Add Windows setup instructions

app/cmake/zmk_config.cmake

@@ -83,7 +83,7 @@ if (BASE_KEYMAPS_DIR)
 	if (EXISTS "${KEYMAP_DIR}/include")
 		include_directories("${KEYMAP_DIR}/include")
 	endif()
-	list(APPEND ZMK_DTC_FILES "${KEYMAP_DIR}/keymap.overlay")
+	list(APPEND ZMK_DTC_FILES "${KEYMAP_DIR}keymap.overlay")
 endif()
 
 if (ZMK_CONFIG)

docs/docs/dev-setup.md

@@ -69,9 +69,24 @@ TODO
 
 TODO
 
+### Windows
+
+Use `cmd.exe` with these instructions rather than PowerShell.
+
+Chocolatey is recommended and used for the following instructions. You can manually install each of these applications and add them to your `PATH` if you don't want to use Chocolatey.
+
+1. [Install Chocolatey](https://chocolatey.org/install)
+2. Open `cmd.exe` as **Administrator**
+3. Run the following `choco` commands:
+	```shell
+	choco install cmake --installargs 'ADD_CMAKE_TO_PATH=System'
+	choco install ninja gperf python git
+	```
+4. Close your `cmd.exe` session and open a new non-administrator session for the rest of the setup.
+
 ### WSL
 
-Windows Subsystem for Linux can use various Linux distributions. Find a WSL installation on the [Windows Store](https://aka.ms/wslstore).
+Windows Subsystem for Linux can use various Linux distributions. Find a WSL installation on the [Windows Store](https://aka.ms/wslstore). **Note that flashing from WSL is not supported at the moment.**
 
 After installing your preferred flavor, follow the directions above on [Debian/Ubuntu](#debianubuntu) or [Fedora](#fedora).
 
@@ -166,15 +181,23 @@ We suggest two main [options](https://docs.zephyrproject.org/latest/guides/env_v
 
 To load the Zephyr environment properly for just one transient shell, run the following from your ZMK checkout directory:
 
+Unix:
 ```
 source zephyr/zephyr-env.sh
 ```
 
+Windows:
+```
+source zephyr/zephyr-env.cmd
+```
+
 #### All Shells
 
 To load the environment variables for your shell every time,
 append the existing `~/.zephyrrc` file to your shell's RC file and then start a new shell.
 
+*Skip on Windows*
+
 ##### Bash
 
 ```