diff options
Diffstat (limited to 'guix/build/utils.scm')
| -rw-r--r-- | guix/build/utils.scm | 21 |
1 files changed, 20 insertions, 1 deletions
diff --git a/guix/build/utils.scm b/guix/build/utils.scm index c6731b37ae..2636da392f 100644 --- a/guix/build/utils.scm +++ b/guix/build/utils.scm @@ -1,5 +1,5 @@ ;;; GNU Guix --- Functional package management for GNU -;;; Copyright © 2012, 2013, 2014, 2015, 2016, 2017, 2018, 2019, 2020 Ludovic Courtès <ludo@gnu.org> +;;; Copyright © 2012, 2013, 2014, 2015, 2016, 2017, 2018, 2019, 2020, 2021 Ludovic Courtès <ludo@gnu.org> ;;; Copyright © 2013 Andreas Enge <andreas@enge.fr> ;;; Copyright © 2013 Nikita Karetnikov <nikita@karetnikov.org> ;;; Copyright © 2015, 2018, 2021 Mark H Weaver <mhw@netris.org> @@ -80,6 +80,10 @@ search-path-as-string->list list->search-path-as-string which + search-input-file + search-error? + search-error-path + search-error-file every* alist-cons-before @@ -614,6 +618,21 @@ PROGRAM could not be found." (search-path (search-path-as-string->list (getenv "PATH")) program)) +(define-condition-type &search-error &error + search-error? + (path search-error-path) + (file search-error-file)) + +(define (search-input-file inputs file) + "Find a file named FILE among the INPUTS and return its absolute file name. + +FILE must be a string like \"bin/sh\". If FILE is not found, an exception is +raised." + (match inputs + (((_ . directories) ...) + (or (search-path directories file) + (raise (condition (&search-error (path directories) (file file)))))))) + ;;; ;;; Phases. |