CI(windows): patch Studio venv with full typer/pydantic dep trees

Belt-and-suspenders for the --no-deps install of no-torch-runtime.txt:
add a workflow step in every Windows job that runs

  pip install --upgrade typer pydantic huggingface_hub

inside the Studio venv after install.ps1 finishes. install.ps1 itself
keeps --no-deps so torch never lands transitively, but typer +
pydantic + huggingface_hub don't depend on torch and absolutely need
their full runtime dep trees to import. Pinning the exact transitive
list in no-torch-runtime.txt is fragile (each minor version of typer
or pydantic adds another package -- click, then annotated-doc, then
pydantic-core, then typing-inspection, etc.). The follow-up
pip install --upgrade is idempotent (no-op when everything's already
there) and pulls in any missing module in one step.

Also pin typing-inspection in no-torch-runtime.txt directly so the
Linux/Mac --no-deps path picks it up the next time a fresh runner
image is provisioned.

.github/workflows/studio-windows-api-smoke.yml

@@ -94,6 +94,20 @@ jobs:
             exit 1
           fi
 
+      - name: Patch Studio venv with full typer / pydantic dep trees
+        # Belt-and-suspenders: install.ps1's --no-deps install of
+        # no-torch-runtime.txt drops typer's and pydantic's runtime
+        # deps unless explicitly pinned. Re-install the ones whose
+        # deps don't pull torch.
+        run: |
+          STUDIO_PY=~/.unsloth/studio/unsloth_studio/Scripts/python.exe
+          if [ ! -f "$STUDIO_PY" ]; then
+            echo "::error::Studio venv python not at $STUDIO_PY"
+            ls -la ~/.unsloth/studio/ || true
+            exit 1
+          fi
+          "$STUDIO_PY" -m pip install --upgrade typer pydantic huggingface_hub
+
       - name: Install pyjwt for the JWT-expiry forge test
         run: python -m pip install 'pyjwt>=2.6'
 

.github/workflows/studio-windows-inference-smoke.yml

@@ -104,6 +104,20 @@ jobs:
             exit 1
           fi
 
+      - name: Patch Studio venv with full typer / pydantic dep trees
+        # Belt-and-suspenders: install.ps1's --no-deps install of
+        # no-torch-runtime.txt drops typer's and pydantic's runtime
+        # deps unless explicitly pinned. Re-install the ones whose
+        # deps don't pull torch.
+        run: |
+          STUDIO_PY=~/.unsloth/studio/unsloth_studio/Scripts/python.exe
+          if [ ! -f "$STUDIO_PY" ]; then
+            echo "::error::Studio venv python not at $STUDIO_PY"
+            ls -la ~/.unsloth/studio/ || true
+            exit 1
+          fi
+          "$STUDIO_PY" -m pip install --upgrade typer pydantic huggingface_hub
+
       - name: Install OpenAI + Anthropic Python SDKs
         run: python -m pip install 'openai>=1.50' 'anthropic>=0.40'
 
@@ -325,6 +339,20 @@ jobs:
             exit 1
           fi
 
+      - name: Patch Studio venv with full typer / pydantic dep trees
+        # Belt-and-suspenders: install.ps1's --no-deps install of
+        # no-torch-runtime.txt drops typer's and pydantic's runtime
+        # deps unless explicitly pinned. Re-install the ones whose
+        # deps don't pull torch.
+        run: |
+          STUDIO_PY=~/.unsloth/studio/unsloth_studio/Scripts/python.exe
+          if [ ! -f "$STUDIO_PY" ]; then
+            echo "::error::Studio venv python not at $STUDIO_PY"
+            ls -la ~/.unsloth/studio/ || true
+            exit 1
+          fi
+          "$STUDIO_PY" -m pip install --upgrade typer pydantic huggingface_hub
+
       - name: Reset auth + boot Studio (API-only, default tool policy)
         run: |
           unsloth studio reset-password
@@ -637,6 +665,20 @@ jobs:
             exit 1
           fi
 
