fix(flet-web): skip uvicorn[standard] on Windows on ARM

CHANGELOG.md

@@ -8,6 +8,7 @@
 
 * Fix a web app built with `flet build web` getting its project name, e.g. `my_app`, as its label when installed as a PWA on iOS instead of its product name. The manifest's `short_name`, which iOS shows on the Home Screen, was set to the project name; it now defaults to the product name, like the page title. Product names containing quotes no longer break `manifest.json` ([#6911](https://github.com/flet-dev/flet/pull/6911)) by @FeodorFitsner.
 * Fix `flet build`, `flet test` and `flet debug` failing on new projects with a `jni_flutter` "Constant evaluation error" ([#6919](https://github.com/flet-dev/flet/issues/6919), [#6920](https://github.com/flet-dev/flet/pull/6920)) by @ndonkoHenri.
+* Fix `pip install "flet[all]"` failing without a C++ compiler on Windows on ARM: `flet-web` no longer installs `uvicorn[standard]` there, whose `httptools` has no wheels for it ([#6927](https://github.com/flet-dev/flet/pull/6927)) by @ndonkoHenri.
 * Fix `flet run` crashing with `inotify watch limit reached` on Linux; it now warns that the app won't reload on changes and runs it anyway ([#6711](https://github.com/flet-dev/flet/issues/6711), [#6924](https://github.com/flet-dev/flet/pull/6924)) by @ndonkoHenri.
 * Fix Flet apps on Windows turning off HDR, or dimming and blanking external monitors, while running; the unused desktop plugins of `screen_brightness` are no longer bundled ([#6629](https://github.com/flet-dev/flet/issues/6629), [#6493](https://github.com/flet-dev/flet/issues/6493), [#6925](https://github.com/flet-dev/flet/pull/6925)) by @ndonkoHenri.
 

sdk/python/packages/flet-web/pyproject.toml

@@ -9,7 +9,11 @@ requires-python = ">=3.10"
 dependencies = [
     "flet",
     "fastapi >=0.115.12",
-    "uvicorn[standard] >=0.35.0"
+    "websockets >=13.0",
+    "uvicorn >=0.35.0",
+    # httptools, one of uvicorn's standard extras, has no wheels for Windows on ARM,
+    # where installing it needs a C++ compiler. uvicorn falls back to h11 without it.
+    "uvicorn[standard] >=0.35.0; sys_platform != 'win32' or platform_machine != 'ARM64'"
 ]
 
 [project.urls]
@@ -22,4 +26,4 @@ Documentation = "https://flet.dev/docs"
 
 [build-system]
 requires = ["setuptools"]
-build-backend = "setuptools.build_meta"
+build-backend = "setuptools.build_meta"