6ce206cb92
* gnu/system.scm (union, file-union, links): Pass #:local-build? #t to 'derivation-expression'. * guix/derivations.scm (imported-files, compiled-modules): Likewise. * guix/profiles.scm (profile-derivation): Likewise.
346 lines
12 KiB
Scheme
346 lines
12 KiB
Scheme
;;; GNU Guix --- Functional package management for GNU
|
||
;;; Copyright © 2013, 2014 Ludovic Courtès <ludo@gnu.org>
|
||
;;; Copyright © 2013 Nikita Karetnikov <nikita@karetnikov.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/>.
|
||
|
||
(define-module (guix profiles)
|
||
#:use-module (guix utils)
|
||
#:use-module (guix records)
|
||
#:use-module (guix derivations)
|
||
#:use-module (guix packages)
|
||
#:use-module (ice-9 match)
|
||
#:use-module (ice-9 regex)
|
||
#:use-module (ice-9 ftw)
|
||
#:use-module (srfi srfi-1)
|
||
#:use-module (srfi srfi-9)
|
||
#:use-module (srfi srfi-19)
|
||
#:use-module (srfi srfi-26)
|
||
#:export (manifest make-manifest
|
||
manifest?
|
||
manifest-entries
|
||
|
||
<manifest-entry> ; FIXME: eventually make it internal
|
||
manifest-entry
|
||
manifest-entry?
|
||
manifest-entry-name
|
||
manifest-entry-version
|
||
manifest-entry-output
|
||
manifest-entry-path
|
||
manifest-entry-dependencies
|
||
|
||
manifest-pattern
|
||
manifest-pattern?
|
||
|
||
read-manifest
|
||
write-manifest
|
||
|
||
manifest-remove
|
||
manifest-installed?
|
||
manifest-matching-entries
|
||
manifest=?
|
||
|
||
profile-manifest
|
||
profile-derivation
|
||
generation-number
|
||
generation-numbers
|
||
previous-generation-number
|
||
generation-time
|
||
generation-file-name))
|
||
|
||
;;; Commentary:
|
||
;;;
|
||
;;; Tools to create and manipulate profiles---i.e., the representation of a
|
||
;;; set of installed packages.
|
||
;;;
|
||
;;; Code:
|
||
|
||
|
||
;;;
|
||
;;; Manifests.
|
||
;;;
|
||
|
||
(define-record-type <manifest>
|
||
(manifest entries)
|
||
manifest?
|
||
(entries manifest-entries)) ; list of <manifest-entry>
|
||
|
||
;; Convenient alias, to avoid name clashes.
|
||
(define make-manifest manifest)
|
||
|
||
(define-record-type* <manifest-entry> manifest-entry
|
||
make-manifest-entry
|
||
manifest-entry?
|
||
(name manifest-entry-name) ; string
|
||
(version manifest-entry-version) ; string
|
||
(output manifest-entry-output ; string
|
||
(default "out"))
|
||
(path manifest-entry-path) ; store path
|
||
(dependencies manifest-entry-dependencies ; list of store paths
|
||
(default '()))
|
||
(inputs manifest-entry-inputs ; list of inputs to build
|
||
(default '()))) ; this entry
|
||
|
||
(define-record-type* <manifest-pattern> manifest-pattern
|
||
make-manifest-pattern
|
||
manifest-pattern?
|
||
(name manifest-pattern-name) ; string
|
||
(version manifest-pattern-version ; string | #f
|
||
(default #f))
|
||
(output manifest-pattern-output ; string | #f
|
||
(default "out")))
|
||
|
||
(define (profile-manifest profile)
|
||
"Return the PROFILE's manifest."
|
||
(let ((file (string-append profile "/manifest")))
|
||
(if (file-exists? file)
|
||
(call-with-input-file file read-manifest)
|
||
(manifest '()))))
|
||
|
||
(define (manifest->sexp manifest)
|
||
"Return a representation of MANIFEST as an sexp."
|
||
(define (entry->sexp entry)
|
||
(match entry
|
||
(($ <manifest-entry> name version path output (deps ...))
|
||
(list name version path output deps))))
|
||
|
||
(match manifest
|
||
(($ <manifest> (entries ...))
|
||
`(manifest (version 1)
|
||
(packages ,(map entry->sexp entries))))))
|
||
|
||
(define (sexp->manifest sexp)
|
||
"Parse SEXP as a manifest."
