pipe fixes for windows and throttling the download print spam

capabilities/comfyui/app.py

@@ -1,6 +1,13 @@
 import os
+import sys
 import urllib.request
 
+if sys.platform == 'win32':
+    for stream in (sys.stdout, sys.stderr):
+        reconfigure = getattr(stream, 'reconfigure', None)
+        if reconfigure is not None:
+            reconfigure(encoding='utf-8', errors='replace')
+
 DOWNLOADS = [
     (
         "https://huggingface.co/Comfy-Org/z_image_turbo/resolve/main/split_files/diffusion_models/z_image_turbo_bf16.safetensors",
@@ -17,11 +24,23 @@
 ]
 
 
-def hook(count, block_size, total_size):
-    got = count * block_size
-    if total_size > 0:
-        pct = min(100.0, got * 100 / total_size)
-        print(f"  {pct:5.1f}%  {got/(1024**3):.2f} / {total_size/(1024**3):.2f} GB", flush=True)
+PROGRESS_INTERVAL_MB = 100
+
+
+def make_hook():
+    last_mb = [0.0]
+
+    def hook(count, block_size, total_size):
+        if total_size <= 0:
+            return
+        got = count * block_size
+        mb = got / (1024 ** 2)
+        if mb - last_mb[0] >= PROGRESS_INTERVAL_MB or got >= total_size:
+            pct = min(100.0, got * 100 / total_size)
+            print(f"  {pct:5.1f}%  {got/(1024**3):.2f} / {total_size/(1024**3):.2f} GB", flush=True)
+            last_mb[0] = mb
+
+    return hook
 
 
 for url, dest in DOWNLOADS:
@@ -30,7 +49,7 @@ def hook(count, block_size, total_size):
         continue
     os.makedirs(os.path.dirname(dest), exist_ok=True)
     print(f"Downloading -> {dest}")
-    urllib.request.urlretrieve(url, dest, reporthook=hook)
+    urllib.request.urlretrieve(url, dest, reporthook=make_hook())
     print()
 
 print("All default model downloads complete.")

capabilities/comfyui/pixi.toml

@@ -70,7 +70,7 @@ initialize = { cmd = "echo 'Initialization complete. Run: pixi run serve'", depe
 # the launch to ./ComfyUI/ rather than trying to pick up a recent install
 # elsewhere. Extra arguments for main.py (e.g. `-- --listen 0.0.0.0`)
 # can be appended on the pixi command line.
-serve = { cmd = "comfy tracking disable && comfy --here launch", depends-on = ["install-comfyui", "download-models"] }
+serve = { cmd = "comfy --skip-prompt --here launch", depends-on = ["install-comfyui", "download-models"] }
 
 # ---------------------------------------------------------------------------
 # Platform-specific `install-comfyui`
@@ -94,10 +94,18 @@ serve = { cmd = "comfy tracking disable && comfy --here launch", depends-on = ["
 #              from the nightly PyPI index)
 # ---------------------------------------------------------------------------
 [target.linux-64.tasks]
-install-comfyui = "comfy tracking disable && (test -d ComfyUI || comfy --skip-prompt --here install --nvidia)"
+install-comfyui = "test -d ComfyUI || comfy --skip-prompt --here install --nvidia"
 
 [target.win-64.tasks]
-install-comfyui = "comfy tracking disable && (if not exist ComfyUI\\ (comfy --skip-prompt --here install --nvidia))"
+install-comfyui = "test -d ComfyUI || comfy --skip-prompt --here install --nvidia"
+
+# Force UTF-8 for all child Python processes (comfy-cli, ComfyUI, pip).
+# When the parent (.go) app captures stdout/stderr as pipes, Python on
+# Windows defaults to the system codepage (cp1252) and crashes on the
+# emoji/box-drawing chars that comfy-cli and ComfyUI emit.
+[target.win-64.activation.env]
+PYTHONIOENCODING = "utf-8"
+PYTHONUTF8 = "1"
 
 [target.osx-arm64.tasks]
-install-comfyui = "comfy tracking disable && (test -d ComfyUI || comfy --skip-prompt --here install --m-series)"
+install-comfyui = "test -d ComfyUI || comfy --skip-prompt --here install --m-series"