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tests: Invoke 'git' with a custom '.gitconfig' and ignore the system config.

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Fixes <https://bugs.gnu.org/37679>.
Reported by Gábor Boskovits <boskovits@gmail.com>.

* guix/tests/git.scm (call-with-environment-variables): New procedure.
(with-environment-variables): New macro.
(populate-git-repository)[git]: Wrap (git-command) invocation in
'call-with-temporary-directory' and 'with-environment-variables'.
This commit is contained in:
Ludovic Courtès 2020-04-19 13:16:52 +02:00
parent 0639a24038
commit 3c91f00341
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GPG key ID: 090B11993D9AEBB5
1 changed files with 34 additions and 3 deletions
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35
guix/tests/git.scm
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@ -1,5 +1,5 @@
;;; GNU Guix --- Functional package management for GNU ;;; GNU Guix --- Functional package management for GNU
;;; Copyright © 2019 Ludovic Courtès <ludo@gnu.org> ;;; Copyright © 2019, 2020 Ludovic Courtès <ludo@gnu.org>
;;; ;;;
;;; This file is part of GNU Guix. ;;; This file is part of GNU Guix.
;;; ;;;
@ -30,6 +30,24 @@
(define git-command (define git-command
(make-parameter "git")) (make-parameter "git"))
(define (call-with-environment-variables variables thunk)
"Call THUNK with the environment VARIABLES set."
(let ((environment (environ)))
(dynamic-wind
(lambda ()
(for-each (match-lambda
((variable value)
(setenv variable value)))
variables))
thunk
(lambda ()
(environ environment)))))
(define-syntax-rule (with-environment-variables variables exp ...)
"Evaluate EXP with the given environment VARIABLES set."
(call-with-environment-variables variables
(lambda () exp ...)))
(define (populate-git-repository directory directives) (define (populate-git-repository directory directives)
"Initialize a new Git checkout and repository in DIRECTORY and apply "Initialize a new Git checkout and repository in DIRECTORY and apply
DIRECTIVES. Each element of DIRECTIVES is an sexp like: DIRECTIVES. Each element of DIRECTIVES is an sexp like:
@ -41,8 +59,21 @@ Return DIRECTORY on success."
;; Note: As of version 0.2.0, Guile-Git lacks the necessary bindings to do ;; Note: As of version 0.2.0, Guile-Git lacks the necessary bindings to do
;; all this, so resort to the "git" command. ;; all this, so resort to the "git" command.
(define (git command . args) (define (git command . args)
;; Make sure Git doesn't rely on the user's config.
(call-with-temporary-directory
(lambda (home)
(call-with-output-file (string-append home "/.gitconfig")
(lambda (port)
(display "[user]
email = charlie@example.org\n name = Charlie Guix\n"
port)))
(with-environment-variables
`(("GIT_CONFIG_NOSYSTEM" "1")
("GIT_ATTR_NOSYSTEM" "1")
("HOME" ,home))
(apply invoke (git-command) "-C" directory (apply invoke (git-command) "-C" directory
command args)) command args)))))
(mkdir-p directory) (mkdir-p directory)
(git "init") (git "init")