build: Add '--with-channel-commit' and related configure flags.

Partially fixes <https://bugs.gnu.org/45896>.

* m4/guix.m4 (GUIX_CHANNEL_METADATA): New macro.
* configure.ac: Use it.
* guix/config.scm.in (%channel-metadata): Adjust accordingly.
This commit is contained in:
Ludovic Courtès 2021-01-27 22:23:19 +01:00
parent 316fc2acbb
commit 55daad123e
No known key found for this signature in database
GPG Key ID: 090B11993D9AEBB5
3 changed files with 47 additions and 4 deletions

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@ -25,6 +25,7 @@ AM_GNU_GETTEXT_VERSION([0.18.1])
GUIX_SYSTEM_TYPE
GUIX_ASSERT_SUPPORTED_SYSTEM
GUIX_CHANNEL_METADATA
AM_CONDITIONAL([CROSS_COMPILING], [test "x$cross_compiling" = "xyes"])

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@ -61,9 +61,23 @@
(define %channel-metadata
;; When true, this is an sexp containing metadata for the 'guix' channel
;; this file was built from. This is used by (guix describe).
;; TODO: Implement 'configure.ac' machinery to initialize it.
#f)
(let ((url @GUIX_CHANNEL_URL@)
(commit @GUIX_CHANNEL_COMMIT@)
(intro @GUIX_CHANNEL_INTRODUCTION@))
(and url commit
`(repository
(version 0)
(url ,url)
(branch "master") ;XXX: doesn't really matter
(commit ,commit)
(name guix)
,@(if intro
`((introduction
(channel-introduction
(version 0)
(commit ,(car intro))
(signer ,(cdr intro)))))
'())))))
(define %storedir
"@storedir@")

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@ -1,5 +1,5 @@
dnl GNU Guix --- Functional package management for GNU
dnl Copyright © 2012, 2013, 2014, 2015, 2016, 2018, 2019, 2020 Ludovic Courtès <ludo@gnu.org>
dnl Copyright © 2012, 2013, 2014, 2015, 2016, 2018, 2019, 2020, 2021 Ludovic Courtès <ludo@gnu.org>
dnl Copyright © 2014 Mark H Weaver <mhw@netris.org>
dnl Copyright © 2017 Efraim Flashner <efraim@flashner.co.il>
dnl
@ -398,3 +398,31 @@ that of the existing installation '$guix_cv_current_localstatedir'])
esac
fi
fi])
dnl GUIX_CHANNEL_METADATA
dnl
dnl Provide the channel metadata for this build. This allows 'guix describe'
dnl to return meaningful data, as it would for a 'guix pull'-provided 'guix'.
dnl The default URL and introduction are taken from (guix channels).
AC_DEFUN([GUIX_CHANNEL_METADATA], [
AC_ARG_WITH([channel-url], [AS_HELP_STRING([--with-channel-url=URL],
[assert that this is built from the Git repository at URL])],
[guix_channel_url="\"$withval\""],
[guix_channel_url="\"https://git.savannah.gnu.org/git/guix.git\""])
AC_ARG_WITH([channel-commit], [AS_HELP_STRING([--with-channel-commit=COMMIT],
[assert that this is built from COMMIT])],
[guix_channel_commit="\"$withval\""],
[guix_channel_commit="#f"])
AC_ARG_WITH([channel-introduction], [AS_HELP_STRING([--with-channel-introduction=COMMIT:FINGERPRINT],
[specify COMMIT and FINGERPRINT as the introduction of this channel])],
[guix_channel_introduction="'(\"`echo $withval | cut -f1 -d:`\" \"`echo $withval | cut -f2 -d:`\")"],
[guix_channel_introduction="'(\"9edb3f66fd807b096b48283debdcddccfea34bad\" . \"BBB0 2DDF 2CEA F6A8 0D1D E643 A2A0 6DF2 A33A 54FA\")"])
GUIX_CHANNEL_URL="$guix_channel_url"
GUIX_CHANNEL_COMMIT="$guix_channel_commit"
GUIX_CHANNEL_INTRODUCTION="$guix_channel_introduction"
AC_SUBST([GUIX_CHANNEL_URL])
AC_SUBST([GUIX_CHANNEL_COMMIT])
AC_SUBST([GUIX_CHANNEL_INTRODUCTION])
])