guix system: Fix 'describe' when booting the latest generation.
Fixes a regression introduced in
9679123ce0
, whereby 'guix system describe'
would error out when /run/current-system points to /gnu/store/…-system,
which is the case when booting the latest generation or after
reconfigure.
* guix/scripts/system.scm (process-command): For 'describe'. Try
'generation-number' with and without the optional argument.
parent
ee92b0fb7d
commit
791069737c
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@ -1328,9 +1328,17 @@ argument list and OPTS is the option alist."
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(x (leave (G_ "wrong number of arguments~%"))))))
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(list-generations pattern)))
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((describe)
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;; Describe the running system, which is not necessarily the current
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;; generation. /run/current-system might point to
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;; /var/guix/profiles/system-N-link, or it might point directly to
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;; /gnu/store/…-system. Try both.
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(match (generation-number "/run/current-system" %system-profile)
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(0
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(leave (G_ "no system generation, nothing to describe~%")))
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(match (generation-number %system-profile)
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(0
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(leave (G_ "no system generation, nothing to describe~%")))
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(generation
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(display-system-generation generation))))
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(generation
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(display-system-generation generation))))
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((search)
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