Add Python 3.15 support and drop Python 3.9 (#430)

Upgraded libs to the latest stable version

Author: mxamin

.github/workflows/cache_libs.yml

@@ -4,7 +4,7 @@ on:
   workflow_call:
     inputs:
       LIBICONV_VERSION:
-        default: "1.18"
+        default: "1.19"
         required: false
         type: string
       LIBXML2_VERSION:
@@ -16,39 +16,39 @@ on:
         required: false
         type: string
       OPENSSL_VERSION:
-        default: "3.6.0"
+        default: "3.6.5"
         required: false
         type: string
       XMLSEC1_VERSION:
-        default: "1.3.11"
+        default: "1.3.12"
         required: false
         type: string
       ZLIB_VERSION:
-        default: "1.3.1"
+        default: "1.3.2"
         required: false
         type: string
       WIN_LIBICONV_VERSION:
-        default: "1.18-1"
+        default: "1.19-1"
         required: false
         type: string
       WIN_LIBXML2_VERSION:
-        default: "2.11.9-3"
+        default: "2.11.9-8"
         required: false
         type: string
       WIN_LIBXSLT_VERSION:
-        default: "1.1.39"
+        default: "1.1.45"
         required: false
         type: string
       WIN_OPENSSL_VERSION:
-        default: "3.5.6"
+        default: "3.5.9"
         required: false
         type: string
       WIN_XMLSEC1_VERSION:
-        default: "1.3.11"
+        default: "1.3.12"
         required: false
         type: string
       WIN_ZLIB_VERSION:
-        default: "1.3.1"
+        default: "1.3.2"
         required: false
         type: string
 
@@ -87,7 +87,7 @@ jobs:
           - "ubuntu-22.04"
           - "ubuntu-22.04-arm"
           - "macos-latest"
-          - "windows-2022"
+          - "windows-2025-vs2026"
           - "windows-11-arm"
 
     runs-on: ${{ matrix.os }}

.github/workflows/linuxbrew.yml

@@ -10,7 +10,7 @@ jobs:
 
     strategy:
       matrix:
-        python: ["3.9", "3.10", "3.11", "3.12", "3.13", "3.14"]
+        python: ["3.10", "3.11", "3.12", "3.13", "3.14", "3.15"]
 
     env:
       # For some unknown reason, linuxbrew tries to use "gcc-11" by default, which doesn't exist.

.github/workflows/macosx.yml

@@ -23,7 +23,7 @@ jobs:
 
     strategy:
       matrix:
-        python: ["3.9", "3.10", "3.11", "3.12", "3.13", "3.14"]
+        python: ["3.10", "3.11", "3.12", "3.13", "3.14", "3.15"]
         static_deps: ["static", ""]
 
     steps:

.github/workflows/manylinux.yml

@@ -23,7 +23,7 @@ jobs:
 
     strategy:
       matrix:
-        python-abi: [cp39-cp39, cp310-cp310, cp311-cp311, cp312-cp312, cp313-cp313, cp314-cp314]
+        python-abi: [cp310-cp310, cp311-cp311, cp312-cp312, cp313-cp313, cp314-cp314, cp315-cp315]
         image:
           - manylinux2014_x86_64
           - manylinux_2_28_x86_64

.github/workflows/sdist.yml

@@ -14,7 +14,7 @@ jobs:
 
     strategy:
       matrix:
-        python: ["3.9", "3.10", "3.11", "3.12", "3.13", "3.14"]
+        python: ["3.10", "3.11", "3.12", "3.13", "3.14", "3.15"]
 
     steps:
       - uses: actions/checkout@v3

.github/workflows/wheels.yml

@@ -84,7 +84,7 @@ jobs:
 
       - name: Install cibuildwheel
         # N.B. Keep cibuildwheel version pin consistent with "build_wheels" job below.
-        run: pipx install cibuildwheel==3.3
+        run: pipx install cibuildwheel==4.3.4
 
       - id: set-matrix
         run: |
@@ -96,7 +96,7 @@ jobs:
               && cibuildwheel --print-build-identifiers --platform macos \
               | jq -nRc '{"only": inputs, "os": "macos-latest"}' \
               && cibuildwheel --print-build-identifiers --platform windows \
-              | jq -nRc '{"only": inputs, "os": "windows-2022"}' \
+              | jq -nRc '{"only": inputs, "os": "windows-2025-vs2026"}' \
               && cibuildwheel --print-build-identifiers --platform windows --archs ARM64 \
               | jq -nRc '{"only": inputs, "os": "windows-11-arm"}'
             } | jq -sc
@@ -145,7 +145,7 @@ jobs:
           platforms: all
 
