upstream: Pass a package object to updaters.

* guix/upstream.scm (package-update-path): Pass PACKAGE to
'latest-release'.
* guix/gnu-maintenance.scm (latest-release*)
(latest-gnome-release, latest-xorg-release): Adjust accordingly.
* guix/import/cran.scm (latest-cran-release):
(latest-bioconductor-release): Likewise.
* guix/import/elpa.scm (latest-release): Likewise.
* guix/import/gem.scm (latest-release): Likewise.
* guix/import/github.scm (latest-release): Likewise.
* guix/import/hackage.scm (latest-release): Likewise.
* guix/import/pypi.scm (latest-release): Likewise.

8 files changed, 35 insertions, 47 deletions

diff --git a/guix/gnu-maintenance.scm b/guix/gnu-maintenance.scm
index 9d720ca030..f97f2d1692 100644
--- a/guix/gnu-maintenance.scm
+++ b/guix/gnu-maintenance.scm
@@ -33,7 +33,6 @@
   #:use-module (guix records)
   #:use-module (guix upstream)
   #:use-module (guix packages)
-  #:use-module (gnu packages)
   #:export (gnu-package-name
             gnu-package-mundane-name
             gnu-package-copyright-holder
@@ -435,7 +434,7 @@ of EXP otherwise."
   "Like 'latest-release', but ignore FTP errors that might occur when PACKAGE
 is not actually a GNU package, or not hosted on ftp.gnu.org, or not under that
 name (this is the case for \"emacs-auctex\", for instance.)"
-  (false-if-ftp-error (latest-release package)))
+  (false-if-ftp-error (latest-release (package-name package))))
 
 (define %package-name-rx
   ;; Regexp for a package name, e.g., "foo-X.Y".  Since TeXmacs uses
@@ -493,10 +492,10 @@ elpa.gnu.org, and all the GNOME packages."
       (even-minor-version? (or version name))))
 
   (false-if-ftp-error
-   (latest-ftp-release package
+   (latest-ftp-release (package-name package)
                        #:server "ftp.gnome.org"
                        #:directory (string-append "/pub/gnome/sources/"
-                                                  (match package
+                                                  (match (package-name package)
                                                     ("gconf" "GConf")
                                                     (x       x)))
 
@@ -528,10 +527,10 @@ elpa.gnu.org, and all the GNOME packages."
 
 (define (latest-xorg-release package)
   "Return the latest release of PACKAGE, the name of an X.org package."
-  (let ((uri (string->uri (origin-uri (package-source (specification->package package))))))
+  (let ((uri (string->uri (origin-uri (package-source package)))))
     (false-if-ftp-error
      (latest-ftp-release
-      package
+      (package-name package)
       #:server "ftp.freedesktop.org"
       #:directory
       (string-append "/pub/xorg/" (dirname (uri-path uri)))))))
diff --git a/guix/import/cran.scm b/guix/import/cran.scm
index 562917c0a0..69485bc88d 100644
--- a/guix/import/cran.scm
+++ b/guix/import/cran.scm
@@ -1,6 +1,6 @@
 ;;; GNU Guix --- Functional package management for GNU
 ;;; Copyright © 2015 Ricardo Wurmus <rekado@elephly.net>
-;;; Copyright © 2015 Ludovic Courtès <ludo@gnu.org>
+;;; Copyright © 2015, 2016 Ludovic Courtès <ludo@gnu.org>
 ;;;
 ;;; This file is part of GNU Guix.
 ;;;
@@ -32,7 +32,6 @@
   #:use-module ((guix build-system r) #:select (cran-uri bioconductor-uri))
   #:use-module (guix upstream)
   #:use-module (guix packages)
-  #:use-module (gnu packages)
   #:export (cran->guix-package
             bioconductor->guix-package
             %cran-updater
@@ -240,7 +239,7 @@ s-expression corresponding to that package, or #f on failure."
   "Return an <upstream-source> for the latest release of PACKAGE."
 
   (define upstream-name
-    (package->upstream-name (specification->package package)))
+    (package->upstream-name package))
 
   (define meta
     (fetch-description %cran-url upstream-name))
@@ -249,7 +248,7 @@ s-expression corresponding to that package, or #f on failure."
        (let ((version (assoc-ref meta "Version")))
          ;; CRAN does not provide signatures.
          (upstream-source
-          (package package)
+          (package (package-name package))
           (version version)
           (urls (cran-uri upstream-name version))))))
 
@@ -257,7 +256,7 @@ s-expression corresponding to that package, or #f on failure."
   "Return an <upstream-source> for the latest release of PACKAGE."
 
