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| author | Ludovic Courtès <ludo@gnu.org> | 2019-01-25 10:05:31 +0100 |
|---|---|---|
| committer | Ludovic Courtès <ludo@gnu.org> | 2019-01-25 14:06:37 +0100 |
| commit | 3e223a22a70138b8c57e742ad8ec737131249820 (patch) | |
| tree | 63c1ec9cf5e89a487b473b5cb578039d580f9917 /guix/packages.scm | |
| parent | c6e33df90f2c10046bee1f0bb2e4eb7dc1688d20 (diff) | |
packages: Add 'package-closure'.
* guix/packages.scm (package-closure): New procedure.
* tests/packages.scm ("package-closure"): New test.
Diffstat (limited to 'guix/packages.scm')
| -rw-r--r-- | guix/packages.scm | 25 |
1 files changed, 24 insertions, 1 deletions
diff --git a/guix/packages.scm b/guix/packages.scm index e4c2ac3be5..f191327718 100644 --- a/guix/packages.scm +++ b/guix/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 © 2014, 2015, 2017, 2018 Mark H Weaver <mhw@netris.org> ;;; Copyright © 2015 Eric Bavier <bavier@member.fsf.org> ;;; Copyright © 2016 Alex Kost <alezost@gmail.com> @@ -133,6 +133,7 @@ bag-transitive-host-inputs bag-transitive-build-inputs bag-transitive-target-inputs + package-closure default-guile default-guile-derivation @@ -798,6 +799,28 @@ dependencies are known to build on SYSTEM." "Return the \"target inputs\" of BAG, recursively." (transitive-inputs (bag-target-inputs bag))) +(define* (package-closure packages #:key (system (%current-system))) + "Return the closure of PACKAGES on SYSTEM--i.e., PACKAGES and the list of +packages they depend on, recursively." + (let loop ((packages packages) + (visited vlist-null) + (closure (list->setq packages))) + (match packages + (() + (set->list closure)) + ((package . rest) + (if (vhash-assq package visited) + (loop rest visited closure) + (let* ((bag (package->bag package system)) + (dependencies (filter-map (match-lambda + ((label (? package? package) . _) + package) + (_ #f)) + (bag-direct-inputs bag)))) + (loop (append dependencies rest) + (vhash-consq package #t visited) + (fold set-insert closure dependencies)))))))) + (define* (package-mapping proc #:optional (cut? (const #f))) "Return a procedure that, given a package, applies PROC to all the packages depended on and returns the resulting package. The procedure stops recursion |