Update Pyodide build to Python 3.14 / 2026

.github/workflows/build.yaml

@@ -511,7 +511,7 @@ jobs:
                 arch:
                     - x86_64
                 python-version:
-                    - "3.13"
+                    - "3.14"
                 node-version: [22.x]
         steps:
             - name: Checkout
@@ -578,8 +578,8 @@ jobs:
                   for w in "${wheels[@]}"; do
                       echo "checking $w"
                       case "$w" in
-                          *pyemscripten_2025_0_wasm32.whl) ;;
-                          *) echo "::error::$w is not tagged pyemscripten_2025_0_wasm32"; exit 1 ;;
+                          *pyemscripten_2026_0_wasm32.whl) ;;
+                          *) echo "::error::$w is not tagged pyemscripten_2026_0_wasm32"; exit 1 ;;
                       esac
                       unzip -l "$w" | grep 'perspective/widget/static/perspective-anywidget.js' \
                           || { echo "::error::$w is missing the anywidget JS bundle"; exit 1; }
@@ -605,7 +605,7 @@ jobs:
                 arch:
                     - x86_64
                 python-version:
-                    - "3.13"
+                    - "3.14"
                 node-version: [22.x]
         steps:
             - name: Checkout
@@ -1240,7 +1240,7 @@ jobs:
 
             - uses: actions/download-artifact@v4
               with:
-                  name: perspective-python-dist-wasm32-emscripten-3.13
+                  name: perspective-python-dist-wasm32-emscripten-3.14
 
             - uses: actions/download-artifact@v4
               with:

DEVELOPMENT.md

@@ -138,10 +138,10 @@ Deviating from this specific version of Emscripten specified in the project's
 `package.json` can introduce various errors that are extremely difficult to
 debug.
 
-To install a specific version of Emscripten (e.g. `4.0.9`):
+To install a specific version of Emscripten (e.g. `5.0.3`):
 
 ```bash
-./emsdk install 4.0.9
+./emsdk install 5.0.3
 ```
 
 Set `PSP_SKIP_EMSDK_INSTALL=1` to prevent `pnpm install` from downloading the

package.json

@@ -13,10 +13,10 @@
         }
     },
     "type": "module",
-    "emscripten": "4.0.9",
+    "emscripten": "5.0.3",
     "binaryen": "version_132",
     "llvm": "17.0.6",
-    "pyodide": "0.29.4",
+    "pyodide": "314.0.7",
     "engines": {
         "node": ">=16 <27"
     },

rust/perspective-python/build.mjs

@@ -32,7 +32,7 @@ if (!!process.env.PSP_DEBUG) {
 const is_pyodide = !!process.env.PSP_PYODIDE;
 
 const python_version =
-    process.env.PSP_PYTHON_VERSION || (is_pyodide ? "3.13" : "3.12");
+    process.env.PSP_PYTHON_VERSION || (is_pyodide ? "3.14" : "3.12");
 
 const version = pkg.version;
 
@@ -50,7 +50,7 @@ if (is_pyodide) {
     );
     emsdk_prefix = `cd ${emsdkdir} && . ./emsdk_env.sh && ./emsdk activate ${emscripten} && cd ${cwd} && `;
     env.MATURIN_PYEMSCRIPTEN_PLATFORM_VERSION =
-        process.env.MATURIN_PYEMSCRIPTEN_PLATFORM_VERSION || "2025_0";
+        process.env.MATURIN_PYEMSCRIPTEN_PLATFORM_VERSION || "2026_0";
 }
 
 // if not windows

rust/perspective-python/pyproject.toml

@@ -55,6 +55,7 @@ classifiers = [
     "Programming Language :: Python :: 3.11",
     "Programming Language :: Python :: 3.12",
     "Programming Language :: Python :: 3.13",
+    "Programming Language :: Python :: 3.14",
     "Framework :: Jupyter",
     "Framework :: Jupyter :: JupyterLab",
     "Framework :: Jupyter :: JupyterLab :: 3",

rust/perspective-server/cpp/perspective/CMakeLists.txt

@@ -369,7 +369,7 @@ endif()
 set(RAPIDJSON_BUILD_TESTS OFF CACHE BOOL "Disable rapidjson tests")
 
 if(PSP_PYODIDE)
-    set(RELOCATABLE_FLAGS " -sRELOCATABLE=1 -sSIDE_MODULE=2 -fwasm-exceptions -sSUPPORT_LONGJMP=wasm \ ")
+    set(RELOCATABLE_FLAGS " -sSIDE_MODULE=2 -fwasm-exceptions -sSUPPORT_LONGJMP=wasm \ ")
     string(APPEND CMAKE_EXE_LINKER_FLAGS "${RELOCATABLE_FLAGS} -sWASM_BIGINT=1 ")
     string(APPEND CMAKE_C_FLAGS "${RELOCATABLE_FLAGS}")
     string(APPEND CMAKE_CXX_FLAGS "${RELOCATABLE_FLAGS}")

tools/scripts/workspace.mjs

@@ -42,7 +42,7 @@ export function getRustWheelsDir() {
 
 export function getEmscriptenWheelPath() {
     const pspVersion = getWorkspacePackageJson().version.replace("-", ".");
-    const wheeljunk = "cp311-abi3-pyemscripten_2025_0_wasm32";
+    const wheeljunk = "cp311-abi3-pyemscripten_2026_0_wasm32";
     return path.join(
         rustWheelsDir,
         `perspective_python-${pspVersion}-${wheeljunk}.whl`,