189 lines
7.5 KiB
Scheme
189 lines
7.5 KiB
Scheme
;;; GNU Guix --- Functional package management for GNU
|
|
;;; Copyright © 2014, 2015, 2016, 2017, 2019 Ludovic Courtès <ludo@gnu.org>
|
|
;;; Copyright © 2016 Ricardo Wurmus <rekado@elephly.net>
|
|
;;; Copyright © 2021 Xinglu Chen <public@yoctocell.xyz>
|
|
;;;
|
|
;;; This file is part of GNU Guix.
|
|
;;;
|
|
;;; GNU Guix is free software; you can redistribute it and/or modify it
|
|
;;; under the terms of the GNU General Public License as published by
|
|
;;; the Free Software Foundation; either version 3 of the License, or (at
|
|
;;; your option) any later version.
|
|
;;;
|
|
;;; GNU Guix is distributed in the hope that it will be useful, but
|
|
;;; WITHOUT ANY WARRANTY; without even the implied warranty of
|
|
;;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
|
|
;;; GNU General Public License for more details.
|
|
;;;
|
|
;;; You should have received a copy of the GNU General Public License
|
|
;;; along with GNU Guix. If not, see <http://www.gnu.org/licenses/>.
|
|
|
|
(define-module (guix hg-download)
|
|
#:use-module (guix gexp)
|
|
#:use-module (guix store)
|
|
#:use-module (guix monads)
|
|
#:use-module (guix records)
|
|
#:use-module (guix modules)
|
|
#:use-module (guix packages)
|
|
#:autoload (guix build-system gnu) (standard-packages)
|
|
#:use-module (srfi srfi-34)
|
|
#:use-module (srfi srfi-35)
|
|
#:use-module (ice-9 match)
|
|
#:use-module (ice-9 popen)
|
|
#:use-module (ice-9 rdelim)
|
|
#:export (hg-reference
|
|
hg-reference?
|
|
hg-reference-url
|
|
hg-reference-changeset
|
|
hg-predicate
|
|
hg-fetch
|
|
hg-version
|
|
hg-file-name))
|
|
|
|
;;; Commentary:
|
|
;;;
|
|
;;; An <origin> method that fetches a specific changeset from a Mercurial
|
|
;;; repository. The repository URL and changeset ID are specified with a
|
|
;;; <hg-reference> object.
|
|
;;;
|
|
;;; Code:
|
|
|
|
(define-record-type* <hg-reference>
|
|
hg-reference make-hg-reference
|
|
hg-reference?
|
|
(url hg-reference-url)
|
|
(changeset hg-reference-changeset))
|
|
|
|
(define (hg-package)
|
|
"Return the default Mercurial package."
|
|
(let ((distro (resolve-interface '(gnu packages version-control))))
|
|
(module-ref distro 'mercurial)))
|
|
|
|
(define* (hg-fetch ref hash-algo hash
|
|
#:optional name
|
|
#:key (system (%current-system)) (guile (default-guile))
|
|
(hg (hg-package)))
|
|
"Return a fixed-output derivation that fetches REF, a <hg-reference>
|
|
object. The output is expected to have recursive hash HASH of type
|
|
HASH-ALGO (a symbol). Use NAME as the file name, or a generic name if #f."
|
|
(define inputs
|
|
;; The 'swh-download' procedure requires tar and gzip.
|
|
`(("gzip" ,(module-ref (resolve-interface '(gnu packages compression))
|
|
'gzip))
|
|
("tar" ,(module-ref (resolve-interface '(gnu packages base))
|
|
'tar))))
|
|
|
|
(define guile-zlib
|
|
(module-ref (resolve-interface '(gnu packages guile)) 'guile-zlib))
|
|
|
|
(define guile-json
|
|
(module-ref (resolve-interface '(gnu packages guile)) 'guile-json-4))
|
|
|
|
(define gnutls
|
|
(module-ref (resolve-interface '(gnu packages tls)) 'gnutls))
|
|
|
|
(define modules
|
|
(delete '(guix config)
|
|
(source-module-closure '((guix build hg)
|
|
(guix build download-nar)
|
|
(guix swh)))))
|
|
|
|
(define build
|
|
(with-imported-modules modules
|
|
(with-extensions (list guile-json gnutls ;for (guix swh)
|
|
guile-zlib)
|
|
#~(begin
|
|
(use-modules (guix build hg)
|
|
(guix build utils) ;for `set-path-environment-variable'
|
|
(guix build download-nar)
|
|
(guix swh)
|
|
(ice-9 match))
|
|
|
|
(set-path-environment-variable "PATH" '("bin")
|
|
(match '#+inputs
|
|
(((names dirs outputs ...) ...)
