diff options
Diffstat (limited to 'guix/build/download.scm')
| -rw-r--r-- | guix/build/download.scm | 50 |
1 files changed, 39 insertions, 11 deletions
diff --git a/guix/build/download.scm b/guix/build/download.scm index db0a39084b..74b7486b7b 100644 --- a/guix/build/download.scm +++ b/guix/build/download.scm @@ -1,5 +1,5 @@ ;;; GNU Guix --- Functional package management for GNU -;;; Copyright © 2012-2022 Ludovic Courtès <[email protected]> +;;; Copyright © 2012-2022, 2024 Ludovic Courtès <[email protected]> ;;; Copyright © 2015 Mark H Weaver <[email protected]> ;;; Copyright © 2017 Tobias Geerinckx-Rice <[email protected]> ;;; Copyright © 2021 Timothy Sample <[email protected]> @@ -40,7 +40,10 @@ #:autoload (guix swh) (swh-download-directory %verify-swh-certificate?) #:use-module (ice-9 match) #:use-module (ice-9 format) - #:export (open-socket-for-uri + #:export (%download-methods + download-method-enabled? + + open-socket-for-uri open-connection-for-uri http-fetch %x509-certificate-directory @@ -622,6 +625,20 @@ true, verify HTTPS certificates; otherwise simply ignore them." (lambda (key . args) (print-exception (current-error-port) #f key args)))) +(define %download-methods + ;; Either #f (the default) or a list of symbols denoting the sequence of + ;; download methods to be used--e.g., '(swh nar upstream). + (make-parameter + (and=> (getenv "GUIX_DOWNLOAD_METHODS") + (lambda (str) + (map string->symbol (string-tokenize str)))))) + +(define (download-method-enabled? method) + "Return true if METHOD (a symbol such as 'swh) is enabled as part of the +download fallback sequence." + (or (not (%download-methods)) + (memq method (%download-methods)))) + (define (uri-vicinity dir file) "Concatenate DIR, slash, and FILE, keeping only one slash in between. This is required by some HTTP servers." @@ -788,18 +805,28 @@ otherwise simply ignore them." hashes))) disarchive-mirrors)) + (define initial-uris + (append (if (download-method-enabled? 'upstream) + uri + '()) + (if (download-method-enabled? 'content-addressed-mirrors) + content-addressed-uris + '()) + (if (download-method-enabled? 'internet-archive) + (match uri + ((first . _) + (or (and=> (internet-archive-uri first) list) + '())) + (() '())) + '()))) + ;; Make this unbuffered so 'progress-report/file' works as expected. 'line ;; means '\n', not '\r', so it's not appropriate here. (setvbuf (current-output-port) 'none) (setvbuf (current-error-port) 'line) - (let try ((uri (append uri content-addressed-uris - (match uri - ((first . _) - (or (and=> (internet-archive-uri first) list) - '())) - (() '()))))) + (let try ((uri initial-uris)) (match uri ((uri tail ...) (or (fetch uri file) @@ -807,9 +834,10 @@ otherwise simply ignore them." (() ;; If we are looking for a software archive, one last thing we ;; can try is to use Disarchive to assemble it. - (or (disarchive-fetch/any disarchive-uris file - #:verify-certificate? verify-certificate? - #:timeout timeout) + (or (and (download-method-enabled? 'disarchive) + (disarchive-fetch/any disarchive-uris file + #:verify-certificate? verify-certificate? + #:timeout timeout)) (begin (format (current-error-port) "failed to download ~s from ~s~%" file url) |