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authorLudovic Courtès <ludovic.courtes@inria.fr>2021-09-14 10:28:30 +0200
committerLudovic Courtès <ludo@gnu.org>2021-09-14 11:50:58 +0200
commit98712c14fe3517a48603a12eb2e64db305a54fe5 (patch)
treecbba65af1a9af27675bcdd4ad453c6d7dfd94bb7 /etc/disarchive-manifest.scm
parent3b758dd22d691964ebbc0ce9521508fbc397263a (diff)
etc: Add 'disarchive-manifest.scm'.
* etc/disarchive-manifest.scm: New file. * Makefile.am (EXTRA_DIST): Add it.
Diffstat (limited to 'etc/disarchive-manifest.scm')
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diff --git a/etc/disarchive-manifest.scm b/etc/disarchive-manifest.scm
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+;;; GNU Guix --- Functional package management for GNU
+;;; Copyright © 2021 Ludovic Courtès <ludo@gnu.org>
+;;;
+;;; This file is part of GNU Guix.
+;;;
+;;; GNU Guix is free software; you can redistribute it and/or modify it
+;;; under the terms of the GNU General Public License as published by
+;;; the Free Software Foundation; either version 3 of the License, or (at
+;;; your option) any later version.
+;;;
+;;; GNU Guix is distributed in the hope that it will be useful, but
+;;; WITHOUT ANY WARRANTY; without even the implied warranty of
+;;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+;;; GNU General Public License for more details.
+;;;
+;;; You should have received a copy of the GNU General Public License
+;;; along with GNU Guix. If not, see <http://www.gnu.org/licenses/>.
+
+;;; This file returns a manifest that builds a directory containing Disarchive
+;;; metadata for all the tarballs packages refer to.
+
+(use-modules (srfi srfi-1) (ice-9 match)
+ (guix packages) (guix gexp) (guix profiles)
+ (guix base16)
+ (gnu packages))
+
+(include "source-manifest.scm")
+
+(define (tarball-origin? origin)
+ (match (origin-actual-file-name origin)
+ (#f #f)
+ ((? string? file)
+ ;; As of version 0.2.1, Disarchive can only deal with raw tarballs and
+ ;; gzip-compressed tarballs.
+ (and (origin-hash origin)
+ (or (string-suffix? ".tar.gz" file)
+ (string-suffix? ".tgz" file)
+ (string-suffix? ".tar" file))))))
+
+(define (origin->disarchive origin)
+ "Return a directory containing Disarchive metadata for ORIGIN, a tarball, or
+an empty directory if ORIGIN could not be disassembled."
+ (define file-name
+ (let ((hash (origin-hash origin)))
+ (string-append (symbol->string (content-hash-algorithm hash))
+ "/"
+ (bytevector->base16-string
+ (content-hash-value hash)))))
+
+ (define disarchive
+ (specification->package "disarchive"))
+
+ (define build
+ (with-imported-modules '((guix build utils))
+ #~(begin
+ (use-modules (guix build utils)
+ (srfi srfi-34))
+
+ (define tarball
+ #+(upstream-origin origin))
+
+ (define file-name
+ (string-append #$output "/" #$file-name))
+
+ (define profile
+ #+(profile (content (packages->manifest (list disarchive)))))
+
+ (mkdir-p (dirname file-name))
+ (setenv "PATH" (string-append profile "/bin"))
+ (setenv "GUILE_LOAD_PATH"
+ (string-append profile "/share/guile/site/"
+ (effective-version)))
+ (setenv "GUILE_LOAD_COMPILED_PATH"
+ (string-append profile "/lib/guile/" (effective-version)
+ "/site-ccache"))
+
+ (guard (c ((invoke-error? c)
+ ;; Sometimes Disarchive fails with "could not find Gzip
+ ;; compressor". When that happens, produce an empty
+ ;; directory instead of failing.
+ (report-invoke-error c)
+ (delete-file file-name)))
+ (with-output-to-file file-name
+ (lambda ()
+ ;; Disarchive records the tarball name in its output. Thus,
+ ;; strip the hash from TARBALL.
+ (let ((short-name (strip-store-file-name tarball)))
+ (symlink tarball short-name)
+ (invoke "disarchive" "disassemble" short-name))))))))
+
+ (computed-file (match (origin-actual-file-name origin)
+ ((? string? str) (string-append str ".dis"))
+ (#f "anonymous-tarball.dis"))
+ build))
+
+(define (disarchive-collection origins)
+ "Return a directory containing all the Disarchive metadata for ORIGINS."
+ (directory-union "disarchive-collection"
+ (filter-map (lambda (origin)
+ (and (tarball-origin? origin)
+ (origin->disarchive origin)))
+ origins)
+ #:copy? #t))
+
+
+;; The manifest containing Disarchive data.
+(let ((origins (all-origins)))
+ (manifest
+ (list (manifest-entry
+ (name "disarchive-collection")
+ (version (length origins))
+ (item (disarchive-collection origins))))))