323 lines
14 KiB
Scheme
323 lines
14 KiB
Scheme
;;; GNU Guix --- Functional package management for GNU
|
||
;;; Copyright © 2014-2021, 2023 Ludovic Courtès <ludo@gnu.org>
|
||
;;; Copyright © 2017 Mathieu Lirzin <mthl@gnu.org>
|
||
;;; Copyright © 2017 Christopher Baines <mail@cbaines.net>
|
||
;;; Copyright © 2020 Jakub Kądziołka <kuba@kadziolka.net>
|
||
;;; Copyright © 2023 Simon Tournier <zimon.toutoune@gmail.com>
|
||
;;;
|
||
;;; 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 git-download)
|
||
#:use-module (guix gexp)
|
||
#:use-module (guix store)
|
||
#:use-module (guix monads)
|
||
#:use-module (guix records)
|
||
#:use-module (guix packages)
|
||
#:use-module (guix modules)
|
||
#:autoload (guix build-system gnu) (standard-packages)
|
||
#:autoload (git bindings) (libgit2-init!)
|
||
#:autoload (git repository) (repository-open
|
||
repository-close!
|
||
repository-discover
|
||
repository-head
|
||
repository-working-directory)
|
||
#:autoload (git submodule) (repository-submodules
|
||
submodule-lookup
|
||
submodule-path)
|
||
#:autoload (git commit) (commit-lookup commit-tree)
|
||
#:autoload (git reference) (reference-target)
|
||
#:autoload (git tree) (tree-list)
|
||
#:use-module (ice-9 match)
|
||
#:use-module (ice-9 vlist)
|
||
#:use-module (srfi srfi-1)
|
||
#:use-module (srfi srfi-34)
|
||
#:use-module (srfi srfi-35)
|
||
#:export (git-reference
|
||
git-reference?
|
||
git-reference-url
|
||
git-reference-commit
|
||
git-reference-recursive?
|
||
|
||
git-fetch
|
||
git-version
|
||
git-file-name
|
||
git-predicate))
|
||
|
||
;;; Commentary:
|
||
;;;
|
||
;;; An <origin> method that fetches a specific commit from a Git repository.
|
||
;;; The repository URL and commit hash are specified with a <git-reference>
|
||
;;; object.
|
||
;;;
|
||
;;; Code:
|
||
|
||
(define-record-type* <git-reference>
|
||
git-reference make-git-reference
|
||
git-reference?
|
||
(url git-reference-url)
|
||
(commit git-reference-commit)
|
||
(recursive? git-reference-recursive? ; whether to recurse into sub-modules
|
||
(default #f)))
|
||
|
||
(define (git-package)
|
||
"Return the default Git package."
|
||
(let ((distro (resolve-interface '(gnu packages version-control))))
|
||
(module-ref distro 'git-minimal)))
|
||
|
||
(define* (git-fetch ref hash-algo hash
|
||
#:optional name
|
||
#:key (system (%current-system)) (guile (default-guile))
|
||
(git (git-package)))
|
||
"Return a fixed-output derivation that fetches REF, a <git-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
|
||
`(("git" ,git)
|
||
|
||
;; When doing 'git clone --recursive', we need sed, grep, etc. to be
|
||
;; available so that 'git submodule' works.
|
||
,@(if (git-reference-recursive? ref)
|
||
(standard-packages)
|
||
|
||
;; 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-json
|
||
(module-ref (resolve-interface '(gnu packages guile)) 'guile-json-4))
|
||
|
||
(define guile-lzlib
|
||
(module-ref (resolve-interface '(gnu packages guile)) 'guile-lzlib))
|
||
|
||
(define gnutls
|
||
(module-ref (resolve-interface '(gnu packages tls)) 'guile-gnutls))
|
||
|
||
(define glibc-locales
|
||
;; Note: pick the '-final' variant to avoid circular dependency on
|
||
;; i586-gnu, where 'glibc-utf8-locales' indirectly depends on Git.
