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-rw-r--r--guix/import/utils.scm26
1 files changed, 14 insertions, 12 deletions
diff --git a/guix/import/utils.scm b/guix/import/utils.scm
index d1b8076ddd..a180742ca3 100644
--- a/guix/import/utils.scm
+++ b/guix/import/utils.scm
@@ -8,6 +8,7 @@
;;; Copyright © 2020 Helio Machado <0x2b3bfa0+guix@googlemail.com>
;;; Copyright © 2020 Martin Becze <mjbecze@riseup.net>
;;; Copyright © 2021 Maxim Cournoyer <maxim.cournoyer@gmail.com>
+;;; Copyright © 2021 Sarah Morgensen <iskarian@mgsn.dev>
;;;
;;; This file is part of GNU Guix.
;;;
@@ -489,15 +490,16 @@ to obtain the Guix package name corresponding to the upstream name."
(name (list name #f))) dependencies)))
(make-node name version package normalized-deps)))
- (map node-package
- (topological-sort (list (lookup-node package-name version))
- (lambda (node)
- (map (lambda (name-version)
- (apply lookup-node name-version))
- (remove (lambda (name-version)
- (apply exists? name-version))
- (node-dependencies node))))
- (lambda (node)
- (string-append
- (node-name node)
- (or (node-version node) ""))))))
+ (filter-map
+ node-package
+ (topological-sort (list (lookup-node package-name version))
+ (lambda (node)
+ (map (lambda (name-version)
+ (apply lookup-node name-version))
+ (remove (lambda (name-version)
+ (apply exists? name-version))
+ (node-dependencies node))))
+ (lambda (node)
+ (string-append
+ (node-name node)
+ (or (node-version node) ""))))))