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-rw-r--r--guix/channels.scm178
1 files changed, 123 insertions, 55 deletions
diff --git a/guix/channels.scm b/guix/channels.scm
index 0c84eed477..05226e766b 100644
--- a/guix/channels.scm
+++ b/guix/channels.scm
@@ -1,5 +1,5 @@
;;; GNU Guix --- Functional package management for GNU
-;;; Copyright © 2018, 2019, 2020 Ludovic Courtès <ludo@gnu.org>
+;;; Copyright © 2018, 2019, 2020, 2021 Ludovic Courtès <ludo@gnu.org>
;;; Copyright © 2018 Ricardo Wurmus <rekado@elephly.net>
;;; Copyright © 2019 Jan (janneke) Nieuwenhuizen <janneke@gnu.org>
;;;
@@ -47,6 +47,7 @@
#:use-module (srfi srfi-26)
#:use-module (srfi srfi-34)
#:use-module (srfi srfi-35)
+ #:autoload (guix describe) (current-channels) ;XXX: circular dep
#:autoload (guix self) (whole-package make-config.scm)
#:autoload (guix inferior) (gexp->derivation-in-inferior) ;FIXME: circular dep
#:autoload (guix quirks) (%quirks %patches applicable-patch? apply-patch)
@@ -91,6 +92,9 @@
ensure-forward-channel-update
profile-channels
+ manifest-entry-channel
+ sexp->channel
+ channel->code
channel-news-entry?
channel-news-entry-commit
@@ -341,6 +345,18 @@ commits)...~%")
(progress-reporter/bar (length commits)))
+ (define authentic-commits
+ ;; Consider the currently-used commit of CHANNEL as authentic so
+ ;; authentication can skip it and all its closure.
+ (match (find (lambda (candidate)
+ (eq? (channel-name candidate) (channel-name channel)))
+ (current-channels))
+ (#f '())
+ (channel
+ (if (channel-commit channel)
+ (list (channel-commit channel))
+ '()))))
+
;; XXX: Too bad we need to re-open CHECKOUT.
(with-repository checkout repository
(authenticate-repository repository
@@ -351,6 +367,7 @@ commits)...~%")
#:keyring-reference
(string-append keyring-reference-prefix
keyring-reference)
+ #:authentic-commits authentic-commits
#:make-reporter make-reporter
#:cache-key cache-key)))
@@ -623,16 +640,23 @@ that unconditionally resumes the continuation."
(values (run-with-store store mvalue)
store))))
-(define* (build-from-source name source
- #:key core verbose? commit
- (dependencies '()))
- "Return a derivation to build Guix from SOURCE, using the self-build script
-contained therein; use COMMIT as the version string. When CORE is true, build
-package modules under SOURCE using CORE, an instance of Guix."
+(define* (build-from-source instance
+ #:key core verbose? (dependencies '()))
+ "Return a derivation to build Guix from INSTANCE, using the self-build
+script contained therein. When CORE is true, build package modules under
+SOURCE using CORE, an instance of Guix."
+ (define name
+ (symbol->string
+ (channel-name (channel-instance-channel instance))))
+ (define source
+ (channel-instance-checkout instance))
+ (define commit
+ (channel-instance-commit instance))
+
;; Running the self-build script makes it easier to update the build
;; procedure: the self-build script of the Guix-to-be-installed contains the
;; right dependencies, build procedure, etc., which the Guix-in-use may not
- ;; be know.
+ ;; know.
(define script
(string-append source "/" %self-build-file))
@@ -658,7 +682,9 @@ package modules under SOURCE using CORE, an instance of Guix."
;; cause us to redo half of the BUILD computation several times just
;; to realize it gives the same result.
(with-trivial-build-handler
- (build source #:verbose? verbose? #:version commit
+ (build source
+ #:verbose? verbose? #:version commit
+ #:channel-metadata (channel-instance->sexp instance)
#:pull-version %pull-version))))
;; Build a set of modules that extend Guix using the standard method.
@@ -669,10 +695,7 @@ package modules under SOURCE using CORE, an instance of Guix."
"Return, as a monadic value, the derivation for INSTANCE, a channel
instance. DEPENDENCIES is a list of extensions providing Guile modules that
INSTANCE depends on."
- (build-from-source (symbol->string
- (channel-name (channel-instance-channel instance)))
- (channel-instance-checkout instance)
- #:commit (channel-instance-commit instance)
+ (build-from-source instance
#:core core
#:dependencies dependencies))
@@ -802,13 +825,36 @@ derivation."
(derivation-input-derivation input))))
(derivation-inputs drv))))
+(define (channel-instance->sexp instance)
+ "Return an sexp representation of INSTANCE, a channel instance."
