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guix system: Add 'reconfigure' action.

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* guix/scripts/system.scm (%system-profile): New variable.
  (switch-to-system, previous-grub-entries): New procedures.
  (unless-file-not-found): New macro.
  (show-help): Add 'reconfigure'.
  (guix-system): Handle it.
* gnu/system.scm: Export 'operating-system-activation-script'.
* doc/guix.texi (Invoking guix system): Document it.
This commit is contained in:
Ludovic Courtès
2014-06-27 00:06:46 +02:00
parent f01efec09a
commit b25937e318
3 changed files with 114 additions and 20 deletions
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12
doc/guix.texi
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@@ -3210,6 +3210,18 @@ operating system is instantiate. Currently the following values are
supported:
@table @code
@item reconfigure
Build the operating system described in @var{file}, activate it, and
switch to it@footnote{This action is usable only on systems already
running GNU.}.
This effects all the configuration specified in @var{file}: user
accounts, system services, global package list, setuid programs, etc.
It also adds a GRUB menu entry for the new OS configuration, and moves
entries for older configurations to a submenu---unless
@option{--no-grub} is passed.
@item build
Build the operating system's derivation, which includes all the
configuration files and programs needed to boot and run the system.