[Bug 53418] New: Msys2 pacman fails inside _alpm_makepath_mode

[WineHQ Bugzilla]

https://bugs.winehq.org/show_bug.cgi?id=53418

Bug ID: 53418
           Summary: Msys2 pacman fails inside _alpm_makepath_mode
           Product: Wine
           Version: 7.13
          Hardware: x86-64
                OS: Linux
            Status: UNCONFIRMED
          Severity: normal
          Priority: P2
         Component: -unknown
          Assignee: [e-mail]
          Reporter: [e-mail]
      Distribution: ---

Run:

$ mkdir /home/user/pacman-test/var/lib/pacman -p
$ wine64 /path/to/msys64/usr/bin/pacman.exe -Sy --config pacman.conf --debug

With pacman.conf

--------------------------------------
[options]
RootDir = /z/home/user/pacman-test/
CacheDir = /z/home/user/pacman-test/var/cache/pacman/pkg/
GPGDir = /z/home/user/pacman-test/etc/pacman.d/gnupg/
HoldPkg = pacman
Architecture = auto
Color
CheckSpace
ParallelDownloads = 5

[mingw32]
Include = /etc/pacman.d/mirrorlist.mingw
SigLevel = Required

[mingw64]
Include = /etc/pacman.d/mirrorlist.mingw
SigLevel = Required

[ucrt64]
Include = /etc/pacman.d/mirrorlist.mingw
SigLevel = Required

[clang32]
Include = /etc/pacman.d/mirrorlist.mingw
SigLevel = Required

[clang64]
Include = /etc/pacman.d/mirrorlist.mingw
SigLevel = Required

[msys]
Include = /etc/pacman.d/mirrorlist.msys
SigLevel = Required
--------------------------------------

Produces the following error in the log:

--------------------------------------
:: Synchronising package databases...
debug: database dir '/z/home/user/pacman-test/var/lib/pacman/sync/' does not
exist, creating it
debug: returning error 2 from get_sync_dir (../lib/libalpm/be_sync.c: 58) :
unexpected system error
error: failed to synchronize all databases (unexpected system error)
--------------------------------------

Note that Wine needs to be patched with these hacks first, or it will crash due
to stack overflow issues:

* https://bugs.winehq.org/show_bug.cgi?id=47808#c12
  * https://bugs.winehq.org/show_bug.cgi?id=47808#c13