|
||
(match sexp
|
||
(('manifest ('version 0)
|
||
('packages ((name version output path) ...)))
|
||
(manifest
|
||
(map (lambda (name version output path)
|
||
(manifest-entry
|
||
(name name)
|
||
(version version)
|
||
(output output)
|
||
(path path)))
|
||
name version output path)))
|
||
|
||
;; Version 1 adds a list of propagated inputs to the
|
||
;; name/version/output/path tuples.
|
||
(('manifest ('version 1)
|
||
('packages ((name version output path deps) ...)))
|
||
(manifest
|
||
(map (lambda (name version output path deps)
|
||
(manifest-entry
|
||
(name name)
|
||
(version version)
|
||
(output output)
|
||
(path path)
|
||
(dependencies deps)))
|
||
name version output path deps)))
|
||
|
||
(_
|
||
(error "unsupported manifest format" manifest))))
|
||
|
||
(define (read-manifest port)
|
||
"Return the packages listed in MANIFEST."
|
||
(sexp->manifest (read port)))
|
||
|
||
(define (write-manifest manifest port)
|
||
"Write MANIFEST to PORT."
|
||
(write (manifest->sexp manifest) port))
|
||
|
||
(define (entry-predicate pattern)
|
||
"Return a procedure that returns #t when passed a manifest entry that
|
||
matches NAME/OUTPUT/VERSION. OUTPUT and VERSION may be #f, in which case they
|
||
are ignored."
|
||
(match pattern
|
||
(($ <manifest-pattern> name version output)
|
||
(match-lambda
|
||
(($ <manifest-entry> entry-name entry-version entry-output)
|
||
(and (string=? entry-name name)
|
||
(or (not entry-output) (not output)
|
||
(string=? entry-output output))
|
||
(or (not version)
|
||
(string=? entry-version version))))))))
|
||
|
||
(define (manifest-remove manifest patterns)
|
||
"Remove entries for each of PATTERNS from MANIFEST. Each item in PATTERNS
|
||
must be a manifest-pattern."
|
||
(define (remove-entry pattern lst)
|
||
(remove (entry-predicate pattern) lst))
|
||
|
||
(make-manifest (fold remove-entry
|
||
(manifest-entries manifest)
|
||
patterns)))
|
||
|
||
(define (manifest-installed? manifest pattern)
|
||
"Return #t if MANIFEST has an entry matching PATTERN (a manifest-pattern),
|
||
#f otherwise."
|
||
(->bool (find (entry-predicate pattern)
|
||
(manifest-entries manifest))))
|
||
|
||
(define (manifest-matching-entries manifest patterns)
|
||
"Return all the entries of MANIFEST that match one of the PATTERNS."
|
||
(define predicates
|
||
(map entry-predicate patterns))
|
||
|
||
(define (matches? entry)
|
||
(any (lambda (pred)
|
||
(pred entry))
|
||
predicates))
|
||
|
||
(filter matches? (manifest-entries manifest)))
|
||
|
||
(define (manifest=? m1 m2)
|
||
"Return #t if manifests M1 and M2 are equal. This differs from 'equal?' in
|
||
that the 'inputs' field is ignored for the comparison, since it is know to
|
||
have no effect on the manifest contents."
|
||
(equal? (manifest->sexp m1)
|
||
(manifest->sexp m2)))
|
||
|
||
|
||
;;;
|
||
;;; Profiles.
|
||
;;;
|
||
|
||
(define* (lower-input store input #:optional (system (%current-system)))
|
||
"Lower INPUT so that it contains derivations instead of packages."
|
||
(match input
|
||
((name (? package? package))
|
||
`(,name ,(package-derivation store package system)))
|
||
((name (? package? package) output)
|
||
`(,name ,(package-derivation store package system)
|
||
,output))
|
||
(_ input)))
|
||
|
||
(define (profile-derivation store manifest)
|
||
"Return a derivation that builds a profile (aka. 'user environment') with
|
||
the given MANIFEST."