|
||
(module-ref (resolve-interface '(gnu packages commencement))
|
||
'glibc-utf8-locales-final))
|
||
|
||
(define modules
|
||
(delete '(guix config)
|
||
(source-module-closure '((guix build git)
|
||
(guix build utils)
|
||
(guix build download-nar)
|
||
(guix swh)))))
|
||
|
||
(define build
|
||
(with-imported-modules modules
|
||
(with-extensions (list guile-json gnutls ;for (guix swh)
|
||
guile-lzlib)
|
||
#~(begin
|
||
(use-modules (guix build git)
|
||
(guix build utils)
|
||
(guix build download-nar)
|
||
(guix swh)
|
||
(ice-9 match))
|
||
|
||
(define recursive?
|
||
(call-with-input-string (getenv "git recursive?") read))
|
||
|
||
;; Let Guile interpret file names as UTF-8, otherwise
|
||
;; 'delete-file-recursively' might fail to delete all of
|
||
;; '.git'--see <https://issues.guix.gnu.org/54893>.
|
||
(setenv "GUIX_LOCPATH"
|
||
#+(file-append glibc-locales "/lib/locale"))
|
||
(setlocale LC_ALL "en_US.utf8")
|
||
|
||
;; The 'git submodule' commands expects Coreutils, sed,
|
||
;; grep, etc. to be in $PATH.
|
||
(set-path-environment-variable "PATH" '("bin")
|
||
(match '#+inputs
|
||
(((names dirs outputs ...) ...)
|
||
dirs)))
|
||
|
||
(setvbuf (current-output-port) 'line)
|
||
(setvbuf (current-error-port) 'line)
|
||
|
||
(or (git-fetch (getenv "git url") (getenv "git commit")
|
||
#$output
|
||
#:recursive? recursive?
|
||
#:git-command "git")
|
||
(download-nar #$output)
|
||
|
||
;; As a last resort, attempt to download from Software Heritage.
|
||
;; Disable X.509 certificate verification to avoid depending
|
||
;; on nss-certs--we're authenticating the checkout anyway.
|
||
;; XXX: Currently recursive checkouts are not supported.
|
||
(and (not recursive?)
|
||
(parameterize ((%verify-swh-certificate? #f))
|
||
(format (current-error-port)
|
||
"Trying to download from Software Heritage...~%")
|
||
|
||
(swh-download (getenv "git url") (getenv "git commit")
|
||
#$output)
|
||
(when (file-exists?
|
||
(string-append #$output "/.gitattributes"))
|
||
;; Perform CR/LF conversion and other changes
|
||
;; specificied by '.gitattributes'.
|
||
(invoke "git" "-C" #$output "init")
|
||
(invoke "git" "-C" #$output "config" "--local"
|
||
"user.email" "you@example.org")
|
||
(invoke "git" "-C" #$output "config" "--local"
|
||
"user.name" "Your Name")
|
||
(invoke "git" "-C" #$output "add" ".")
|
||
(invoke "git" "-C" #$output "commit" "-am" "init")
|
||
(invoke "git" "-C" #$output "read-tree" "--empty")
|
||
(invoke "git" "-C" #$output "reset" "--hard")
|
||
(delete-file-recursively
|
||
(string-append #$output "/.git"))))))))))
|
||
|
||
(mlet %store-monad ((guile (package->derivation guile system)))
|
||
(gexp->derivation (or name "git-checkout") build
|
||
|
||
;; Use environment variables and a fixed script name so
|
||
;; there's only one script in store for all the
|
||
;; downloads.
|
||
#:script-name "git-download"
|
||
#:env-vars
|
||
`(("git url" . ,(git-reference-url ref))
|
||
("git commit" . ,(git-reference-commit ref))
|
||
("git recursive?" . ,(object->string
|
||
(git-reference-recursive? ref))))
|
||
#: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 (git-version version revision commit)
|
||
"Return the version string for packages using git-download."
|
||
;; git-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 commit) 7)
|
||
(raise
|
||
(condition
|
||
(&message (message "git-version: commit ID unexpectedly short")))))
|
||
(string-append version "-" revision "." (string-take commit 7)))
|
||
|
||
(define (git-file-name name version)
|
||
"Return the file-name for packages using git-download."
