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| author | Ludovic Courtès <ludo@gnu.org> | 2020-01-23 22:35:43 +0100 |
|---|---|---|
| committer | Ludovic Courtès <ludo@gnu.org> | 2020-01-23 23:34:10 +0100 |
| commit | 370891d5655a92eda596df5a03abed53511df386 (patch) | |
| tree | 88185674974487b8beb1751d9e02d68259a56c3a | |
| parent | 4d52e0f66791250deae4890ac12a4789b1290a88 (diff) | |
| download | guix-370891d5655a92eda596df5a03abed53511df386.tar.gz | |
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.
| -rw-r--r-- | guix/derivations.scm | 9 |
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) |