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linux-initrd: Ensure that the guile used in the initrd is referenced. 

By referencing guile from the initrd output explicitly, it will be present in
the store when this initrd is used. If the exact guile used within the initrd
isn't present in the store, then after root is switched during the boot
process, loading modules (such as (ice-9 popen)) won't work.

This fixes guix-patches bug #28399, "Fix mysql activation, and add a basic
test".

* gnu/system/linux-initrd.scm (expression->initrd)[builder]: Write out a file
  called references in to the initrd output, which includes the store path for
  guile.
master
Christopher Baines 2017-10-08 09:52:24 +01:00
parent fe90a6e08b
commit b36e06c2b0
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gnu/system/linux-initrd.scm
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@ -78,6 +78,19 @@ the derivations referenced by EXP are automatically copied to the initrd."
(use-modules (gnu build linux-initrd))
(mkdir #$output)
;; The guile used in the initrd must be present in the store, so
;; that module loading works once the root is switched.
;;
;; To ensure that is the case, add an explicit reference to the
;; guile package used in the initrd to the output.
;;
;; This fixes guix-patches bug #28399, "Fix mysql activation, and
;; add a basic test".
(call-with-output-file (string-append #$ output "/references")
(lambda (port)
(simple-format port "~A\n" #$guile)))
(build-initrd (string-append #$output "/initrd")
#:guile #$guile
#:init #$init