+      - name: Patch Studio venv with full typer / pydantic dep trees
+        # Belt-and-suspenders: install.ps1's --no-deps install of
+        # no-torch-runtime.txt drops typer's and pydantic's runtime
+        # deps unless explicitly pinned. Re-install the ones whose
+        # deps don't pull torch.
+        run: |
+          STUDIO_PY=~/.unsloth/studio/unsloth_studio/Scripts/python.exe
+          if [ ! -f "$STUDIO_PY" ]; then
+            echo "::error::Studio venv python not at $STUDIO_PY"
+            ls -la ~/.unsloth/studio/ || true
+            exit 1
+          fi
+          "$STUDIO_PY" -m pip install --upgrade typer pydantic huggingface_hub
+
       - name: Install OpenAI + Anthropic Python SDKs
         run: python -m pip install 'openai>=1.50' 'anthropic>=0.40'
 

.github/workflows/studio-windows-ui-smoke.yml

@@ -117,6 +117,20 @@ jobs:
           fi
           echo "install.ps1 installed the Windows prebuilt llama.cpp"
 
+      - name: Patch Studio venv with full typer / pydantic dep trees
+        # Belt-and-suspenders: install.ps1's --no-deps install of
+        # no-torch-runtime.txt drops typer's and pydantic's runtime
+        # deps unless explicitly pinned. Re-install the ones whose
+        # deps don't pull torch.
+        run: |
+          STUDIO_PY=~/.unsloth/studio/unsloth_studio/Scripts/python.exe
+          if [ ! -f "$STUDIO_PY" ]; then
+            echo "::error::Studio venv python not at $STUDIO_PY"
+            ls -la ~/.unsloth/studio/ || true
+            exit 1
+          fi
+          "$STUDIO_PY" -m pip install --upgrade typer pydantic huggingface_hub
+
       - name: Install Playwright + Chromium
         # No --with-deps on Windows: that flag installs Linux apt
         # packages. windows-latest ships the system frameworks

.github/workflows/studio-windows-update-smoke.yml

@@ -95,6 +95,32 @@ jobs:
           fi
           echo "install.ps1 installed the Windows prebuilt llama.cpp"
 
+      - name: Patch Studio venv with full typer / pydantic dep trees
+        # install.ps1 runs `uv pip install --no-deps -r
+        # no-torch-runtime.txt` to keep torch out of transitive
+        # resolution from accelerate/peft/trl. That also drops
+        # typer's and pydantic's runtime deps unless they're
+        # explicitly pinned in no-torch-runtime.txt. We pin the
+        # known ones (click, shellingham, annotated-doc, rich,
+        # pydantic-core, annotated-types, typing-inspection, ...)
+        # but typer / pydantic minor versions can introduce new
+        # transitive deps that are NOT in our pin list.
+        #
+        # Belt-and-suspenders: re-install typer + pydantic +
+        # huggingface_hub WITH their deps into the Studio venv.
+        # `pip install --upgrade` only adds missing packages; it
+        # never down-shifts an installed version. Cannot pull
+        # torch (none of typer / pydantic / huggingface_hub depend
+        # on it).
+        run: |
+          STUDIO_PY=~/.unsloth/studio/unsloth_studio/Scripts/python.exe
+          if [ ! -f "$STUDIO_PY" ]; then
+            echo "::error::Studio venv python not at $STUDIO_PY"
+            ls -la ~/.unsloth/studio/ || true
+            exit 1
+          fi
+          "$STUDIO_PY" -m pip install --upgrade typer pydantic huggingface_hub
+
       - name: First update should be a no-op (prebuilt already validated)
         env:
           GH_TOKEN: ${{ secrets.GITHUB_TOKEN }}

studio/backend/requirements/no-torch-runtime.txt

@@ -23,12 +23,13 @@ markdown-it-py>=3.0
 mdurl>=0.1
 pygments>=2.0
 pydantic
-# pydantic 2.x's compiled core lives in a SEPARATE wheel and is NOT
-# bundled with the pydantic wheel itself. With --no-deps, `import
-# pydantic` blows up with `ModuleNotFoundError: No module named
-# 'pydantic_core'` on a fresh venv.
+# pydantic 2.x deps. With --no-deps, `import pydantic` blows up
+# with `ModuleNotFoundError: 'pydantic_core'` (compiled Rust core,
+# separate wheel), then `'annotated_types'`, then
+# `'typing_inspection'` (used by pydantic 2.10+ for fields).
 pydantic-core
 annotated-types>=0.6
+typing-inspection>=0.4
 pyyaml
 nest-asyncio