microsoft · bpkroth · Oct 23, 2025 · Oct 23, 2025 · Oct 23, 2025 · Oct 23, 2025
@@ -101,6 +101,14 @@ jobs:
       run: |
         if (! (conda env list | Select-String -Pattern "^$env:CONDA_ENV_NAME ") ) { conda env create -v -n $env:CONDA_ENV_NAME -f conda-envs/$env:CONDA_ENV_YML }
         conda env update -v -n $env:CONDA_ENV_NAME -f conda-envs/$env:CONDA_ENV_YML --prune
+        $TCL_LIBRARY=(Get-ChildItem -Path "$env:CONDA/envs/$env:CONDA_ENV_NAME/Library/lib" -Recurse -Filter 'init.tcl' | Select-Object -First 1 | Select-Object -ExpandProperty Directory | Select-Object -ExpandProperty FullName)
+        $TK_LIBRARY=(Get-ChildItem -Path "$env:CONDA/envs/$env:CONDA_ENV_NAME/Library/lib" -Recurse -Filter 'pkgIndex.tcl' | Select-Object -ExpandProperty Directory | Where-Object -Property Name -Like 'tk*' | Select-Object -ExpandProperty FullName)
+        $TIX_LIBRARY=(Get-ChildItem -Path "$env:CONDA/envs/$env:CONDA_ENV_NAME/Library/lib" -Recurse -Filter 'pkgIndex.tcl' | Select-Object -ExpandProperty Directory | Where-Object -Property Name -Like 'tix*' | Select-Object -ExpandProperty FullName)
+        # Omitted from environment variables for now, but can re-enable if needed.
+        # See Also: mlos_viz/tests/conftest.py
+        #"TCL_LIBRARY=$TCL_LIBRARY" >> $env:GITHUB_ENV
+        #"TK_LIBRARY=$TK_LIBRARY" >> $env:GITHUB_ENV
+        #"TIX_LIBRARY=$TIX_LIBRARY" >> $env:GITHUB_ENV
 
     - name: Log conda info
       run: |
@@ -109,6 +117,14 @@ jobs:
         conda config --show-sources
         conda list -n $env:CONDA_ENV_NAME
 
+    - name: Log TCL path
+      run: |
+        Get-Item -ErrorAction Continue Env:TCL_LIBRARY
+        Get-Item -ErrorAction Continue Env:TK_LIBRARY
+        Get-Item -ErrorAction Continue Env:TIX_LIBRARY
+        Get-ChildItem -ErrorAction Continue -Path ${{ env.CONDA }}/envs/$env:CONDA_ENV_NAME -Recurse -Filter 'init.tcl' | Select-Object -ExpandProperty FullName
+        Get-ChildItem -ErrorAction Continue -Path ${{ env.CONDA }}/envs/$env:CONDA_ENV_NAME -Recurse -Filter 'pkgIndex.tcl' | Select-Object -ExpandProperty FullName
+
     # This is moreso about code cleanliness, which is a dev thing, not a
     # functionality thing, and the rules for that change between python versions,
     # so only do this for the default in the devcontainer.

@@ -4,6 +4,12 @@
 #
 """Export test fixtures for mlos_viz."""
 
+import os
+import sys
+from glob import glob
+from logging import warning
+from pathlib import Path
+
 from mlos_bench.tests import tunable_groups_fixtures
 from mlos_bench.tests.storage.sql import fixtures as sql_storage_fixtures
 
@@ -15,3 +21,36 @@
 
 tunable_groups_config = tunable_groups_fixtures.tunable_groups_config
 tunable_groups = tunable_groups_fixtures.tunable_groups
+
+# Workaround for #1004
+# See Also: https://github.com/python/cpython/issues/111754
+if sys.platform == "win32":
+    # Fix Tcl/Tk folder
+    tcl_path_info = {
+        "TCL_LIBRARY": ["tcl*", "init.tcl"],
+        "TK_LIBRARY": ["tk*", "pkgIndex.tcl"],
+        "TIX_LIBRARY": ["tix*", "pkgIndex.tcl"],
+    }
+    for env_var, (subdir_pattern, file_name) in tcl_path_info.items():
+        if env_var not in os.environ:
+            try:
+                os.environ[env_var] = str(
+                    Path(
+                        next(
+                            iter(
+                                glob(
+                                    os.path.join(
+                                        sys.base_prefix,
+                                        "Library",
+                                        "lib",
+                                        subdir_pattern,
+                                        file_name,
+                                    )
+                                )
+                            )
+                        )
+                    ).parent
+                )
+                warning(f"""Setting {env_var} to {os.environ[env_var]}""")
+            except StopIteration:
+                warning(f"{env_var} not found, some Tcl/Tk functionality may be limited.")