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pull: Rewrite using gexps. 

* guix/scripts/pull.scm (unpack): Remove 'store' parameter.  Rewrite
  using 'gexp->derivation'.
  (what-to-build, indirect-root-added, build-and-install): New
  procedures.
  (guix-pull): Use it.
This commit is contained in:
Ludovic Courtès 2014-09-18 18:42:39 +02:00
parent 2f7a10db6d
commit cb823dd279
1 changed files with 47 additions and 39 deletions
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86
guix/scripts/pull.scm
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@ -23,6 +23,8 @@
#:use-module (guix packages) #:use-module (guix packages)
#:use-module (guix derivations) #:use-module (guix derivations)
#:use-module (guix download) #:use-module (guix download)
#:use-module (guix gexp)
#:use-module (guix monads)
#:use-module (gnu packages base) #:use-module (gnu packages base)
#:use-module (gnu packages guile) #:use-module (gnu packages guile)
#:use-module ((gnu packages bootstrap) #:use-module ((gnu packages bootstrap)
@ -38,34 +40,27 @@
"http://git.savannah.gnu.org/cgit/guix.git/snapshot/guix-master.tar.gz" "http://git.savannah.gnu.org/cgit/guix.git/snapshot/guix-master.tar.gz"
) )
(define* (unpack store tarball #:key verbose?) (define* (unpack tarball #:key verbose?)
"Return a derivation that unpacks TARBALL into STORE and compiles Scheme "Return a derivation that unpacks TARBALL into STORE and compiles Scheme
files." files."
(define builder (define builder
`(begin #~(begin
(use-modules (guix build pull)) (use-modules (guix build pull))
(build-guix (assoc-ref %outputs "out") (build-guix #$output #$tarball
(assoc-ref %build-inputs "tarball")
;; XXX: This is not perfect, enabling VERBOSE? means ;; XXX: This is not perfect, enabling VERBOSE? means
;; building a different derivation. ;; building a different derivation.
#:debug-port (if ',verbose? #:debug-port (if #$verbose?
(current-error-port) (current-error-port)
(%make-void-port "w")) (%make-void-port "w"))
#:tar (assoc-ref %build-inputs "tar") #:tar #$tar
#:gzip (assoc-ref %build-inputs "gzip") #:gzip #$gzip
#:gcrypt (assoc-ref %build-inputs "gcrypt")))) #:gcrypt #$libgcrypt)))
(build-expression->derivation store "guix-latest" builder (gexp->derivation "guix-latest" builder
#:inputs #:modules '((guix build pull)
`(("tar" ,(package-derivation store tar)) (guix build utils))))
("gzip" ,(package-derivation store gzip))
("gcrypt" ,(package-derivation store
libgcrypt))
("tarball" ,tarball))
#:modules '((guix build pull)
(guix build utils))))
;;; ;;;
@ -114,6 +109,33 @@ Download and deploy the latest version of Guix.\n"))
(lambda args (lambda args
(show-version-and-exit "guix pull"))))) (show-version-and-exit "guix pull")))))
(define what-to-build
(store-lift show-what-to-build))
(define indirect-root-added
(store-lift add-indirect-root))
(define* (build-and-install tarball config-dir
#:key verbose?)
"Build the tool from TARBALL, and install it in CONFIG-DIR."
(mlet* %store-monad ((source (unpack tarball #:verbose? verbose?))
(source-dir -> (derivation->output-path source))
(to-do? (what-to-build (list source))))
(if to-do?
(mlet* %store-monad ((built? (built-derivations (list source))))
(if built?
(mlet* %store-monad
((latest -> (string-append config-dir "/latest"))
(done (indirect-root-added latest)))
(switch-symlinks latest source-dir)
(format #t
(_ "updated ~a successfully deployed under `~a'~%")
%guix-package-name latest)
(return #t))
(leave (_ "failed to update Guix, check the build log~%"))))
(begin
(display (_ "Guix already up to date\n"))
(return #t)))))
(define (guix-pull . args) (define (guix-pull . args)
(define (parse-options) (define (parse-options)
;; Return the alist of option values. ;; Return the alist of option values.
@ -136,20 +158,6 @@ Download and deploy the latest version of Guix.\n"))
(if (assoc-ref opts 'bootstrap?) (if (assoc-ref opts 'bootstrap?)
%bootstrap-guile %bootstrap-guile
(canonical-package guile-2.0))))) (canonical-package guile-2.0)))))
(let* ((config-dir (config-directory)) (run-with-store store
(source (unpack store tarball (build-and-install tarball (config-directory)
#:verbose? (assoc-ref opts 'verbose?))) #:verbose? (assoc-ref opts 'verbose?))))))))
(source-dir (derivation->output-path source)))
(if (show-what-to-build store (list source))
(if (build-derivations store (list source))
(let ((latest (string-append config-dir "/latest")))
(add-indirect-root store latest)
(switch-symlinks latest source-dir)
(format #t
(_ "updated ~a successfully deployed under `~a'~%")
%guix-package-name latest)
#t)
(leave (_ "failed to update Guix, check the build log~%")))
(begin
(display (_ "Guix already up to date\n"))
#t))))))))