diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
index af0a6a56..4b33ee25 100644
--- a/.github/workflows/ci.yml
+++ b/.github/workflows/ci.yml
@@ -8,14 +8,37 @@ on:
       - cron: '0 12 * * *'
         
 jobs:
-  check:
+
+  # We run most of our testing on linux but it should apply to mac too;
+  # we can always add an explicit mac job if it seems worthwhile.
+  ci_unix:
     runs-on: ubuntu-18.04
     steps:
     - uses: actions/checkout@v1
+    - name: Set up Python
+      uses: actions/setup-python@v1
+      with:
+        python-version: 3.7
     - name: Install dependencies
-      run: |
-        sudo apt-get -y install python3.7 python3.7-dev python3-pip python3-setuptools
-        tools/snippets install_pip_reqs
+      run: tools/snippets install_pip_reqs
     - name: Run checks and tests
       run: make -j2 check test
+
+  # Most of our toolset doesn't work on raw windows (outside of WSL).
+  # However, it's nice to at least run unit tests there since some behavior
+  # (filesystem, etc) can vary significantly.
+  ci_windows:
+    runs-on: windows-latest
+    steps:
+    - uses: actions/checkout@v1
+    - name: Set up Python
+      uses: actions/setup-python@v1
+      with:
+        python-version: 3.7
+    - name: Install dependencies
+      run: |
+        python -m pip install --upgrade pip
+        pip install pytest
+    - name: Run tests
+      run: python tools/snippets pytest -v tests
         
diff --git a/.idea/dictionaries/ericf.xml b/.idea/dictionaries/ericf.xml
index 08a0a985..1e9fa01d 100644
--- a/.idea/dictionaries/ericf.xml
+++ b/.idea/dictionaries/ericf.xml
@@ -308,6 +308,7 @@
       <w>completecmd</w>
       <w>compounddict</w>
       <w>compoundlist</w>
+      <w>conditionalize</w>
       <w>configerror</w>
       <w>confighash</w>
       <w>configkey</w>
diff --git a/tools/efrotools/__init__.py b/tools/efrotools/__init__.py
index aaf0730a..7262e580 100644
--- a/tools/efrotools/__init__.py
+++ b/tools/efrotools/__init__.py
@@ -29,6 +29,7 @@ from __future__ import annotations
 import os
 import json
 import subprocess
+import platform
 from pathlib import Path
 from typing import TYPE_CHECKING
 
@@ -37,7 +38,7 @@ if TYPE_CHECKING:
     from typing_extensions import Literal
 
 # Python binary assumed by these tools.
-PYTHON_BIN = 'python3.7'
+PYTHON_BIN = 'python3.7' if platform.system() != 'Windows' else 'python'
 
 MIT_LICENSE = """Copyright (c) 2011-2020 Eric Froemling
 
diff --git a/tools/efrotools/snippets.py b/tools/efrotools/snippets.py
index da236c00..fe5fb075 100644
--- a/tools/efrotools/snippets.py
+++ b/tools/efrotools/snippets.py
@@ -443,6 +443,7 @@ def compile_python_files() -> None:
 
 def pytest() -> None:
     """Run pytest with project environment set up properly."""
+    import platform
     from efrotools import get_config, PYTHON_BIN
 
     # Grab our python paths for the project and stuff them in PYTHONPATH.
@@ -450,7 +451,8 @@ def pytest() -> None:
     if pypaths is None:
         raise CleanError('python_paths not found in project config.')
 
-    os.environ['PYTHONPATH'] = ':'.join(pypaths)
+    separator = ';' if platform.system() == 'Windows' else ':'
+    os.environ['PYTHONPATH'] = separator.join(pypaths)
 
     # Also tell Python interpreters not to write __pycache__ dirs everywhere
     # which can screw up our builds.
diff --git a/tools/efrotools/statictest.py b/tools/efrotools/statictest.py
index 04092d6f..48db7cfd 100644
--- a/tools/efrotools/statictest.py
+++ b/tools/efrotools/statictest.py
@@ -26,6 +26,7 @@ from typing import TYPE_CHECKING
 import tempfile
 import os
 import subprocess
+import logging
 
 if TYPE_CHECKING:
     from typing import Any, Type, Dict, Optional, List, Union
@@ -180,8 +181,17 @@ def static_type_equals(value: Any, statictype: Union[Type, str]) -> bool:
     a match (for instance, if mypy outputs 'builtins.int*' it will match
     the 'int' type passed in as statictype).
     """
+    import platform
     from inspect import getframeinfo, stack
 
+    # NOTE: don't currently support windows here; just going to always
+    # pass so we don't have to conditionalize all our individual test
+    # locations.
+    if platform.system() == 'Windows':
+        logging.debug('static_type_equals not supported on windows;'
+                      ' will always pass...')
+        return True
+
     # We don't actually use there here; we pull them as strings from the src.
     del value