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doc: Update nar decompression examples. 

* doc/guix.texi (Invoking guix archive): Show /gzip URL.
Add cross-reference to "Invoking guix challenge".
(Invoking guix challenge): Show /lzip URL.

Signed-off-by: Ludovic Courtès <ludo@gnu.org>
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mikadoZero 2019-02-22 18:24:20 -05:00 committed by Ludovic Courtès
parent 1e7281108b
commit a37c59af62
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1 changed files with 6 additions and 5 deletions
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doc/guix.texi
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@ -4626,8 +4626,8 @@ served by @code{@value{SUBSTITUTE-SERVER}} to @file{/tmp/emacs}:
@example
$ wget -O - \
https://@value{SUBSTITUTE-SERVER}/nar/@dots{}-emacs-24.5 \
| bunzip2 | guix archive -x /tmp/emacs
https://@value{SUBSTITUTE-SERVER}/nar/gzip/@dots{}-emacs-24.5 \
| gunzip | guix archive -x /tmp/emacs
@end example
Single-item archives are different from multiple-item archives produced
@ -4637,7 +4637,8 @@ and they do @emph{not} embed a signature. Thus this operation does
unsafe.
The primary purpose of this operation is to facilitate inspection of
archive contents coming from possibly untrusted substitute servers.
archive contents coming from possibly untrusted substitute servers
(@pxref{Invoking guix challenge}).
@item --list
@itemx -t
@ -10573,8 +10574,8 @@ Alternately, we can do something along these lines (@pxref{Invoking guix
archive}):
@example
$ wget -q -O - https://@value{SUBSTITUTE-SERVER}/nar/@dots{}-git-2.5.0 \
| guix archive -x /tmp/git
$ wget -q -O - https://@value{SUBSTITUTE-SERVER}/nar/lzip/@dots{}-git-2.5.0 \
| lzip -d | guix archive -x /tmp/git
$ diff -ur --no-dereference /gnu/store/@dots{}-git.2.5.0 /tmp/git
@end example