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-rw-r--r--gnu/services.scm26
-rw-r--r--guix/scripts/system.scm4
2 files changed, 25 insertions, 5 deletions
diff --git a/gnu/services.scm b/gnu/services.scm
index 27e5558231..f6dc56d940 100644
--- a/gnu/services.scm
+++ b/gnu/services.scm
@@ -31,6 +31,7 @@
#:use-module (guix sets)
#:use-module (guix ui)
#:use-module ((guix utils) #:select (source-properties->location))
+ #:autoload (guix openpgp) (openpgp-format-fingerprint)
#:use-module (guix modules)
#:use-module (gnu packages base)
#:use-module (gnu packages bash)
@@ -392,14 +393,31 @@ by the initrd once the root file system is mounted.")))
(define (channel->code channel)
"Return code to build CHANNEL, ready to be dropped in a 'channels.scm'
file."
- `(channel (name ',(channel-name channel))
- (url ,(channel-url channel))
- (branch ,(channel-branch channel))
- (commit ,(channel-commit channel))))
+ ;; Since the 'introduction' field is backward-incompatible, and since it's
+ ;; optional when using the "official" 'guix channel, include it if and only
+ ;; if we're referring to a different channel.
+ (let ((intro (and (not (equal? (list channel) %default-channels))
+ (channel-introduction channel))))
+ `(channel (name ',(channel-name channel))
+ (url ,(channel-url channel))
+ (branch ,(channel-branch channel))
+ (commit ,(channel-commit channel))
+ ,@(if intro
+ `((introduction
+ (make-channel-introduction
+ ,(channel-introduction-first-signed-commit intro)
+ (openpgp-fingerprint
+ ,(openpgp-format-fingerprint
+ (channel-introduction-first-commit-signer
+ intro))))))
+ '()))))
(define (channel->sexp channel)
"Return an sexp describing CHANNEL. The sexp is _not_ code and is meant to
be parsed by tools; it's potentially more future-proof than code."
+ ;; TODO: Add CHANNEL's introduction. Currently we can't do that because
+ ;; older 'guix system describe' expect exactly name/url/branch/commit
+ ;; without any additional fields.
`(channel (name ,(channel-name channel))
(url ,(channel-url channel))
(branch ,(channel-branch channel))
diff --git a/guix/scripts/system.scm b/guix/scripts/system.scm
index d9cf45da23..28aaa6e3bc 100644
--- a/guix/scripts/system.scm
+++ b/guix/scripts/system.scm
@@ -453,7 +453,9 @@ list of services."
(('channel ('name name)
('url url)
('branch branch)
- ('commit commit))
+ ('commit commit)
+ rest ...)
+ ;; XXX: In the future REST may include a channel introduction.
(channel (name name) (url url)
(branch branch) (commit commit)))))