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Subject: [bug#29100] [PATCH 2/3] install: Use overlayfs instead of unionfs.
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Date: Thu, 2 Nov 2017 18:44:05 +0100
From: Danny Milosavljevic <dannym@scratchpost.org>
Message-ID: <20171102184405.05a67223@scratchpost.org>
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	<20171101083952.5376-2-h.goebel@crazy-compilers.com>
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To: Hartmut Goebel <h.goebel@crazy-compilers.com>
Cc: 29100@debbugs.gnu.org

[...]
> -      (let ((rw-dir (string-append target #$%backing-directory)))
> +      (let* ((rw-dir (string-append target #$%backing-directory))
> +             ;; FIXME: calculate work-dir from backing-directory:
> +             ;; normpath(backing-directory + "../.overlayfs-workdir")
> +             (work-dir (string-append target "/tmp/.overlayfs-workdir")))

What about the FIXME?