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guix system: "list-generations" displays provenance info.

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* guix/scripts/pull.scm (channel-commit-hyperlink): Export.
* guix/scripts/system.scm (display-system-generation)
[display-channel]: New procedure.
Read the "provenance" file of GENERATION and display channel info and
the configuration file name when available.
This commit is contained in:
Ludovic Courtès 2019-11-30 23:07:39 +01:00
parent eaabc5e87f
commit 60f4564a63
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GPG key ID: 090B11993D9AEBB5
2 changed files with 48 additions and 2 deletions
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1
guix/scripts/pull.scm
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@ -60,6 +60,7 @@ (define-module (guix scripts pull)
#:use-module (ice-9 format)
#:export (display-profile-content
channel-list
channel-commit-hyperlink
with-git-error-handling
guix-pull))

49
guix/scripts/system.scm
View file

@ -36,9 +36,11 @@ (define-module (guix scripts system)
#:use-module (guix records)
#:use-module (guix profiles)
#:use-module (guix scripts)
#:use-module (guix channels)
#:use-module (guix scripts build)
#:autoload (guix scripts package) (delete-generations
delete-matching-generations)
#:autoload (guix scripts pull) (channel-commit-hyperlink)
#:use-module (guix graph)
#:use-module (guix scripts graph)
#:use-module (guix scripts system reconfigure)
@ -456,9 +458,30 @@ (define (shepherd-service-node-type services)
;;; Generations.
;;;
(define (sexp->channel sexp)
"Return the channel corresponding to SEXP, an sexp as found in the
\"provenance\" file produced by 'provenance-service-type'."
(match sexp
(('channel ('name name)
('url url)
('branch branch)
('commit commit))
(channel (name name) (url url)
(branch branch) (commit commit)))))
(define* (display-system-generation number
#:optional (profile %system-profile))
"Display a summary of system generation NUMBER in a human-readable format."
(define (display-channel channel)
(format #t " ~a:~%" (channel-name channel))
(format #t (G_ " repository URL: ~a~%") (channel-url channel))
(when (channel-branch channel)
(format #t (G_ " branch: ~a~%") (channel-branch channel)))
(format #t (G_ " commit: ~a~%")
(if (supports-hyperlinks?)
(channel-commit-hyperlink channel)
(channel-commit channel))))
(unless (zero? number)
(let* ((generation (generation-file-name profile number))
(params (read-boot-parameters-file generation))
@ -468,7 +491,13 @@ (define* (display-system-generation number
(root-device (if (bytevector? root)
(uuid->string root)
root))
(kernel (boot-parameters-kernel params)))
(kernel (boot-parameters-kernel params))
(provenance (catch 'system-error
(lambda ()
(call-with-input-file
(string-append generation "/provenance")
read))
(const #f))))
(display-generation profile number)
(format #t (G_ " file name: ~a~%") generation)
(format #t (G_ " canonical file name: ~a~%") (readlink* generation))
@ -495,7 +524,23 @@ (define* (display-system-generation number
(else
root-device)))
(format #t (G_ " kernel: ~a~%") kernel))))
(format #t (G_ " kernel: ~a~%") kernel)
(match provenance
(#f #t)
(('provenance ('version 0)
('channels channels ...)
('configuration-file config-file))
(unless (null? channels)
;; TRANSLATORS: Here "channel" is the same terminology as used in
;; "guix describe" and "guix pull --channels".
(format #t (G_ " channels:~%"))
(for-each display-channel (map sexp->channel channels)))
(when config-file
(format #t (G_ " configuration file: ~a~%")
(if (supports-hyperlinks?)
(file-hyperlink config-file)
config-file))))))))
(define* (list-generations pattern #:optional (profile %system-profile))
"Display in a human-readable format all the system generations matching