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| author | Ludovic Courtès <ludo@gnu.org> | 2019-01-11 15:19:41 +0100 |
|---|---|---|
| committer | Ludovic Courtès <ludo@gnu.org> | 2019-01-15 20:24:09 +0100 |
| commit | e2a903c807ccacec5925f197ce26f626060e1953 (patch) | |
| tree | 78d384d70076f20cef6e27e1e6f7288a4912c941 /gnu | |
| parent | 465a0d65ae371cd6ae85a5f4f356c8989a863e9f (diff) | |
| download | guix-e2a903c807ccacec5925f197ce26f626060e1953.tar guix-e2a903c807ccacec5925f197ce26f626060e1953.tar.gz | |
packages: Remove 'find-newest-available-packages'.
Since commit 9ffc1c00e55eb7931846dbb3fafcf54716fff57c,
'find-newest-available-packages' and 'find-packages-by-name' were both
building a vhash mapping package names to packages. This factorizes
this bit, also reducing I/O, CPU, and memory usage.
* gnu/packages.scm (find-best-packages-by-name): Remove.
(find-best-packages-by-name): Use 'find-packages-by-name' instead of
'find-newest-available-packages'.
Diffstat (limited to 'gnu')
| -rw-r--r-- | gnu/packages.scm | 38 |
1 files changed, 10 insertions, 28 deletions
diff --git a/gnu/packages.scm b/gnu/packages.scm index 532297239d..4a85cf4b87 100644 --- a/gnu/packages.scm +++ b/gnu/packages.scm @@ -1,5 +1,5 @@ ;;; GNU Guix --- Functional package management for GNU -;;; Copyright © 2012, 2013, 2014, 2015, 2016, 2017, 2018 Ludovic Courtès <ludo@gnu.org> +;;; Copyright © 2012, 2013, 2014, 2015, 2016, 2017, 2018, 2019 Ludovic Courtès <ludo@gnu.org> ;;; Copyright © 2013 Mark H Weaver <mhw@netris.org> ;;; Copyright © 2014 Eric Bavier <bavier@member.fsf.org> ;;; Copyright © 2016, 2017 Alex Kost <alezost@gmail.com> @@ -53,7 +53,6 @@ find-packages-by-name find-best-packages-by-name - find-newest-available-packages specification->package specification->package+output @@ -203,38 +202,21 @@ decreasing version order." matching) matching))))) -(define find-newest-available-packages - (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))) - (define (find-best-packages-by-name name version) "If version is #f, return the list of packages named NAME with the highest version numbers; otherwise, return the list of packages named NAME and at VERSION." (if version (find-packages-by-name name version) - (match (vhash-assoc name (find-newest-available-packages)) - ((_ version pkgs ...) pkgs) - (#f '())))) + (match (find-packages-by-name name) + (() + '()) + ((matches ...) + ;; Return the subset of MATCHES with the higher version number. + (let ((highest (package-version (first matches)))) + (take-while (lambda (p) + (string=? (package-version p) highest)) + matches)))))) (define %sigint-prompt |