diff options
Diffstat (limited to 'gnu/packages.scm')
| -rw-r--r-- | gnu/packages.scm | 31 |
1 files changed, 15 insertions, 16 deletions
diff --git a/gnu/packages.scm b/gnu/packages.scm index ec2473422f..0aa289d56c 100644 --- a/gnu/packages.scm +++ b/gnu/packages.scm @@ -235,28 +235,27 @@ decreasing version order." matching))))) (define find-newest-available-packages - (memoize - (lambda () - "Return a vhash keyed by package names, and with + (mlambda () + "Return a vhash keyed by package names, and with associated values of the form (newest-version newest-package ...) where the preferred package is listed first." - ;; FIXME: Currently, the preferred package is whichever one - ;; was found last by 'fold-packages'. Find a better solution. - (fold-packages (lambda (p r) - (let ((name (package-name p)) - (version (package-version p))) - (match (vhash-assoc name r) - ((_ newest-so-far . pkgs) - (case (version-compare version newest-so-far) - ((>) (vhash-cons name `(,version ,p) r)) - ((=) (vhash-cons name `(,version ,p ,@pkgs) r)) - ((<) r))) - (#f (vhash-cons name `(,version ,p) r))))) - vlist-null)))) + ;; FIXME: Currently, the preferred package is whichever one + ;; was found last by 'fold-packages'. Find a better solution. + (fold-packages (lambda (p r) + (let ((name (package-name p)) + (version (package-version p))) + (match (vhash-assoc name r) + ((_ newest-so-far . pkgs) + (case (version-compare version newest-so-far) + ((>) (vhash-cons name `(,version ,p) r)) + ((=) (vhash-cons name `(,version ,p ,@pkgs) r)) + ((<) r))) + (#f (vhash-cons name `(,version ,p) r))))) + vlist-null))) (define (find-best-packages-by-name name version) "If version is #f, return the list of packages named NAME with the highest |