|
|
dirs)))
|
|
|
|
(setvbuf (current-output-port) 'line)
|
|
(setvbuf (current-error-port) 'line)
|
|
|
|
(or (hg-fetch '#$(hg-reference-url ref)
|
|
'#$(hg-reference-changeset ref)
|
|
#$output
|
|
#:hg-command (string-append #+hg "/bin/hg"))
|
|
(download-nar #$output)
|
|
;; As a last resort, attempt to download from Software Heritage.
|
|
;; Disable X.509 certificate verification to avoid depending
|
|
;; on nss-certs--we're authenticating the checkout anyway.
|
|
(parameterize ((%verify-swh-certificate? #f))
|
|
(format (current-error-port)
|
|
"Trying to download from Software Heritage...~%")
|
|
(swh-download #$(hg-reference-url ref)
|
|
#$(hg-reference-changeset ref)
|
|
#$output)))))))
|
|
|
|
(mlet %store-monad ((guile (package->derivation guile system)))
|
|
(gexp->derivation (or name "hg-checkout") build
|
|
#:leaked-env-vars '("http_proxy" "https_proxy"
|
|
"LC_ALL" "LC_MESSAGES" "LANG"
|
|
"COLUMNS")
|
|
#:system system
|
|
#:local-build? #t ;don't offload repo cloning
|
|
#:hash-algo hash-algo
|
|
#:hash hash
|
|
#:recursive? #t
|
|
#:guile-for-build guile)))
|
|
|
|
(define (hg-version version revision changeset)
|
|
"Return the version string for packages using hg-download."
|
|
;; hg-version is almost exclusively executed while modules are being loaded.
|
|
;; This makes any errors hide their backtrace. Avoid the mysterious error
|
|
;; "Value out of range 0 to N: 7" when the commit ID is too short, which
|
|
;; can happen, for example, when the user swapped the revision and commit
|
|
;; arguments by mistake.
|
|
(when (< (string-length changeset) 7)
|
|
(raise
|
|
(condition
|
|
(&message (message "hg-version: changeset ID unexpectedly short")))))
|
|
(string-append version "-" revision "." (string-take changeset 7)))
|
|
|
|
(define (hg-file-name name version)
|
|
"Return the file-name for packages using hg-download."
|
|
(string-append name "-" version "-checkout"))
|
|
|
|
(define (hg-file-list directory)
|
|
"Evaluates to a list of files contained in the repository at path
|
|
@var{directory}"
|
|
(let* ((port (open-input-pipe (format #f "hg files --repository ~s" directory)))
|
|
(files (let loop ((files '()))
|
|
(let ((line (read-line port)))
|
|
(cond
|
|
((eof-object? line) files)
|
|
(else
|
|
(loop (cons line files))))))))
|
|
(close-pipe port)
|
|
(map canonicalize-path files)))
|
|
|
|
(define (should-select? path-list candidate)
|
|
"Returns #t in case that @var{candidate} is a file that is part of the given
|
|
@var{path-list}."
|
|
(let ((canon-candidate (canonicalize-path candidate)))
|
|
(let loop ((xs path-list))
|
|
(cond
|
|
((null? xs)
|
|
;; Directories are not part of `hg files', but `local-file' will not
|
|
;; recurse if we don't return #t for directories.
|
|
(equal? (array-ref (lstat candidate) 13) 'directory))
|
|
((string-contains candidate (car xs)) #t)
|
|
(else (loop (cdr xs)))))))
|
|
|
|
(define (hg-predicate directory)
|
|
"This procedure evaluates to a predicate that reports back whether a given
|
|
@var{file} - @var{stat} combination is part of the files tracked by
|
|
Mercurial."
|
|
(let ((files (hg-file-list directory)))
|
|
(lambda (file stat)
|
|
(should-select? files file))))
|
|
|
|
;;; hg-download.scm ends here
|