Slai Agent Runtime: Add Git for Windows usr/bin to the runtime PATH

launch/core/platforms/windows.py

@@ -25,6 +25,14 @@
 from docker.models.containers import Container
 
 
+def build_windows_git_path_command() -> str:
+    """Build the PATH update used after installing Git for Windows."""
+    return r'''$gitCmd = 'C:\Program Files\Git\cmd'
+$gitBin = 'C:\Program Files\Git\bin'
+$gitUsr = 'C:\Program Files\Git\usr\bin'
+if (Test-Path $gitCmd) { $env:PATH = "$gitCmd;$gitBin;$gitUsr;$env:PATH" }'''
+
+
 class WindowsRuntime(LinuxRuntime):
 
     def __init__(
@@ -289,6 +297,9 @@ def start_runtime_from_base_image(
   if (Test-Path $gitCmd) { $env:PATH = "$gitCmd;$gitBin;$env:PATH" }
 }
 '''
+        # Git for Windows keeps cygpath in usr/bin. Add it unconditionally so
+        # preinstalled Git images get the same PATH as newly installed Git.
+        git_install_cmd += "\n" + build_windows_git_path_command()
         repo_clone_cmd = r'git config --global --add safe.directory "C:\testbed"; git init "C:\testbed"; cd "C:\testbed"; git remote add origin {url}; git fetch --depth 1 origin {base}; git reset --hard {base}'.format(
                 url=url, base=base_commit
             )

tests/runtime_test.py

@@ -49,7 +49,10 @@
 
 from launch.core.runtime import SetupRuntime
 from launch.core.platforms.linux import LinuxRuntime
-from launch.core.platforms.windows import WindowsRuntime
+from launch.core.platforms.windows import (
+    WindowsRuntime,
+    build_windows_git_path_command,
+)
 from launch.core.platforms.android import AndroidRuntime
 #from launch.core.platforms.macos import MacosRuntime
 
@@ -66,6 +69,12 @@ class FakeSocket:
     pass
 
 
+def test_windows_git_path_command_includes_usr_bin():
+    command = build_windows_git_path_command()
+    assert r"$gitUsr = 'C:\Program Files\Git\usr\bin'" in command
+    assert "$gitUsr;$env:PATH" in command
+
+
 class FakeContainer:
     def __init__(self, sock: FakeSocket):
         self.sock = sock