12f466e9fa4fcc94e6c530625ada51d7b36de7fdc6ed7e6f499c8e",
+        "version": "1.5.7",
+        "library_names": ["zstd"],
+        "licenses": ["BSD-3-Clause"],
+        "license_file": "LICENSE.zstd.txt",
+    },
 }