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-rw-r--r--guix/git.scm86
1 files changed, 79 insertions, 7 deletions
diff --git a/guix/git.scm b/guix/git.scm
index 0666f0c0a9..e2daa78f6b 100644
--- a/guix/git.scm
+++ b/guix/git.scm
@@ -1,6 +1,6 @@
;;; GNU Guix --- Functional package management for GNU
;;; Copyright © 2017 Mathieu Othacehe <m.othacehe@gmail.com>
-;;; Copyright © 2018 Ludovic Courtès <ludo@gnu.org>
+;;; Copyright © 2018, 2019 Ludovic Courtès <ludo@gnu.org>
;;;
;;; This file is part of GNU Guix.
;;;
@@ -43,6 +43,11 @@
git-checkout-url
git-checkout-branch))
+;; XXX: Use this hack instead of #:autoload to avoid compilation errors.
+;; See <http://bugs.gnu.org/12202>.
+(module-autoload! (current-module)
+ '(git submodule) '(repository-submodules))
+
(define %repository-cache-directory
(make-parameter (string-append (cache-directory #:ensure? #f)
"/checkouts")))
@@ -57,11 +62,15 @@
(define* (url-cache-directory url
#:optional (cache-directory
- (%repository-cache-directory)))
+ (%repository-cache-directory))
+ #:key recursive?)
"Return the directory associated to URL in %repository-cache-directory."
(string-append
cache-directory "/"
- (bytevector->base32-string (sha256 (string->utf8 url)))))
+ (bytevector->base32-string
+ (sha256 (string->utf8 (if recursive?
+ (string-append "R:" url)
+ url))))))
(define (clone* url directory)
"Clone git repository at URL into DIRECTORY. Upon failure,
@@ -119,18 +128,62 @@ OID (roughly the commit hash) corresponding to REF."
(reset repository obj RESET_HARD)
(object-id obj))
+(define (call-with-repository directory proc)
+ (let ((repository #f))
+ (dynamic-wind
+ (lambda ()
+ (set! repository (repository-open directory)))
+ (lambda ()
+ (proc repository))
+ (lambda ()
+ (repository-close! repository)))))
+
+(define-syntax-rule (with-repository directory repository exp ...)
+ "Open the repository at DIRECTORY and bind REPOSITORY to it within the
+dynamic extent of EXP."
+ (call-with-repository directory
+ (lambda (repository) exp ...)))
+
+(define* (update-submodules repository
+ #:key (log-port (current-error-port)))
+ "Update the submodules of REPOSITORY, a Git repository object."
+ ;; Guile-Git < 0.2.0 did not have (git submodule).
+ (if (false-if-exception (resolve-interface '(git submodule)))
+ (for-each (lambda (name)
+ (let ((submodule (submodule-lookup repository name)))
+ (format log-port (G_ "updating submodule '~a'...~%")
+ name)
+ (submodule-update submodule)
+
+ ;; Recurse in SUBMODULE.
+ (let ((directory (string-append
+ (repository-working-directory repository)
+ "/" (submodule-path submodule))))
+ (with-repository directory repository
+ (update-submodules repository
+ #:log-port log-port)))))
+ (repository-submodules repository))
+ (format (current-error-port)
+ (G_ "Support for submodules is missing; \
+please upgrade Guile-Git.~%"))))
+
(define* (update-cached-checkout url
#:key
(ref '(branch . "master"))
+ recursive?
+ (log-port (%make-void-port "w"))
(cache-directory
(url-cache-directory
- url (%repository-cache-directory))))
+ url (%repository-cache-directory)
+ #:recursive? recursive?)))
"Update the cached checkout of URL to REF in CACHE-DIRECTORY. Return two
values: the cache directory name, and the SHA1 commit (a string) corresponding
to REF.
REF is pair whose key is [branch | commit | tag] and value the associated
-data, respectively [<branch name> | <sha1> | <tag name>]."
+data, respectively [<branch name> | <sha1> | <tag name>].
+
+When RECURSIVE? is true, check out submodules as well, if any."
(define canonical-ref
;; We used to require callers to specify "origin/" for each branch, which
;; made little sense since the cache should be transparent to them. So
@@ -150,6 +203,8 @@ data, respectively [<branch name> | <sha1> | <tag name>]."
;; Only fetch remote if it has not been cloned just before.
(when cache-exists?
(remote-fetch (remote-lookup repository "origin")))
+ (when recursive?
+ (update-submodules repository #:log-port log-port))
(let ((oid (switch-to-ref repository canonical-ref)))
;; Reclaim file descriptors and memory mappings associated with
@@ -162,6 +217,7 @@ data, respectively [<branch name> | <sha1> | <tag name>]."
(define* (latest-repository-commit store url
#:key
+ recursive?
(log-port (%make-void-port "w"))
(cache-directory
(%repository-cache-directory))
@@ -172,21 +228,33 @@ reference to be checkout, once the repository is fetched, is specified by REF.
REF is pair whose key is [branch | commit | tag] and value the associated
data, respectively [<branch name> | <sha1> | <tag name>].
+When RECURSIVE? is true, check out submodules as well, if any.
+
Git repositories are kept in the cache directory specified by
%repository-cache-directory parameter.
Log progress and checkout info to LOG-PORT."
(define (dot-git? file stat)
(and (string=? (basename file) ".git")
- (eq? 'directory (stat:type stat))))
+ (or (eq? 'directory (stat:type stat))
+
+ ;; Submodule checkouts end up with a '.git' regular file that
+ ;; contains metadata about where their actual '.git' directory
+ ;; lives.
+ (and recursive?
+ (eq? 'regular (stat:type stat))))))
(format log-port "updating checkout of '~a'...~%" url)
(let*-values
(((checkout commit)
(update-cached-checkout url
+ #:recursive? recursive?
#:ref ref
#:cache-directory
- (url-cache-directory url cache-directory)))
+ (url-cache-directory url cache-directory
+ #:recursive?
+ recursive?)
+ #:log-port log-port))
((name)
(url+commit->name url commit)))
(format log-port "retrieved commit ~a~%" commit)
@@ -244,3 +312,7 @@ Log progress and checkout info to LOG-PORT."
`(commit . ,commit)
`(branch . ,branch))
#:log-port (current-error-port)))))
+
+;; Local Variables:
+;; eval: (put 'with-repository 'scheme-indent-function 2)
+;; End: