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authorLudovic Courtès <ludo@gnu.org>2020-01-23 22:35:43 +0100
committerLudovic Courtès <ludo@gnu.org>2020-01-23 23:34:10 +0100
commit370891d5655a92eda596df5a03abed53511df386 (patch)
tree88185674974487b8beb1751d9e02d68259a56c3a /guix/derivations.scm
parent4d52e0f66791250deae4890ac12a4789b1290a88 (diff)
derivations: Inline 'find' in 'coalesce-duplicate-inputs'.
Previously the first argument to 'find' would show up high in profiles of 'package-derivation'. This speeds things up a big, especially on Guile 3. * guix/derivations.scm (coalesce-duplicate-inputs)[find]: New procedure.
Diffstat (limited to 'guix/derivations.scm')
-rw-r--r--guix/derivations.scm9
1 files changed, 8 insertions, 1 deletions
diff --git a/guix/derivations.scm b/guix/derivations.scm
index 480a65c78b..f6d6f7db25 100644
--- a/guix/derivations.scm
+++ b/guix/derivations.scm
@@ -1,5 +1,5 @@
;;; GNU Guix --- Functional package management for GNU
-;;; Copyright © 2012, 2013, 2014, 2015, 2016, 2017, 2018, 2019 Ludovic Courtès <ludo@gnu.org>
+;;; Copyright © 2012, 2013, 2014, 2015, 2016, 2017, 2018, 2019, 2020 Ludovic Courtès <ludo@gnu.org>
;;; Copyright © 2016, 2017 Mathieu Lirzin <mthl@gnu.org>
;;;
;;; This file is part of GNU Guix.
@@ -240,6 +240,13 @@ the store."
"Return a list of inputs, such that when INPUTS contains the same DRV twice,
they are coalesced, with their sub-derivations merged. This is needed because
Nix itself keeps only one of them."
+ (define (find pred lst) ;inlinable copy of 'find'
+ (let loop ((lst lst))
+ (match lst
+ (() #f)
+ ((head . tail)
+ (if (pred head) head (loop tail))))))
+
(fold (lambda (input result)
(match input
(($ <derivation-input> (= derivation-file-name path) sub-drvs)