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pack: Extract builder code from self-contained-tarball.

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This is made to allow reusing it for the debian-archive pack format, added in
a subsequent commit.

* guix/scripts/pack.scm (self-contained-tarball/builder): New procedure,
containing the build code extracted from self-contained-tarball.
(self-contained-tarball): Use the above procedure.
This commit is contained in:
Maxim Cournoyer 2021-06-15 10:13:29 -04:00
parent e2ff126588
commit 91e8372838
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GPG key ID: 1260E46482E63562
1 changed files with 130 additions and 118 deletions
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248
guix/scripts/pack.scm
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@ -172,22 +172,17 @@ (define db-file
(computed-file "store-database" build
#:options `(#:references-graphs ,(zip labels items))))
(define* (self-contained-tarball name profile
#:key target
(profile-name "guix-profile")
deduplicate?
entry-point
(compressor (first %compressors))
localstatedir?
(symlinks '())
(archiver tar))
"Return a self-contained tarball containing a store initialized with the
closure of PROFILE, a derivation. The tarball contains /gnu/store; if
LOCALSTATEDIR? is true, it also contains /var/guix, including /var/guix/db
with a properly initialized store database.
SYMLINKS must be a list of (SOURCE -> TARGET) tuples denoting symlinks to be
added to the pack."
;;;
;;; Tarball format.
;;;
(define* (self-contained-tarball/builder profile
#:key (profile-name "guix-profile")
(compressor (first %compressors))
localstatedir?
(symlinks '())
(archiver tar))
"Return the G-Expression of the builder used for self-contained-tarball."
(define database
(and localstatedir?
(file-append (store-database (list profile))
@ -209,125 +204,142 @@ (define (import-module? module)
(and (not-config? module)
(not (equal? '(guix store deduplication) module))))
(define build
(with-imported-modules (source-module-closure
`((guix build utils)
(guix build union)
(gnu build install))
#:select? import-module?)
#~(begin
(use-modules (guix build utils)
((guix build union) #:select (relative-file-name))
(gnu build install)
(srfi srfi-1)
(srfi srfi-26)
(ice-9 match))
(with-imported-modules (source-module-closure
`((guix build utils)
(guix build union)
(gnu build install))
#:select? import-module?)
#~(begin
(use-modules (guix build utils)
((guix build union) #:select (relative-file-name))
(gnu build install)
(srfi srfi-1)
(srfi srfi-26)
(ice-9 match))
(define %root "root")
(define %root "root")
(define symlink->directives
;; Return "populate directives" to make the given symlink and its
;; parent directories.
(match-lambda
((source '-> target)
(let ((target (string-append #$profile "/" target))
(parent (dirname source)))
;; Never add a 'directory' directive for "/" so as to
;; preserve its ownnership when extracting the archive (see
;; below), and also because this would lead to adding the
;; same entries twice in the tarball.
`(,@(if (string=? parent "/")
'()
`((directory ,parent)))
(,source
-> ,(relative-file-name parent target)))))))
(define symlink->directives
;; Return "populate directives" to make the given symlink and its
;; parent directories.
(match-lambda
((source '-> target)
(let ((target (string-append #$profile "/" target))
(parent (dirname source)))
;; Never add a 'directory' directive for "/" so as to
;; preserve its ownnership when extracting the archive (see
;; below), and also because this would lead to adding the
;; same entries twice in the tarball.
`(,@(if (string=? parent "/")
'()
`((directory ,parent)))
(,source
-> ,(relative-file-name parent target)))))))
(define directives
;; Fully-qualified symlinks.
(append-map symlink->directives '#$symlinks))
(define directives
;; Fully-qualified symlinks.
(append-map symlink->directives '#$symlinks))
;; The --sort option was added to GNU tar in version 1.28, released
;; 2014-07-28. For testing, we use the bootstrap tar, which is
;; older and doesn't support it.
(define tar-supports-sort?
(zero? (system* (string-append #+archiver "/bin/tar")
"cf" "/dev/null" "--files-from=/dev/null"
"--sort=name")))
;; The --sort option was added to GNU tar in version 1.28, released
;; 2014-07-28. For testing, we use the bootstrap tar, which is
;; older and doesn't support it.
(define tar-supports-sort?
(zero? (system* (string-append #+archiver "/bin/tar")
"cf" "/dev/null" "--files-from=/dev/null"
"--sort=name")))
;; Make sure non-ASCII file names are properly handled.
#+set-utf8-locale
;; Make sure non-ASCII file names are properly handled.
#+set-utf8-locale
;; Add 'tar' to the search path.
(setenv "PATH" #+(file-append archiver "/bin"))
;; Add 'tar' to the search path.
