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download: Honor ‘GUIX_DOWNLOAD_METHODS’ environment variable.

Browse source 
This replaces ‘GUIX_DOWNLOAD_FALLBACK_TEST’ and allows you to test
various download methods, like so:

  GUIX_DOWNLOAD_METHODS=nar guix build guile-gcrypt -S --check
  GUIX_DOWNLOAD_METHODS=disarchive guix build hello -S --check

* guix/build/download.scm (%download-methods): New variable.
(download-method-enabled?): New procedure.
(url-fetch): Define ‘initial-uris’; honor ‘download-method-enabled?’.
Call ‘disarchive-fetch/any’ only when the 'disarchive method is enabled.
* guix/build/git.scm (git-fetch-with-fallback): Honor
‘download-method-enabled?’.
* guix/download.scm (%download-methods): New variable.
(%download-fallback-test): Remove.
(built-in-download): Add #:download-methods parameter and honor it.
(url-fetch*): Pass #:content-addressed-mirrors and #:disarchive-mirrors
unconditionally.
* guix/git-download.scm (git-fetch/in-band*): Pass “git url”
unconditionally.
(git-fetch/built-in): Likewise.  Pass “download-methods”.
* guix/bzr-download.scm (bzr-fetch)[build]: Honor ‘download-method-enabled?’.
Pass ‘GUIX_DOWNLOAD_METHODS’ to #:env-vars.
* guix/cvs-download.scm (cvs-fetch)[build]: Honor ‘download-method-enabled?’.
Pass ‘GUIX_DOWNLOAD_METHODS’ to #:env-vars.
* guix/hg-download.scm (hg-fetch): Honor ‘download-method-enabled?’.
Pass #:env-vars to ‘gexp->derivation’.
* guix/scripts/perform-download.scm (perform-download): Honor
“download-methods” from DRV.  Parameterize ‘%download-methods’ before
calling ‘url-fetch’.
(perform-git-download): Likewise.
* guix/svn-download.scm (svn-fetch): Honor ‘download-method-enabled?’.
Pass ‘GUIX_DOWNLOAD_METHODS’ to #:env-vars.
(svn-multi-fetch): Likewise.

Change-Id: Ia3402e17f0303dfa964bdc761265efe8a1dd69ab
This commit is contained in:
Ludovic Courtès 2024-02-23 14:42:43 +01:00
parent abd0cca2a9
commit 2f441fc738
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GPG key ID: 090B11993D9AEBB5
9 changed files with 230 additions and 154 deletions
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70
guix/scripts/perform-download.scm
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@ -21,7 +21,7 @@
#:use-module (guix scripts)
#:use-module (guix derivations)
#:use-module ((guix store) #:select (derivation-path? store-path?))
#:autoload (guix build download) (url-fetch)
#:autoload (guix build download) (%download-methods url-fetch)
#:autoload (guix build git) (git-fetch-with-fallback)
#:autoload (guix config) (%git)
#:use-module (ice-9 match)
@ -55,7 +55,8 @@ Note: OUTPUT may differ from the 'out' value of DRV, notably for 'bmCheck' or
(executable "executable")
(mirrors "mirrors")
(content-addressed-mirrors "content-addressed-mirrors")
(disarchive-mirrors "disarchive-mirrors"))
(disarchive-mirrors "disarchive-mirrors")
(download-methods "download-methods"))
(unless url
(leave (G_ "~a: missing URL~%") (derivation-file-name drv)))
@ -64,26 +65,30 @@ Note: OUTPUT may differ from the 'out' value of DRV, notably for 'bmCheck' or
(algo (derivation-output-hash-algo drv-output))
(hash (derivation-output-hash drv-output)))
;; We're invoked by the daemon, which gives us write access to OUTPUT.
(when (url-fetch url output
#:print-build-trace? print-build-trace?
#:mirrors (if mirrors
(call-with-input-file mirrors read)
'())
#:content-addressed-mirrors
(if content-addressed-mirrors
(call-with-input-file content-addressed-mirrors
(lambda (port)
(eval (read port) %user-module)))
'())
#:disarchive-mirrors
(if disarchive-mirrors
(call-with-input-file disarchive-mirrors read)
'())
#:hashes `((,algo . ,hash))
(when (parameterize ((%download-methods
(and download-methods
(call-with-input-string download-methods
read))))
(url-fetch url output
#:print-build-trace? print-build-trace?
#:mirrors (if mirrors
(call-with-input-file mirrors read)
'())
#:content-addressed-mirrors
(if content-addressed-mirrors
(call-with-input-file content-addressed-mirrors
(lambda (port)
(eval (read port) %user-module)))
'())
#:disarchive-mirrors
(if disarchive-mirrors
(call-with-input-file disarchive-mirrors read)
'())
#:hashes `((,algo . ,hash))
;; Since DRV's output hash is known, X.509 certificate
;; validation is pointless.
#:verify-certificate? #f)
;; Since DRV's output hash is known, X.509 certificate
;; validation is pointless.
#:verify-certificate? #f))
(when (and executable (string=? executable "1"))
(chmod output #o755))))))
@ -96,7 +101,8 @@ Note: OUTPUT may differ from the 'out' value of DRV, notably for 'bmCheck' or
'bmRepair' builds."
(derivation-let drv ((url "url")
(commit "commit")
(recursive? "recursive?"))
(recursive? "recursive?")
(download-methods "download-methods"))
(unless url
(leave (G_ "~a: missing Git URL~%") (derivation-file-name drv)))
(unless commit
@ -114,14 +120,18 @@ Note: OUTPUT may differ from the 'out' value of DRV, notably for 'bmCheck' or
;; on ambient authority, hence the PATH value below.
(setenv "PATH" "/run/current-system/profile/bin:/bin:/usr/bin")
;; Note: When doing a '--check' build, DRV-OUTPUT and OUTPUT are
;; different, hence the #:item argument below.
(git-fetch-with-fallback url commit output
#:hash hash
#:hash-algorithm algo
#:recursive? recursive?
#:item (derivation-output-path drv-output)
#:git-command %git))))
(parameterize ((%download-methods
(and download-methods
(call-with-input-string download-methods
read))))
;; Note: When doing a '--check' build, DRV-OUTPUT and OUTPUT are
;; different, hence the #:item argument below.
(git-fetch-with-fallback url commit output
#:hash hash
#:hash-algorithm algo
#:recursive? recursive?
#:item (derivation-output-path drv-output)
#:git-command %git)))))
(define (assert-low-privileges)
(when (zero? (getuid))