Build/Build kJams script

The coordinator (taurus, a Mac VM on sugarbear) cannot SSH into a Windows guest and land in the current GUI login session. Parallels "Windows Apps" (WinAppHelper stubs) are Mac .app bundles that, when opened on the hardware host, launch a .bat inside that host's Windows guest session.

Create each stub on the hardware that owns the VM (bobina for luna-pc, sugarbear for taurus-pc). Do not create them on pandora. The VM UUID is baked into AppParams.pva; a stub made on the wrong Mac will not talk to the build guest.

Store finished stubs here (this is what Python opens):

xplat/proj/win/_scripts/

Machine map

Role	Name	What it is
Dev workstation	pandora	Dave's personal Mac. Not a release-build host. Qt Creator / MCP only.
32-bit hardware	bobina	Intel Mac. Hosts luna + luna-pc. Perpetual only.
32-bit Mac guest	luna	Mojave VM on bobina. Coordinator SSHes here directly (open publish.command).
32-bit Windows guest	luna-pc	Windows 10 VM on bobina. Reached only by opening a WinAppHelper on bobina.
64-bit hardware	sugarbear	ARM Mac. Hosts taurus + taurus-pc. Perpetual + subscription. USB code-sign token lives on taurus-pc.
Coordinator / 64-bit Mac guest	taurus	Mac VM on sugarbear. is_initiator() is hardcoded to this host. Launches luna, luna-pc, taurus-pc, and a local Mac worker.
64-bit Windows guest	taurus-pc	Windows VM on sugarbear. Win64 compile + USB signing for both 32- and 64-bit.

Apps Python opens

Names are the Windows guest that runs the work. Python builds them in xplat.get_win_build_apphelper_name() / get_win_codesign_apphelper_name().

Bundle name (exact)	Create / open on	Target VM	App Path
Build kJams luna-pc.app	bobina	luna-pc	Z:\depot\kJams\Development\xplat\proj\win\_scripts\build.bat
Build kJams taurus-pc.app	sugarbear	taurus-pc	Z:\depot\kJams\Development\xplat\proj\win\_scripts\build.bat
code sign taurus-pc.app	sugarbear	taurus-pc	Z:\depot\kJams\Development\xplat\proj\win\_scripts\code_sign_app_taurus.bat
code sign paths taurus-pc.app	sugarbear	taurus-pc	Z:\depot\kJams\Development\xplat\proj\win\_scripts\code_sign_paths_taurus.bat

build.bat picks VS 2019 on LUNA-PC and VS 2022 elsewhere, then runs win_build.py.

Sugarbear (taurus-pc, scripted)

The three taurus-pc stubs are created by create_sugarbear_winapphelpers.py, which follows the recipe below (the same steps as December 2023, with today's guest names and _scripts paths). sugarbear's /usr/bin/python3 is an Xcode license stub, so run the script on taurus (it SSHes to sugarbear only to copy the live Command Prompt). The .sh wrapper on sugarbear hops to taurus.

python3 /Volumes/Developer/depot/kJams/Development/xplat/python/create_sugarbear_winapphelpers.py --dry-run
python3 /Volumes/Developer/depot/kJams/Development/xplat/python/create_sugarbear_winapphelpers.py

That copies the live Parallels Command Prompt app for taurus-pc (Helper Version 27 as of 2026-09) and points APP Path at the bats in the table. Precise recipe: depot xplat/python/create_sugarbear_winapphelpers.md.

taurus-pc must be running. Do not run the script on pandora or bobina. After creating the stubs, copy them into the depot xplat/proj/win\_scripts/ tree and submit — they belong in Perforce. open on sugarbear uses taurus's disk (sugarbear mounts it). Always p4 sync taurus after a pandora submit.

Bobina is not scripted: Parallels there is version-locked for luna.

Recipe (one stub, manual)

This is the 2023 sequence that produced working apps. Do it on bobina for Build kJams luna-pc.app (and anywhere you are not using the sugarbear script). The Windows guest must be running and logged into the GUI session you want the build to use.

1. On the hardware host, open the Parallels "Windows applications" folder for that guest (bobina: luna-pc Applications; sugarbear: taurus-pc Applications).
   1. If you cannot find it: Parallels → Configure → Options → Applications → enable "Show Windows applications folder in Dock". Dock icon → Reveal in Finder.
2. Copy Command Prompt to the Desktop.
3. Rename the copy to the exact bundle name from the table (without .app if Finder hides it), e.g. Build kJams luna-pc.
4. Right-click → Show Package Contents.
5. Edit Contents/Info.plist:
   • Change CFBundleGetInfoString so it ends with the App Path from the table (the Z:\...\ _scripts\....bat line).
   • Change CFBundleName to the exact bundle name without .app.
6. Edit Contents/Resources/English.lproj/InfoPlist.strings: set both CFBundleName and CFBundleDisplayName to that same name.
7. Edit Contents/Resources/AppParams.pva: set APP Path (or App Path) to the same Z:\... bat path.
8. Close out, put the finished .app into /Volumes/Developer/depot/kJams/Development/xplat/proj/win/_scripts/ (same path on the host via the Developer share).
9. You only need the manual copy once on bobina (Build kJams luna-pc.app). sugarbear's three stubs come from the Python script above.

Do not edit CFBundleIdentifier. Leave it as Parallels wrote it on Command Prompt.

Hop (what taurus actually does)

• Win32 build: taurus SSHes to bobina and opens Build kJams luna-pc.app → luna-pc runs build.bat.
• Win64 build: taurus SSHes to sugarbear and opens Build kJams taurus-pc.app → taurus-pc runs build.bat.
• USB code sign (from luna-pc or taurus Mac): SSH to sugarbear and open code sign taurus-pc.app or code sign paths taurus-pc.app.
• Mac32: taurus SSHes to luna and opens publish.command / rogue.command (no WinAppHelper).
• Mac64: taurus spawns a local Terminal worker with KJAMS_WORKER=1.

See also

• Depot docs: Development/documentation/01_Infrastructure_Overview.md
• Development/xplat/python/create_sugarbear_winapphelpers.py
• Development/xplat/python/create_sugarbear_winapphelpers.md
• CF/python/xplat.py — guest_to_host(), get_win_build_apphelper_name()