Desktop from its setup.exe there runs packaged, so Windows keeps what it
writes under %APPDATA% and %LOCALAPPDATA% in
%LOCALAPPDATA%\Packages\Claude_<publisher>\LocalCache\{Roaming,Local}.
Nothing was in %APPDATA%\Claude or %LOCALAPPDATA%\Claude*, so magpie didn't
recognise Desktop at all. The packaged app reads its own copy before the
real folder's, so writing the usual folders wouldn't reach it either.
New internal/desktopdir is the one resolver for Desktop's folders: Data
(its own userData: %APPDATA%\Claude, the package's LocalCache\Roaming\Claude),
Mode (the Claude folder deploymentMode goes into, %LOCALAPPDATA%\Claude as
before) and ThreeP (Claude-3p). The package is found by globbing
Packages\Claude_* (the publisher id isn't assumed) and used unless Desktop
runs in the usual folders: it has run there (Chromium's "Local State"; an
%APPDATA%\Claude holding only another tool's claude_desktop_config.json
doesn't count) and not later in the package's. Every place that built
these paths goes through it:
- agent: desktopDirs (its 3p switch's writes, DesktopConfig3p, Claude
Code's desktop check in claude.go) and detection, which also looks at
Data (replacing the separate %APPDATA%\Claude check). windowsDesktopDir
moved into desktopdir unchanged.
- library: apps() (Desktop's MCP file, was os.UserConfigDir) and
desktopSkillRoots (Cowork's skills-plugin).
- sessions: desktopDataDirs, a copy of agent's resolver, now desktopdir's
All(); it also adds %APPDATA%\Claude on a usual Windows install, where
Desktop keeps 1p Cowork sessions (only %LOCALAPPDATA%'s were read). usage's
request_page and session_provider read it through sessions.DesktopDataDirs.
Tests: TestFindMSIX/TestFindWindowsClassic/TestFindOthers (desktopdir),
TestClaudeDesktopMSIX (agent: detected, switch writes LocalCache\Local\Claude
and Claude-3p, nothing in the usual folders), TestClaudeDesktopMSIXLibrary
(MCP file and skills-plugin in LocalCache\Roaming\Claude),
TestCallsCoworkMSIX (sessions). With the call sites put back to origin/main
the last three fail: "an MSIX Claude Desktop isn't detected", "no Claude
Desktop target: <nil>", "dirs: [.../Claude .../Claude-3p]".
Run: go test -tags nogui ./... under a temp HOME with pinned caches (all
ok); GOOS=darwin|linux|windows go vet -tags nogui on desktopdir, agent,
library, sessions, usage; GOOS=windows go build, GOOS=linux go build -tags
nogui. On the Windows 11 box (Squirrel install, no MSIX package): the
windows test binaries pass every Desktop/MSIX/Cowork test; the full agent
and sessions binaries fail the same 16 and 76 tests (run outside their
testdata) as origin/main's; a read-only probe of desktopdir.Here() gives
the usual %APPDATA%\Claude, %LOCALAPPDATA%\Claude and Claude-3p, Package "".
Not tried against a real MSIX Desktop: none on the box, and Claude-3p's
place in the package (LocalCache\Local, as Local\Claude is in Kilig's
listing) is inferred, not seen.
yetone
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