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offload: Warn about the lack of zlib support.

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* guix/scripts/offload.scm (guix-offload): Print a warning when
'zlib-support?' returns false.
This commit is contained in:
Ludovic Courtès 2016-12-01 21:49:16 +01:00
parent f3cf860635
commit 0b72475301
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1 changed files with 7 additions and 0 deletions
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guix/scripts/offload.scm
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@ -24,6 +24,7 @@
#:use-module (ssh popen)
#:use-module (ssh dist)
#:use-module (ssh dist node)
#:use-module (ssh version)
#:use-module (guix config)
#:use-module (guix records)
#:use-module (guix store)
@ -634,6 +635,12 @@ allowed on MACHINE."
(and=> (passwd:dir (getpw (getuid)))
(cut setenv "HOME" <>))
;; We rely on protocol-level compression from libssh to optimize large data
;; transfers. Warn if it's missing.
(unless (zlib-support?)
(warning (_ "Guile-SSH lacks zlib support"))
(warning (_ "data transfers will *not* be compressed!")))
(match args
((system max-silent-time print-build-trace? build-timeout)
(let ((max-silent-time (string->number max-silent-time))