|
||
(define builder
|
||
`(begin
|
||
(use-modules (ice-9 pretty-print)
|
||
(guix build union))
|
||
|
||
(setvbuf (current-output-port) _IOLBF)
|
||
(setvbuf (current-error-port) _IOLBF)
|
||
|
||
(let ((output (assoc-ref %outputs "out"))
|
||
(inputs (map cdr %build-inputs)))
|
||
(union-build output inputs
|
||
#:log-port (%make-void-port "w"))
|
||
(call-with-output-file (string-append output "/manifest")
|
||
(lambda (p)
|
||
(pretty-print ',(manifest->sexp manifest) p))))))
|
||
|
||
(build-expression->derivation store "profile" builder
|
||
#:inputs
|
||
(append-map (match-lambda
|
||
(($ <manifest-entry> name version
|
||
output path deps (inputs ..1))
|
||
(map (cute lower-input store <>)
|
||
inputs))
|
||
(($ <manifest-entry> name version
|
||
output path deps)
|
||
;; Assume PATH and DEPS are
|
||
;; already valid.
|
||
`((,name ,path) ,@deps)))
|
||
(manifest-entries manifest))
|
||
#:modules '((guix build union))
|
||
#:local-build? #t))
|
||
|
||
(define (profile-regexp profile)
|
||
"Return a regular expression that matches PROFILE's name and number."
|
||
(make-regexp (string-append "^" (regexp-quote (basename profile))
|
||
"-([0-9]+)")))
|
||
|
||
(define (generation-number profile)
|
||
"Return PROFILE's number or 0. An absolute file name must be used."
|
||
(or (and=> (false-if-exception (regexp-exec (profile-regexp profile)
|
||
(basename (readlink profile))))
|
||
(compose string->number (cut match:substring <> 1)))
|
||
0))
|
||
|
||
(define (generation-numbers profile)
|
||
"Return the sorted list of generation numbers of PROFILE, or '(0) if no
|
||
former profiles were found."
|
||
(define* (scandir name #:optional (select? (const #t))
|
||
(entry<? (@ (ice-9 i18n) string-locale<?)))
|
||
;; XXX: Bug-fix version introduced in Guile v2.0.6-62-g139ce19.
|
||
(define (enter? dir stat result)
|
||
(and stat (string=? dir name)))
|
||
|
||
(define (visit basename result)
|
||
(if (select? basename)
|
||
(cons basename result)
|
||
result))
|
||
|
||
(define (leaf name stat result)
|
||
(and result
|
||
(visit (basename name) result)))
|
||
|
||
(define (down name stat result)
|
||
(visit "." '()))
|
||
|
||
(define (up name stat result)
|
||
(visit ".." result))
|
||
|
||
(define (skip name stat result)
|
||
;; All the sub-directories are skipped.
|
||
(visit (basename name) result))
|
||
|
||
(define (error name* stat errno result)
|
||
(if (string=? name name*) ; top-level NAME is unreadable
|
||
result
|
||
(visit (basename name*) result)))
|
||
|
||
(and=> (file-system-fold enter? leaf down up skip error #f name lstat)
|
||
(lambda (files)
|
||
(sort files entry<?))))
|
||
|
||
(match (scandir (dirname profile)
|
||
(cute regexp-exec (profile-regexp profile) <>))
|
||
(#f ; no profile directory
|
||
'(0))
|
||
(() ; no profiles
|
||
'(0))
|
||
((profiles ...) ; former profiles around
|
||
(sort (map (compose string->number
|
||
(cut match:substring <> 1)
|
||
(cute regexp-exec (profile-regexp profile) <>))
|
||
profiles)
|
||
<))))
|
||
|
||
(define (previous-generation-number profile number)
|
||
"Return the number of the generation before generation NUMBER of
|
||
PROFILE, or 0 if none exists. It could be NUMBER - 1, but it's not the
|
||
case when generations have been deleted (there are \"holes\")."
|
||
(fold (lambda (candidate highest)
|
||
(if (and (< candidate number) (> candidate highest))
|
||
candidate
|
||
highest))
|
||
0
|
||
(generation-numbers profile)))
|
||
|
||
(define (generation-file-name profile generation)
|
||
"Return the file name for PROFILE's GENERATION."
|
||
(format #f "~a-~a-link" profile generation))
|
||
|
||
(define (generation-time profile number)
|
||
"Return the creation time of a generation in the UTC format."
|
||
(make-time time-utc 0
|
||
(stat:ctime (stat (generation-file-name profile number)))))
|
||
|
||
;;; profiles.scm ends here
|