diff options
Diffstat (limited to 'guix/swh.scm')
| -rw-r--r-- | guix/swh.scm | 24 |
1 files changed, 24 insertions, 0 deletions
diff --git a/guix/swh.scm b/guix/swh.scm index 60e97c6d38..be1eb7d151 100644 --- a/guix/swh.scm +++ b/guix/swh.scm @@ -123,6 +123,7 @@ commit-id? swh-download-directory + swh-download-directory-by-nar-hash swh-download)) ;;; Commentary: @@ -805,3 +806,26 @@ wait until it becomes available, which could take several minutes." "SWH: revision ~s originating from ~a could not be found~%" reference url) #f))) + +(define* (swh-download-directory-by-nar-hash hash algorithm output + #:key + (log-port (current-error-port))) + "Download from Software Heritage the directory with the given nar HASH for +ALGORITHM (a symbol such as 'sha256), and unpack it in OUTPUT. Return #t on +success and #f on failure. + +This procedure uses the \"vault\", which contains \"cooked\" directories in +the form of tarballs. If the requested directory is not cooked yet, it will +wait until it becomes available, which could take several minutes." + (match (lookup-directory-by-nar-hash hash algorithm) + (#f + (format log-port + "SWH: directory with nar-~a hash ~a not found~%" + algorithm (bytevector->base16-string hash)) + #f) + (swhid + (format log-port "SWH: found directory with nar-~a hash ~a at '~a'~%" + algorithm (bytevector->base16-string hash) swhid) + (swh-download-archive swhid output + #:archive-type 'flat ;SWHID denotes a directory + #:log-port log-port)))) |