Add cmd installer entrypoint for Windows

README.md

@@ -37,6 +37,12 @@ Windows client:
 irm https://git.palav.dev/Palav/dosh/raw/branch/main/install.ps1 | iex
 ```
 
+Windows client from `cmd.exe`:
+
+```bat
+curl -fsSL https://git.palav.dev/Palav/dosh/raw/branch/main/install.cmd -o "%TEMP%\dosh-install.cmd" && "%TEMP%\dosh-install.cmd"
+```
+
 ## Use
 
 ```sh

install.cmd

@@ -0,0 +1,32 @@
+@echo off
+setlocal EnableExtensions
+
+set "SCRIPT_URL=%DOSH_INSTALL_PS1%"
+if "%SCRIPT_URL%"=="" set "SCRIPT_URL=https://git.palav.dev/Palav/dosh/raw/branch/main/install.ps1"
+
+set "PS="
+for %%P in (powershell.exe pwsh.exe powershell pwsh) do (
+    if not defined PS (
+        where %%P >nul 2>nul && set "PS=%%P"
+    )
+)
+
+if not defined PS (
+    echo missing required command: powershell.exe or pwsh.exe 1>&2
+    exit /b 1
+)
+
+set "TMP_PS=%TEMP%\dosh-install-%RANDOM%-%RANDOM%.ps1"
+set "DOSH_INSTALL_PS1_URL=%SCRIPT_URL%"
+set "DOSH_INSTALL_PS1_PATH=%TMP_PS%"
+
+"%PS%" -NoProfile -ExecutionPolicy Bypass -Command "$ErrorActionPreference='Stop'; $ProgressPreference='SilentlyContinue'; Invoke-WebRequest -UseBasicParsing -Uri $env:DOSH_INSTALL_PS1_URL -OutFile $env:DOSH_INSTALL_PS1_PATH"
+if errorlevel 1 (
+    del "%TMP_PS%" >nul 2>nul
+    exit /b 1
+)
+
+"%PS%" -NoProfile -ExecutionPolicy Bypass -File "%TMP_PS%" %*
+set "RC=%ERRORLEVEL%"
+del "%TMP_PS%" >nul 2>nul
+exit /b %RC%

tests/release_scripts.rs

@@ -235,6 +235,20 @@ fn windows_installer_bootstraps_git_for_source_fallback_like_unix() {
     assert!(!ps1.contains("Require-Command git"));
 }
 
+#[test]
+fn windows_cmd_installer_wraps_native_powershell_installer() {
+    let cmd = include_str!("../install.cmd");
+    let readme = include_str!("../README.md");
+    assert!(cmd.contains("@echo off"));
+    assert!(cmd.contains("https://git.palav.dev/Palav/dosh/raw/branch/main/install.ps1"));
+    assert!(cmd.contains("for %%P in (powershell.exe pwsh.exe powershell pwsh) do"));
+    assert!(cmd.contains("Invoke-WebRequest -UseBasicParsing"));
+    assert!(cmd.contains("-ExecutionPolicy Bypass -File \"%TMP_PS%\" %*"));
+    assert!(cmd.contains("exit /b %RC%"));
+    assert!(readme.contains("Windows client from `cmd.exe`:"));
+    assert!(readme.contains("install.cmd"));
+}
+
 #[test]
 fn windows_installer_honors_quiet_update_mode() {
     let ps1 = include_str!("../install.ps1");