|
||
(string-append name "-" version "-checkout"))
|
||
|
||
|
||
;;;
|
||
;;; 'git-predicate'.
|
||
;;;
|
||
|
||
(define* (git-file-list directory #:optional prefix #:key (recursive? #t))
|
||
"Return the list of files checked in in the Git repository at DIRECTORY.
|
||
The result is similar to that of the 'git ls-files' command, except that it
|
||
also includes directories, not just regular files.
|
||
|
||
When RECURSIVE? is true, also list files in submodules, similar to the 'git
|
||
ls-files --recurse-submodules' command. This is enabled by default.
|
||
|
||
The returned file names are relative to DIRECTORY, which is not necessarily
|
||
the root of the checkout. If a PREFIX is provided, it is prepended to each
|
||
file name."
|
||
(let* (;; 'repository-working-directory' always returns a trailing "/",
|
||
;; so add one here to ease the comparisons below.
|
||
(directory (string-append (canonicalize-path directory) "/"))
|
||
(dot-git (repository-discover directory))
|
||
(repository (repository-open dot-git))
|
||
(workdir (repository-working-directory repository))
|
||
(head (repository-head repository))
|
||
(oid (reference-target head))
|
||
(commit (commit-lookup repository oid))
|
||
(tree (commit-tree commit))
|
||
(files (tree-list tree))
|
||
(submodules (if recursive?
|
||
(map (lambda (name)
|
||
(submodule-path
|
||
(submodule-lookup repository name)))
|
||
(repository-submodules repository))
|
||
'()))
|
||
(relative (and (not (string=? workdir directory))
|
||
(string-drop directory (string-length workdir))))
|
||
(included? (lambda (path)
|
||
(or (not relative)
|
||
(string-prefix? relative path))))
|
||
(make-relative (lambda (path)
|
||
(if relative
|
||
(string-drop path (string-length relative))
|
||
path)))
|
||
(add-prefix (lambda (path)
|
||
(if prefix
|
||
(string-append prefix "/" path)
|
||
path)))
|
||
(rectify (compose add-prefix make-relative)))
|
||
(repository-close! repository)
|
||
(append
|
||
(if (or relative prefix)
|
||
(filter-map (lambda (file)
|
||
(and (included? file)
|
||
(rectify file)))
|
||
files)
|
||
files)
|
||
(append-map (lambda (submodule)
|
||
(if (included? submodule)
|
||
(git-file-list
|
||
(string-append workdir submodule)
|
||
(rectify submodule))
|
||
'()))
|
||
submodules))))
|
||
|
||
(define* (git-predicate directory #:key (recursive? #t))
|
||
"Return a predicate that returns true if a file is part of the Git checkout
|
||
living at DIRECTORY. If DIRECTORY does not lie within a Git checkout, and
|
||
upon Git errors, return #f instead of a predicate.
|
||
|
||
When RECURSIVE? is true, the predicate also returns true if a file is part of
|
||
any Git submodule under DIRECTORY. This is enabled by default.
|
||
|
||
The returned predicate takes two arguments FILE and STAT where FILE is an
|
||
absolute file name and STAT is the result of 'lstat'."
|
||
(libgit2-init!)
|
||
(catch 'git-error
|
||
(lambda ()
|
||
(let* ((files (git-file-list directory #:recursive? recursive?))
|
||
(inodes (fold (lambda (file result)
|
||
(let* ((file (string-append directory "/" file))
|
||
(stat (false-if-exception (lstat file))))
|
||
;; Ignore FILE if it has been deleted.
|
||
(if stat
|
||
(vhash-consv (stat:ino stat) (stat:dev stat)
|
||
result)
|
||
result)))
|
||
vlist-null
|
||
files)))
|
||
(lambda (file stat)
|
||
;; Comparing file names is always tricky business so we rely on inode
|
||
;; numbers instead.
|
||
(match (vhash-assv (stat:ino stat) inodes)
|
||
((_ . dev) (= dev (stat:dev stat)))
|
||
(#f #f)))))
|
||
(const #f)))
|
||
|
||
;;; git-download.scm ends here
|