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author | Ludovic Courtès <ludo@gnu.org> | 2015-05-25 22:52:41 +0200 |
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committer | Ludovic Courtès <ludo@gnu.org> | 2015-05-25 22:52:41 +0200 |
commit | db030303b820297da23f8ce7101be88427eeef8d (patch) | |
tree | 471ad5271d7c026ebf5b698947a43c6d2df2e7c6 /doc | |
parent | 5f1087c48144e15d9e37d23b559017f9d7e326cd (diff) | |
download | gnu-guix-db030303b820297da23f8ce7101be88427eeef8d.tar gnu-guix-db030303b820297da23f8ce7101be88427eeef8d.tar.gz |
guix system: Add '--on-error'.
* guix/ui.scm (load*): Add #:on-error parameter.
[tag, error-string]: New variables.
Wrap 'load' call in 'call-with-prompt'. Pass TAG to 'make-stack'. Honor
ON-ERROR after 'report-load-error' call.
(report-load-error): Change to not exit on error. Make private.
* guix/scripts/system.scm (show-help, %options): Add --on-error.
(guix-system): Use 'load*' and pass it #:on-error.
Diffstat (limited to 'doc')
-rw-r--r-- | doc/guix.texi | 19 |
1 files changed, 19 insertions, 0 deletions
diff --git a/doc/guix.texi b/doc/guix.texi index a4aa1b67fa..a97436cc0c 100644 --- a/doc/guix.texi +++ b/doc/guix.texi @@ -5995,6 +5995,25 @@ For the @code{vm-image} and @code{disk-image} actions, create an image of the given @var{size}. @var{size} may be a number of bytes, or it may include a unit as a suffix (@pxref{Block size, size specifications,, coreutils, GNU Coreutils}). + +@item --on-error=@var{strategy} +Apply @var{strategy} when an error occurs when reading @var{file}. +@var{strategy} may be one of the following: + +@table @code +@item nothing-special +Report the error concisely and exit. This is the default strategy. + +@item backtrace +Likewise, but also display a backtrace. + +@item debug +Report the error and enter Guile's debugger. From there, you can run +commands such as @code{,bt} to get a backtrace, @code{,locals} to +display local variable values, and more generally inspect the program's +state. @xref{Debug Commands,,, guile, GNU Guile Reference Manual}, for +a list of available debugging commands. +@end table @end table Note that all the actions above, except @code{build} and @code{init}, |