+ (let* ((commit (channel-instance-commit instance))
+ (channel (channel-instance-channel instance))
+ (intro (channel-introduction channel)))
+ `(repository
+ (version 0)
+ (url ,(channel-url channel))
+ (branch ,(channel-branch channel))
+ (commit ,commit)
+ (name ,(channel-name channel))
+ ,@(if intro
+ `((introduction
+ (channel-introduction
+ (version 0)
+ (commit
+ ,(channel-introduction-first-signed-commit
+ intro))
+ (signer
+ ,(openpgp-format-fingerprint
+ (channel-introduction-first-commit-signer
+ intro))))))
+ '()))))
+
(define (channel-instances->manifest instances)
"Return a profile manifest with entries for all of INSTANCES, a list of
channel instances."
(define (instance->entry instance drv)
- (let* ((commit (channel-instance-commit instance))
- (channel (channel-instance-channel instance))
- (intro (channel-introduction channel)))
+ (let ((commit (channel-instance-commit instance))
+ (channel (channel-instance-channel instance)))
(manifest-entry
(name (symbol->string (channel-name channel)))
(version (string-take commit 7))
@@ -819,23 +865,7 @@ channel instances."
drv)
drv))
(properties
- `((source (repository
- (version 0)
- (url ,(channel-url channel))
- (branch ,(channel-branch channel))
- (commit ,commit)
- ,@(if intro
- `((introduction
- (channel-introduction
- (version 0)
- (commit
- ,(channel-introduction-first-signed-commit
- intro))
- (signer
- ,(openpgp-format-fingerprint
- (channel-introduction-first-commit-signer
- intro))))))
- '()))))))))
+ `((source ,(channel-instance->sexp instance)))))))
(mlet* %store-monad ((derivations (channel-instance-derivations instances))
(entries -> (map instance->entry instances derivations)))
@@ -900,35 +930,73 @@ to 'latest-channel-instances'."
validate-pull)))
(channel-instances->derivation instances)))
+(define* (sexp->channel sexp #:optional (name 'channel))
+ "Read SEXP, a provenance sexp as created by 'channel-instance->sexp'; use
+NAME as the channel name if SEXP does not specify it. Return #f if the sexp
+does not have the expected structure."
+ (match sexp
+ (('repository ('version 0)
+ ('url url)
+ ('branch branch)
+ ('commit commit)
+ rest ...)
+ ;; Historically channel sexps did not include the channel name. It's OK
+ ;; for channels created by 'channel-instances->manifest' because the
+ ;; entry name is the channel name, but it was missing for entries created
+ ;; by 'manifest-entry-with-provenance'.
+ (channel (name (match (assq 'name rest)
+ (#f name)
+ (('name name) name)))
+ (url url)
+ (commit commit)
+ (introduction
+ (match (assq 'introduction rest)
+ (#f #f)
+ (('introduction intro)
+ (sexp->channel-introduction intro))))))
+
+ (_ #f)))
+
+(define (manifest-entry-channel entry)
+ "Return the channel ENTRY corresponds to, or #f if that information is
+missing or unreadable. ENTRY must be an entry created by
+'channel-instances->manifest', with the 'source' property."
+ (let ((name (string->symbol (manifest-entry-name entry))))
+ (match (assq-ref (manifest-entry-properties entry) 'source)
+ ((sexp)
+ (sexp->channel sexp name))
+ (_
+ ;; No channel information for this manifest entry.
+ ;; XXX: Pre-0.15.0 Guix did not provide that information,
+ ;; but there's not much we can do in that case.
+ #f))))
+
(define (profile-channels profile)
"Return the list of channels corresponding to entries in PROFILE. If
PROFILE is not a profile created by 'guix pull', return the empty list."
- (filter-map (lambda (entry)
- (match (assq 'source (manifest-entry-properties entry))
- (('source ('repository ('version 0)
- ('url url)
- ('branch branch)
- ('commit commit)
- rest ...))
- (channel (name (string->symbol
- (manifest-entry-name entry)))
- (url url)
- (commit commit)
- (introduction
- (match (assq 'introduction rest)
- (#f #f)
- (('introduction intro)
- (sexp->channel-introduction intro))))))
-
- ;; No channel information for this manifest entry.
- ;; XXX: Pre-0.15.0 Guix did not provide that information,
- ;; but there's not much we can do in that case.
- (_ #f)))
-
+ (filter-map manifest-entry-channel
;; Show most recently installed packages last.
(reverse
(manifest-entries (profile-manifest profile)))))
+(define* (channel->code channel #:key (include-introduction? #t))
+ "Return code (an sexp) to build CHANNEL. When INCLUDE-INTRODUCTION? is
+true, include its introduction, if any."
+ (let ((intro (and include-introduction?
+ (channel-introduction channel))))
+ `(channel
+ (name ',(channel-name channel))
+ (url ,(channel-url 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))))))
+ '()))))
+
;;;
;;; News.