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gnu-maintenance: update-package-source: Only update the desired package. 

Fixes <http://bugs.gnu.org/22693>.
Suggested by Andy Wingo.

* guix/upstream.scm (update-package-source): Rewrite in terms of 'edit-expression'.
This commit is contained in:
宋文武 2016-04-06 18:32:20 +08:00
parent f7df1e3efb
commit 2b8e9d9ed4
1 changed files with 22 additions and 44 deletions
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66
guix/upstream.scm
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@ -22,8 +22,6 @@
#:use-module (guix utils)
#:use-module ((guix download)
#:select (download-to-store))
#:use-module ((guix build utils)
#:select (substitute))
#:use-module (guix gnupg)
#:use-module (guix packages)
#:use-module (guix ui)
@ -205,52 +203,32 @@ and 'interactive' (default)."
"Modify the source file that defines PACKAGE to refer to VERSION,
whose tarball has SHA256 HASH (a bytevector). Return the new version string
if an update was made, and #f otherwise."
(define (new-line line matches replacement)
;; Iterate over MATCHES and return the modified line based on LINE.
;; Replace each match with REPLACEMENT.
(let loop ((m* matches) ; matches
(o 0) ; offset in L
(r '())) ; result
(match m*
(()
(let ((r (cons (substring line o) r)))
(string-concatenate-reverse r)))
((m . rest)
(loop rest
(match:end m)
(cons* replacement
(substring line o (match:start m))
r))))))
(define (update-source file old-version version
old-hash hash)
;; Update source file FILE, replacing occurrences OLD-VERSION by VERSION
;; and occurrences of OLD-HASH by HASH (base32 representation thereof).
;; TODO: Currently this is a bit of a sledgehammer: if VERSION occurs in
;; different unrelated places, we may modify it more than needed, for
;; instance. We should try to make changes only within the sexp that
;; corresponds to the definition of PACKAGE.
(define (update-expression expr old-version version old-hash hash)
;; Update package expression EXPR, replacing occurrences OLD-VERSION by
;; VERSION and occurrences of OLD-HASH by HASH (base32 representation
;; thereof).
(let ((old-hash (bytevector->nix-base32-string old-hash))
(hash (bytevector->nix-base32-string hash)))
(substitute file
`((,(regexp-quote old-version)
. ,(cut new-line <> <> version))
(,(regexp-quote old-hash)
. ,(cut new-line <> <> hash))))
version))
(string-replace-substring
(string-replace-substring expr old-hash hash)
old-version version)))
(let ((name (package-name package))
(loc (package-field-location package 'version)))
(if loc
(let ((old-version (package-version package))
(old-hash (origin-sha256 (package-source package)))
(file (and=> (location-file loc)
(cut search-path %load-path <>))))
(let ((name (package-name package))
(version-loc (package-field-location package 'version)))
(if version-loc
(let* ((loc (package-location package))
(old-version (package-version package))
(old-hash (origin-sha256 (package-source package)))
(file (and=> (location-file loc)
(cut search-path %load-path <>))))
(if file
(update-source file
old-version version
old-hash hash)
(and (edit-expression
;; Be sure to use absolute filename.
(assq-set! (location->source-properties loc)
'filename file)
(cut update-expression <>
old-version version old-hash hash))
version)
(begin
(warning (_ "~a: could not locate source file")
(location-file loc))