[bug#27865] [PATCH 1/3] build: Make Guile-Git a hard requirement.

[Ludovic Courtès]

* configure.ac: Error out when (git) is missing.
* doc/guix.texi (Requirements): Mention Guile-Git.
* Makefile.am (MODULES): Add guix/git.scm unconditionally.
---
 Makefile.am   |  8 +-------
 configure.ac  | 10 ++++++----
 doc/guix.texi |  4 ++++
 3 files changed, 11 insertions(+), 11 deletions(-)

diff --git a/Makefile.am b/Makefile.am
index 5888bc026..0a7e375c2 100644
--- a/Makefile.am
+++ b/Makefile.am
@@ -66,6 +66,7 @@ MODULES =                                     \
   guix/gnu-maintenance.scm                     \
   guix/upstream.scm                            \
   guix/licenses.scm                            \
+  guix/git.scm                                 \
   guix/graph.scm                               \
   guix/cache.scm                               \
   guix/cve.scm                                 \
@@ -207,13 +208,6 @@ MODULES +=                                 \
 
 endif HAVE_GUILE_SSH
 
-if HAVE_GUILE_GIT
-
-MODULES +=                                     \
-  guix/git.scm
-
-endif HAVE_GUILE_GIT
-
 if BUILD_DAEMON_OFFLOAD
 
 MODULES +=                                     \
diff --git a/configure.ac b/configure.ac
index 2b75c900c..9ad7598f8 100644
--- a/configure.ac
+++ b/configure.ac
@@ -100,14 +100,16 @@ if test "x$have_gnutls" != "xyes"; then
   AC_MSG_ERROR([The Guile bindings of GnuTLS are missing; please install 
them.])
 fi
 
+dnl Check for Guile-Git.
+GUILE_MODULE_AVAILABLE([have_guile_git], [(git)])
+if test "x$have_guile_git" != "xyes"; then
+  AC_MSG_ERROR([Guile-Git is missing; please install it.])
+fi
+
 dnl Guile-JSON is used in various places.
 GUILE_MODULE_AVAILABLE([have_guile_json], [(json)])
 AM_CONDITIONAL([HAVE_GUILE_JSON], [test "x$have_guile_json" = "xyes"])
 
-dnl Check for Guile-Git.
-GUILE_MODULE_AVAILABLE([have_guile_git], [(git)])
-AM_CONDITIONAL([HAVE_GUILE_GIT], [test "x$have_guile_git" = "xyes"])
-
 dnl Make sure we have a full-fledged Guile.
 GUIX_ASSERT_GUILE_FEATURES([regex posix socket net-db threads])
 
diff --git a/doc/guix.texi b/doc/guix.texi
index e8c4e0eaf..3a58c389c 100644
--- a/doc/guix.texi
+++ b/doc/guix.texi
@@ -579,6 +579,10 @@ later, including 2.2.x;
 @uref{http://gnutls.org/, GnuTLS}, specifically its Guile bindings
 (@pxref{Guile Preparations, how to install the GnuTLS bindings for
 Guile,, gnutls-guile, GnuTLS-Guile});
address@hidden
address@hidden FIXME: Specify a version number once a release has been made.
address@hidden://gitlab.com/guile-git/guile-git, Guile-Git}, from August
+2017 or later;
 @item @url{http://www.gnu.org/software/make/, GNU Make}.
 @end itemize
 
-- 
2.13.3