   (define upstream-name
-    (package->upstream-name (specification->package package)))
+    (package->upstream-name package))
 
   (define meta
     (fetch-description %bioconductor-svn-url upstream-name))
@@ -266,7 +265,7 @@ s-expression corresponding to that package, or #f on failure."
        (let ((version (assoc-ref meta "Version")))
          ;; Bioconductor does not provide signatures.
          (upstream-source
-          (package package)
+          (package (package-name package))
           (version version)
           (urls (bioconductor-uri upstream-name version))))))
 
diff --git a/guix/import/elpa.scm b/guix/import/elpa.scm
index 529de4f232..ccc4063a53 100644
--- a/guix/import/elpa.scm
+++ b/guix/import/elpa.scm
@@ -1,6 +1,6 @@
 ;;; GNU Guix --- Functional package management for GNU
 ;;; Copyright © 2015 Federico Beffa <beffa@fbengineering.ch>
-;;; Copyright © 2015 Ludovic Courtès <ludo@gnu.org>
+;;; Copyright © 2015, 2016 Ludovic Courtès <ludo@gnu.org>
 ;;;
 ;;; This file is part of GNU Guix.
 ;;;
@@ -239,13 +239,11 @@ type '<elpa-package>'."
 ;;;
 
 (define (latest-release package)
-  "Return an <upstream-release> for the latest release of PACKAGE.  PACKAGE
-may be a Guix package name such as \"emacs-debbugs\" or an upstream name such
-as \"debbugs\"."
+  "Return an <upstream-release> for the latest release of PACKAGE."
   (define name
-    (if (string-prefix? "emacs-" package)
-        (string-drop package 6)
-        package))
+    (if (string-prefix? "emacs-" (package-name package))
+        (string-drop (package-name package) 6)
+        (package-name package)))
 
   (let* ((repo    'gnu)
          (info    (elpa-package-info name repo))
@@ -256,7 +254,7 @@ as \"debbugs\"."
                     ((_ raw-version reqs synopsis kind . rest)
                      (package-source-url kind name version repo)))))
     (upstream-source
-     (package package)
+     (package (package-name package))
      (version version)
      (urls (list url))
      (signature-urls (list (string-append url ".sig"))))))
diff --git a/guix/import/gem.scm b/guix/import/gem.scm
index b46622f00d..fc06b0d748 100644
--- a/guix/import/gem.scm
+++ b/guix/import/gem.scm
@@ -32,7 +32,6 @@
   #:use-module (guix licenses)
   #:use-module (guix base32)
   #:use-module (guix build-system ruby)
-  #:use-module (gnu packages)
   #:export (gem->guix-package
             %gem-updater))
 
@@ -171,15 +170,14 @@ package on RubyGems."
            ((source-url ...)
             (any rubygems-url? source-url))))))
 
-(define (latest-release guix-package)
-  "Return an <upstream-source> for the latest release of GUIX-PACKAGE."
-  (let* ((gem-name (guix-package->gem-name
-                    (specification->package guix-package)))
+(define (latest-release package)
+  "Return an <upstream-source> for the latest release of PACKAGE."
+  (let* ((gem-name (guix-package->gem-name package))
          (metadata (rubygems-fetch gem-name))
          (version (assoc-ref metadata "version"))
          (url (rubygems-uri gem-name version)))
     (upstream-source
-     (package guix-package)
+     (package (package-name package))
      (version version)
      (urls (list url)))))
 
diff --git a/guix/import/github.scm b/guix/import/github.scm
index c696dcb363..29116d79f0 100644
--- a/guix/import/github.scm
+++ b/guix/import/github.scm
@@ -25,7 +25,6 @@
   #:use-module (guix import utils)
   #:use-module (guix packages)
   #:use-module (guix upstream)
-  #:use-module (gnu packages)
   #:use-module (web uri)
   #:export (%github-updater))
 
@@ -175,15 +174,14 @@ https://github.com/settings/tokens"))
                    (if (eq? (string-ref tag 0) #\v)
                        (substring tag 1) tag)))))))))
 