(setenv "PATH" #+(file-append archiver "/bin"))
;; Note: there is not much to gain here with deduplication and there
;; is the overhead of the '.links' directory, so turn it off.
;; Furthermore GNU tar < 1.30 sometimes fails to extract tarballs
;; with hard links:
;; <http://lists.gnu.org/archive/html/bug-tar/2017-11/msg00009.html>.
(populate-single-profile-directory %root
#:profile #$profile
#:profile-name #$profile-name
#:closure "profile"
#:database #+database)
;; Note: there is not much to gain here with deduplication and there
;; is the overhead of the '.links' directory, so turn it off.
;; Furthermore GNU tar < 1.30 sometimes fails to extract tarballs
;; with hard links:
;; <http://lists.gnu.org/archive/html/bug-tar/2017-11/msg00009.html>.
(populate-single-profile-directory %root
#:profile #$profile
#:profile-name #$profile-name
#:closure "profile"
#:database #+database)
;; Create SYMLINKS.
(for-each (cut evaluate-populate-directive <> %root)
directives)
;; Create SYMLINKS.
(for-each (cut evaluate-populate-directive <> %root)
directives)
;; Create the tarball. Use GNU format so there's no file name
;; length limitation.
(with-directory-excursion %root
(exit
(zero? (apply system* "tar"
#+@(if (compressor-command compressor)
#~("-I"
(string-join
'#+(compressor-command compressor)))
#~())
"--format=gnu"
;; Create the tarball. Use GNU format so there's no file name
;; length limitation.
(with-directory-excursion %root
(apply invoke "tar"
#+@(if (compressor-command compressor)
#~("-I"
(string-join
'#+(compressor-command compressor)))
#~())
"--format=gnu"
;; Avoid non-determinism in the archive.
;; Use mtime = 1, not zero, because that is what the daemon
;; does for files in the store (see the 'mtimeStore' constant
;; in local-store.cc.)
(if tar-supports-sort? "--sort=name" "--mtime=@1")
"--owner=root:0"
"--group=root:0"
"--check-links"
"-cvf" #$output
;; Avoid adding / and /var to the tarball, so
;; that the ownership and permissions of those
;; directories will not be overwritten when
;; extracting the archive. Do not include /root
;; because the root account might have a
;; different home directory.
#$@(if localstatedir?
'("./var/guix")
'())
;; Avoid non-determinism in the archive. Use
;; mtime = 1, not zero, because that is what the
;; daemon does for files in the store (see the
;; 'mtimeStore' constant in local-store.cc.)
(if tar-supports-sort? "--sort=name" "--mtime=@1")
"--mtime=@1" ;for files in /var/guix
"--owner=root:0"
"--group=root:0"
(string-append "." (%store-directory))
"--check-links"
"-cvf" #$output
;; Avoid adding / and /var to the tarball, so
;; that the ownership and permissions of those
;; directories will not be overwritten when
;; extracting the archive. Do not include /root
;; because the root account might have a
;; different home directory.
#$@(if localstatedir?
'("./var/guix")
'())
(delete-duplicates
(filter-map (match-lambda
(('directory directory)
(string-append "." directory))
((source '-> _)
(string-append "." source))
(_ #f))
directives)))))))
(string-append "." (%store-directory))
(delete-duplicates
(filter-map (match-lambda
(('directory directory)
(string-append "." directory))
((source '-> _)
(string-append "." source))
(_ #f))
directives)))))))))
(define* (self-contained-tarball name profile
#:key target
(profile-name "guix-profile")
deduplicate?
entry-point
(compressor (first %compressors))
localstatedir?
(symlinks '())
(archiver tar))
"Return a self-contained tarball containing a store initialized with the
closure of PROFILE, a derivation. The tarball contains /gnu/store; if
LOCALSTATEDIR? is true, it also contains /var/guix, including /var/guix/db
with a properly initialized store database.
SYMLINKS must be a list of (SOURCE -> TARGET) tuples denoting symlinks to be
added to the pack."
(when entry-point
(warning (G_ "entry point not supported in the '~a' format~%")
'tarball))
(gexp->derivation (string-append name ".tar"
(compressor-extension compressor))
build
#:target target
#:references-graphs `(("profile" ,profile))))
(gexp->derivation
(string-append name ".tar"
(compressor-extension compressor))
(self-contained-tarball/builder profile
#:profile-name profile-name
#:compressor compressor
#:localstatedir? localstatedir?
#:symlinks symlinks
#:archiver archiver)
#:target target
#:references-graphs `(("profile" ,profile))))
(define (singularity-environment-file profile)
"Return a shell script that defines the environment variables corresponding