       - name: Build wheels
-        uses: pypa/cibuildwheel@v3.3.0
+        uses: pypa/cibuildwheel@v4.3.4
         with:
           only: ${{ matrix.only }}
         env:

.travis.yml

@@ -9,12 +9,12 @@ notifications:
   email: false
 
 python:
-  - "3.9"
   - "3.10"
   - "3.11"
   - "3.12"
   - "3.13"
   - "3.14"
+  - "3.15"
 
 env:
   global:

build_support/lib_xmlsec_dependency_builder.py

@@ -36,7 +36,7 @@ def triplet(self) -> str:
 
 
 class LibXmlsecDependencyBuilder:
-    WINDOWS_LIBS_DOWNLOAD_RELEASE_URL = 'https://github.com/mxamin/python-xmlsec-win-binaries/releases/download/2026.04.28/'
+    WINDOWS_LIBS_DOWNLOAD_RELEASE_URL = 'https://github.com/mxamin/python-xmlsec-win-binaries/releases/download/2026.10.23/'
     LIB_VERSION_ENV_VARS: ClassVar[dict[str, str]] = {
         'libiconv_version': 'PYXMLSEC_LIBICONV_VERSION',
         'libxml2_version': 'PYXMLSEC_LIBXML2_VERSION',
@@ -46,20 +46,20 @@ class LibXmlsecDependencyBuilder:
         'zlib_version': 'PYXMLSEC_ZLIB_VERSION',
     }
     UNIX_DEFAULT_LIB_VERSIONS: ClassVar[dict[str, str]] = {
-        'libiconv_version': '1.18',
+        'libiconv_version': '1.19',
         'libxml2_version': '2.14.6',  # Make sure it matches with lxml
-        'libxslt_version': '1.1.43',
-        'openssl_version': '3.6.0',
-        'xmlsec1_version': '1.3.11',
-        'zlib_version': '1.3.1',
+        'libxslt_version': '1.1.43',  # 1.1.44+ requires libxml2 >= 2.15.1
+        'openssl_version': '3.6.5',
+        'xmlsec1_version': '1.3.12',
+        'zlib_version': '1.3.2',
     }
     WINDOWS_DEFAULT_LIB_VERSIONS: ClassVar[dict[str, str]] = {
-        'libiconv_version': '1.18-1',
-        'libxml2_version': '2.11.9-3',  # Make sure it matches with lxml
-        'libxslt_version': '1.1.39',
-        'openssl_version': '3.5.6',
-        'xmlsec1_version': '1.3.11',
-        'zlib_version': '1.3.1',
+        'libiconv_version': '1.19-1',
+        'libxml2_version': '2.11.9-8',  # Make sure it matches with lxml
+        'libxslt_version': '1.1.45',
+        'openssl_version': '3.5.9',
+        'xmlsec1_version': '1.3.12',
+        'zlib_version': '1.3.2',
     }
 
     def __init__(self, platform_name, info=None, libs_dir=None, buildroot=None, plat_name=None):

pyproject.toml

@@ -6,7 +6,7 @@ name = "xmlsec"
 dynamic = ["version"]
 description = "Python bindings for the XML Security Library"
 readme = {file = "README.md", content-type = "text/markdown"}
-requires-python = ">=3.9"
+requires-python = ">=3.10"
 dependencies = ["lxml>=3.8"]
 keywords = ["xmlsec"]
 authors = [
@@ -24,12 +24,12 @@ classifiers = [
   "Operating System :: OS Independent",
   "Programming Language :: C",
   "Programming Language :: Python :: 3",
-  "Programming Language :: Python :: 3.9",
   "Programming Language :: Python :: 3.10",
   "Programming Language :: Python :: 3.11",
   "Programming Language :: Python :: 3.12",
   "Programming Language :: Python :: 3.13",
   "Programming Language :: Python :: 3.14",
+  "Programming Language :: Python :: 3.15",
   "Topic :: Text Processing :: Markup :: XML",
   "Typing :: Typed"
 ]
@@ -90,7 +90,7 @@ disable_error_code = ["attr-defined"]
 line-length = 130
 
 # Target Python version (used for autofixes and style rules)
-target-version = "py39"
+target-version = "py310"
 
 # Directories and files to exclude from linting and formatting
 exclude = [
@@ -154,12 +154,12 @@ line-ending = "lf"
 # cibuildwheel
 [tool.cibuildwheel]
 build = [
-    "cp39-*",
     "cp310-*",
     "cp311-*",
     "cp312-*",
     "cp313-*",
-    "cp314-*"
+    "cp314-*",
+    "cp315-*"
 ]
 build-verbosity = 1
 environment = {PYXMLSEC_STATIC_DEPS="true"}

requirements.txt

@@ -1 +1 @@
-lxml==6.1.0
+lxml==6.1.3