01/03: build: Remove check for Guile 2.2.1 bug.

[guix-commits]

civodul pushed a commit to branch master
in repository guix.

commit f5d3a1690cb78ce9413b78352f1030bf4801617a
Author: Ludovic Courtès <ludo@gnu.org>
AuthorDate: Sat Aug 29 12:27:38 2020 +0200

    build: Remove check for Guile 2.2.1 bug.
    
    This check is unnecessary since
    e688c2df3924423b67892cc9939ca099c729d1cb.
    
    * m4/guix.m4 (GUIX_ASSERT_SYNTAX_OBJECT_EQUAL): Remove.
    * configure.ac: Remove user.
---
 configure.ac |  4 ----
 m4/guix.m4   | 20 --------------------
 2 files changed, 24 deletions(-)

diff --git a/configure.ac b/configure.ac
index 5d549cc..7959d08 100644
--- a/configure.ac
+++ b/configure.ac
@@ -171,10 +171,6 @@ AM_CONDITIONAL([ENABLE_INSTALLER],
 dnl Make sure we have a full-fledged Guile.
 GUIX_ASSERT_GUILE_FEATURES([regex posix socket net-db threads])
 
-dnl Make sure we don't suffer from the bug in 'equal?' wrt. syntax objects
-dnl found in 2.2.1.  See <https://bugs.gnu.org/29903>.
-GUIX_ASSERT_SYNTAX_OBJECT_EQUAL
-
 AC_PROG_SED
 
 dnl Decompressors, for use by the substituter and other modules.
diff --git a/m4/guix.m4 b/m4/guix.m4
index b7bf74c..7256e79 100644
--- a/m4/guix.m4
+++ b/m4/guix.m4
@@ -118,26 +118,6 @@ AC_DEFUN([GUIX_ASSERT_GUILE_FEATURES], [
   done
 ])
 
-dnl GUIX_ASSERT_SYNTAX_OBJECT_EQUAL
-dnl
-dnl Guile 2.2.1 was a brown-paper-bag release where 'equal?' wouldn't work
-dnl for syntax objects, which broke gexps.  Unfortunately Fedora 25 provides 
it.
-dnl Reject it.
-AC_DEFUN([GUIX_ASSERT_SYNTAX_OBJECT_EQUAL], [
-  AC_CACHE_CHECK([whether 'equal?' works for syntax objects],
-    [ac_cv_guix_syntax_object_equal],
-    [if "$GUILE" -c '(exit (equal? (syntax x) (syntax x)))'
-     then
-       ac_cv_guix_syntax_object_equal=yes
-     else
-       ac_cv_guix_syntax_object_equal=no
-     fi])
-  if test "x$ac_cv_guix_syntax_object_equal" != xyes; then
-    # This bug was present in Guile 2.2.1 only.
-    AC_MSG_ERROR(['equal?' does not work for syntax object; upgrade to Guile 
2.2.2 or later.])
-  fi
-])
-
 dnl GUIX_CHECK_GUILE_SSH
 dnl
 dnl Check whether a recent-enough Guile-SSH is available.