(address . guix-patches@gnu.org)(name . Nicolas Graves)(address . ngraves@ngraves.fr)
20241029135354.17423-1-ngraves@ngraves.fr
* gnu/import/hackage.scm
(hackage-fetch-and-hash, hackage-fetch): Support name and version
argument.
(import-release): New variable, formerly known as latest-release.
Support updating to a specific version.
---
guix/import/hackage.scm | 27 ++++++++++++---------------
1 file changed, 12 insertions(+), 15 deletions(-)
Toggle diff (75 lines)
diff --git a/guix/import/hackage.scm b/guix/import/hackage.scm
index 79a51d3300..e3ed98c089 100644
--- a/guix/import/hackage.scm
+++ b/guix/import/hackage.scm
@@ -9,6 +9,7 @@
;;; Copyright © 2019 Simon Tournier <zimon.toutoune@gmail.com>
;;; Copyright © 2022 Hartmut Goebel <h.goebel@crazy-compilers.com>
;;; Copyright © 2023-2024 Ludovic Courtès <ludo@gnu.org>
+;;; Copyright © 2024 Nicolas Graves <ngraves@ngraves.fr>
;;;
;;; This file is part of GNU Guix.
;;;
@@ -136,7 +137,7 @@ (define (read-cabal-and-hash port)
(values (read-cabal (canonical-newline-port port))
(bytevector->nix-base32-string (get-hash)))))
-(define (hackage-fetch-and-hash name-version)
+(define (hackage-fetch-and-hash name version)
"Fetch the latest Cabal revision for the package NAME-VERSION, and return
two values: the parsed Cabal file and its hash in nix-base32 format. If the
version part is omitted from the package name, then fetch the latest
@@ -144,18 +145,19 @@ (define (hackage-fetch-and-hash name-version)
(guard (c ((and (http-get-error? c)
(= 404 (http-get-error-code c)))
(values #f #f))) ;"expected" if package is unknown
- (let* ((name version (package-name->name+version name-version))
- (url (hackage-cabal-url name version))
- (port _ (http-fetch url))
- (cabal hash (read-cabal-and-hash port)))
+ (let* ((name new-version (package-name->name+version name))
+ (version (or version new-version))
+ (url (hackage-cabal-url name version))
+ (port _ (http-fetch url))
+ (cabal hash (read-cabal-and-hash port)))
(close-port port)
(values cabal hash))))
-(define (hackage-fetch name-version)
+(define (hackage-fetch name version)
"Return the Cabal file for the package NAME-VERSION, or #f on failure. If
the version part is omitted from the package name, then return the latest
version."
- (let ((cabal hash (hackage-fetch-and-hash name-version)))
+ (let ((cabal hash (hackage-fetch-and-hash name version)))
cabal))
(define string->license
@@ -377,15 +379,10 @@ (define hackage-package?
(let ((hackage-rx (make-regexp "(https?://hackage.haskell.org|mirror://hackage/)")))
(url-predicate (cut regexp-exec hackage-rx <>))))
-(define* (latest-release package #:key (version #f))
+(define* (import-release package #:key (version #f))
"Return an <upstream-source> for the latest release of PACKAGE."
- (when version
- (raise
- (formatted-message
- (G_ "~a updater doesn't support updating to a specific version, sorry.")
- "hackage")))
(let* ((hackage-name (package-upstream-name* package))
- (cabal-meta (hackage-fetch hackage-name)))
+ (cabal-meta (hackage-fetch hackage-name version)))
(match cabal-meta
(#f
(format (current-error-port)
@@ -407,6 +404,6 @@ (define %hackage-updater
(name 'hackage)
(description "Updater for Hackage packages")
(pred hackage-package?)
- (import latest-release)))
+ (import import-release)))
;;; cabal.scm ends here
--
2.46.0