-(define (latest-release guix-package)
-  "Return an <upstream-source> for the latest release of GUIX-PACKAGE."
-  (let* ((pkg (specification->package guix-package))
-         (source-uri (origin-uri (package-source pkg)))
+(define (latest-release pkg)
+  "Return an <upstream-source> for the latest release of PKG."
+  (let* ((source-uri (origin-uri (package-source pkg)))
          (name (package-name pkg))
          (newest-version (latest-released-version source-uri name)))
     (if newest-version
         (upstream-source
-         (package pkg)
+         (package name)
          (version newest-version)
          (urls (list (updated-github-url pkg newest-version))))
         #f))) ; On GitHub but no proper releases
diff --git a/guix/import/hackage.scm b/guix/import/hackage.scm
index 640ead24f3..f07f453e11 100644
--- a/guix/import/hackage.scm
+++ b/guix/import/hackage.scm
@@ -23,7 +23,6 @@
   #:use-module (srfi srfi-26)
   #:use-module (srfi srfi-11)
   #:use-module (srfi srfi-1)
-  #:use-module (gnu packages)
   #:use-module ((guix download) #:select (download-to-store url-fetch))
   #:use-module ((guix utils) #:select (package-name->name+version
                                        canonical-newline-port))
@@ -269,10 +268,9 @@ respectively."
            ((source-url ...)
             (any haskell-url? source-url))))))
 
-(define (latest-release guix-package)
-  "Return an <upstream-source> for the latest release of GUIX-PACKAGE."
-  (let* ((hackage-name (guix-package->hackage-name
-                        (specification->package guix-package)))
+(define (latest-release package)
+  "Return an <upstream-source> for the latest release of PACKAGE."
+  (let* ((hackage-name (guix-package->hackage-name package))
          (cabal-meta (hackage-fetch hackage-name)))
     (match cabal-meta
       (#f
@@ -283,7 +281,7 @@ respectively."
       ((_ *** ("version" (version)))
        (let ((url (hackage-source-url hackage-name version)))
          (upstream-source
-          (package guix-package)
+          (package (package-name package))
           (version version)
           (urls (list url))))))))
 
diff --git a/guix/import/pypi.scm b/guix/import/pypi.scm
index 8ae4948147..de30f4bea6 100644
--- a/guix/import/pypi.scm
+++ b/guix/import/pypi.scm
@@ -40,7 +40,6 @@
   #:use-module (guix upstream)
   #:use-module (guix licenses)
   #:use-module (guix build-system python)
-  #:use-module (gnu packages)
   #:use-module (gnu packages python)
   #:export (pypi->guix-package
             %pypi-updater))
@@ -248,16 +247,15 @@ VERSION, SOURCE-URL, HOME-PAGE, SYNOPSIS, DESCRIPTION, and LICENSE."
            ((source-url ...)
             (any pypi-url? source-url))))))
 
-(define (latest-release guix-package)
-  "Return an <upstream-source> for the latest release of GUIX-PACKAGE."
+(define (latest-release package)
+  "Return an <upstream-source> for the latest release of PACKAGE."
   (guard (c ((missing-source-error? c) #f))
-    (let* ((pypi-name (guix-package->pypi-name
-                       (specification->package guix-package)))
+    (let* ((pypi-name (guix-package->pypi-name package))
            (metadata (pypi-fetch pypi-name))
            (version (assoc-ref* metadata "info" "version"))
            (url (assoc-ref (latest-source-release metadata) "url")))
       (upstream-source
-       (package guix-package)
+       (package (package-name package))
        (version version)
        (urls (list url))))))
 
diff --git a/guix/upstream.scm b/guix/upstream.scm
index 02c50c06c8..167c9ff89a 100644
--- a/guix/upstream.scm
+++ b/guix/upstream.scm
@@ -128,11 +128,11 @@ them matches."
        updaters))
 
 (define (package-update-path package updaters)
-  "Return an upstream source to update PACKAGE to, or #f if no update is
-needed or known."
+  "Return an upstream source to update PACKAGE, a <package> object, or #f if
+no update is needed or known."
   (match (lookup-updater package updaters)
     ((? procedure? latest-release)
-     (match (latest-release (package-name package))
+     (match (latest-release package)
        ((and source ($ <upstream-source> name version))
         (and (version>? version (package-version package))
              source))