pack: Use maximum compression; use '-n' for gzip.

* guix/scripts/pack.scm (<compressor>)[tar-option]: Remove.
[command]: New field.
(%compressors): Provide complete commands.  Use '-9' or equivalent for
each compressor; use '-n' for gzip.
(self-contained-tarball)[build]: Adjust accordingly.
This commit is contained in:
Ludovic Courtès 2017-03-14 21:31:10 +01:00
parent 796d2f2d0b
commit 36f213fb70
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1 changed files with 8 additions and 8 deletions

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@ -43,20 +43,19 @@
;; Type of a compression tool.
(define-record-type <compressor>
(compressor name package extension tar-option)
(compressor name package extension command)
compressor?
(name compressor-name) ;string (e.g., "gzip")
(package compressor-package) ;package
(extension compressor-extension) ;string (e.g., "lz")
(tar-option compressor-tar-option)) ;string (e.g., "--lzip")
(command compressor-command)) ;list (e.g., '("gzip" "-9n"))
(define %compressors
;; Available compression tools.
;; FIXME: Use '--no-name' for gzip.
(list (compressor "gzip" gzip "gz" "--gzip")
(compressor "lzip" lzip "lz" "--lzip")
(compressor "xz" xz "xz" "--xz")
(compressor "bzip2" bzip2 "bz2" "--bzip2")))
(list (compressor "gzip" gzip "gz" '("gzip" "-9n"))
(compressor "lzip" lzip "lz" '("lzip" "-9"))
(compressor "xz" xz "xz" '("xz" "-e"))
(compressor "bzip2" bzip2 "bz2" '("bzip2" "-9"))))
(define (lookup-compressor name)
"Return the compressor object called NAME. Error out if it could not be
@ -130,7 +129,8 @@ added to the pack."
;; length limitation.
(with-directory-excursion %root
(exit
(zero? (apply system* "tar" #$(compressor-tar-option compressor)
(zero? (apply system* "tar"
"-I" #$(string-join (compressor-command compressor))
"--format=gnu"
;; Avoid non-determinism in the archive. Use