Do not try and handle deps on Windows (#229)

.github/actions/base-setup/action.yml

@@ -132,6 +132,14 @@ runs:
         elif [ $DEPENDENCY_TYPE == 'minimum' ]; then
           FLAGS="--resolution=lowest-direct"
         fi
+        if [ "$RUNNER_OS" == "Windows" ]; then
+          if [ -n "$FLAGS" ]; then
+            echo "dependency_type not supported on Windows"
+            exit 1
+          else
+            exit 0
+          fi
+        fi
         if [ -f pyproject.toml ]; then
           uv pip compile $FLAGS pyproject.toml -o $HOME/constraints.txt
           echo "PIP_CONSTRAINT=$HOME/constraints.txt" >> $GITHUB_ENV

README.md

@@ -51,6 +51,7 @@ environment variable, so that installations will use that file.
 By default the Python version will be "3.7", which can be overridden with
 `python_version`.  Note that the environment variable also works if
 you use virtual environments like `hatch`.
+Note: this does not work on Windows, and will error.
 
 ```yaml
   minimum_version:
@@ -68,12 +69,13 @@ you use virtual environments like `hatch`.
         run: pytest
 ```
 
-If you want to use your minimum dependencies, you can use the following
+If you want to use your pending dependencies, you can use the following
 option, which will create a constraints file and set the `PIP_CONSTRAINT`
 environment variable, so that installations will use that file.
 By default the Python version will be "3.12", which can be overridden with
 `python_version`.  Note that the environment variable also works if
 you use virtual environments like `hatch`.
+Note: this does not work on Windows, and will error.
 
 ```yaml
   prereleases:

package.json

@@ -1,5 +1,5 @@
 {
-    "name": "@jupyterlab/maintainer-tools",
-    "version": "0.25.2",
-    "private": true
+  "name": "@jupyterlab/maintainer-tools",
+  "version": "0.25.2",
+  "private": true
 }