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Revert "guix: Compress and decompress xz archives in parallel." 

Threaded compression makes archives non-deterministic: the result depends on
the number of threads used for compressing.  See <https://bugs.gnu.org/31015>.

This reverts commit 63102406f2.
This commit is contained in:
Marius Bakke 2018-07-22 18:01:35 +02:00
parent 5285192150
commit e9be2c5409
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GPG Key ID: A2A06DF2A33A54FA
2 changed files with 5 additions and 7 deletions
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5
guix/scripts/pack.scm
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@ -1,6 +1,5 @@
;;; GNU Guix --- Functional package management for GNU
;;; Copyright © 2015, 2017, 2018 Ludovic Courtès <ludo@gnu.org>
;;; Copyright © 2017 Efraim Flashner <efraim@flashner.co.il>
;;; Copyright © 2017, 2018 Ricardo Wurmus <rekado@elephly.net>
;;; Copyright © 2018 Konrad Hinsen <konrad.hinsen@fastmail.net>
;;; Copyright © 2018 Chris Marusich <cmmarusich@gmail.com>
@ -69,7 +68,7 @@
(compressor "lzip" ".lz"
#~(#+(file-append lzip "/bin/lzip") "-9"))
(compressor "xz" ".xz"
#~(#+(file-append xz "/bin/xz") "-e -T0"))
#~(#+(file-append xz "/bin/xz") "-e"))
(compressor "bzip2" ".bz2"
#~(#+(file-append bzip2 "/bin/bzip2") "-9"))
(compressor "none" "" #f)))
@ -77,7 +76,7 @@
;; This one is only for use in this module, so don't put it in %compressors.
(define bootstrap-xz
(compressor "bootstrap-xz" ".xz"
#~(#+(file-append %bootstrap-coreutils&co "/bin/xz") "-e -T0")))
#~(#+(file-append %bootstrap-coreutils&co "/bin/xz") "-e")))
(define (lookup-compressor name)
"Return the compressor object called NAME. Error out if it could not be

7
guix/utils.scm
View File

@ -5,7 +5,6 @@
;;; Copyright © 2014 Ian Denhardt <ian@zenhack.net>
;;; Copyright © 2016 Mathieu Lirzin <mthl@gnu.org>
;;; Copyright © 2015 David Thompson <davet@gnu.org>
;;; Copyright © 2017 Efraim Flashner <efraim@flashner.co.il>
;;; Copyright © 2017 Mathieu Othacehe <m.othacehe@gmail.com>
;;; Copyright © 2018 Marius Bakke <mbakke@fastmail.com>
;;;
@ -176,7 +175,7 @@ a symbol such as 'xz."
(match compression
((or #f 'none) (values input '()))
('bzip2 (filtered-port `(,%bzip2 "-dc") input))
('xz (filtered-port `(,%xz "-dc" "-T0") input))
('xz (filtered-port `(,%xz "-dc") input))
('gzip (filtered-port `(,%gzip "-dc") input))
(else (error "unsupported compression scheme" compression))))
@ -186,7 +185,7 @@ a symbol such as 'xz."
(match compression
((or #f 'none) (values input '()))
('bzip2 (filtered-port `(,%bzip2 "-c") input))
('xz (filtered-port `(,%xz "-c" "-T0") input))
('xz (filtered-port `(,%xz "-c") input))
('gzip (filtered-port `(,%gzip "-c") input))
(else (error "unsupported compression scheme" compression))))
@ -243,7 +242,7 @@ program--e.g., '(\"--fast\")."
(match compression
((or #f 'none) (values output '()))
('bzip2 (filtered-output-port `(,%bzip2 "-c" ,@options) output))
('xz (filtered-output-port `(,%xz "-c" "-T0" ,@options) output))
('xz (filtered-output-port `(,%xz "-c" ,@options) output))
('gzip (filtered-output-port `(,%gzip "-c" ,@options) output))
(else (error "unsupported compression scheme" compression))))