From: Hartmut Goebel <h.goebel@crazy-compilers.com>
To: guix-devel <guix-devel@gnu.org>
Subject: What is wrong with these few lines of guile code?
Date: Tue, 31 Oct 2017 14:41:46 +0100 [thread overview]
Message-ID: <a11d7a2e-35ff-1333-9238-c332c6d8d163@crazy-compilers.com> (raw)
Hallo,
i replaced the code of gnu/system/install.scm(make-cow-store target) [1]
with the code below. Now when running this code (which is triggered by
"herd start cow-store /mnt" in the installation-os)|I get this error:
|
herd: exception caught while executing 'start' on service 'cow-store':
ERROR: Unbound variable: gexp
What is wrong with this code? (Parentheses are matching, of course :-)
[1]
https://git.savannah.gnu.org/cgit/guix.git/tree/gnu/system/install.scm#n70
(define (make-cow-store target)
"Return a gexp that makes the store copy-on-write, using TARGET as the
backing store. This is useful when TARGET is on a hard disk, whereas the
current store is on a RAM disk."
(define (set-store-permissions directory)
;; Set the right perms on DIRECTORY to use it as the store.
#~(begin
(chown #$directory 0 30000) ;use the fixed
'guixbuild' GID
(chmod #$directory #o1775)))
#~(begin
;; Bind-mount TARGET's /tmp in case we need space to build things.
(let ((tmpdir (string-append #$target "/tmp")))
(mkdir-p tmpdir)
(mount tmpdir "/tmp" "none" MS_BIND))
(let* ((rw-dir (string-append target #$%backing-directory))
;; FIXME: calculate work-dir from backing-directory:
;; normpath(backing-directory + "../.overlayfs-workdir")
(work-dir (string-append target "/tmp/.overlayfs-workdir")))
(mkdir-p rw-dir)
(mkdir-p work-dir)
(mkdir-p "/.rw-store")
#$(set-store-permissions #~rw-dir)
#$(set-store-permissions "/.rw-store")
;; Mount the overlay, then atomically make it the store.
(mount "none" "/.rw-store" "overlay"
(string-append "lowerdir=" #$(%store-prefix)
"upperdir=" #~rw-dir ","
"workdir=" #~work-dir))
(mount "/.rw-store" #$(%store-prefix) "" MS_MOVE)
(rmdir "/.rw-store"))))
--
Regards
Hartmut Goebel
| Hartmut Goebel | h.goebel@crazy-compilers.com |
| www.crazy-compilers.com | compilers which you thought are impossible |
next reply other threads:[~2017-10-31 13:42 UTC|newest]
Thread overview: 6+ messages / expand[flat|nested] mbox.gz Atom feed top
2017-10-31 13:41 Hartmut Goebel [this message]
2017-10-31 14:02 ` What is wrong with these few lines of guile code? Mike
2017-10-31 17:50 ` Christopher Baines
2017-11-03 14:34 ` Hartmut Goebel
2017-11-03 16:09 ` Ricardo Wurmus
2017-11-04 11:46 ` Pjotr Prins
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