Skip tests that rely on the `amhello' tarball that comes with Automake.
That tarball's `configure' uses #!/bin/sh, but we can't easily patch it.

diff --git a/t/amhello-binpkg.sh b/t/amhello-binpkg.sh
index fa88cc6..d988cee 100755
--- a/t/amhello-binpkg.sh
+++ b/t/amhello-binpkg.sh
@@ -17,6 +17,7 @@
 # Test an example from the manual about the 'amhello' package:
 # using DESTDIR to build simple, no-frills binary packages.
 
+exit 77
 am_create_testdir=empty
 . ./defs || exit 1
 
diff --git a/t/amhello-cflags.sh b/t/amhello-cflags.sh
index 666011f..2a95e3c 100755
--- a/t/amhello-cflags.sh
+++ b/t/amhello-cflags.sh
@@ -18,6 +18,7 @@
 # using VPATH builds to configure the same package with different
 # options.
 
+exit 77
 am_create_testdir=empty
 required=gcc
 . ./defs || exit 1
diff --git a/t/amhello-cross-compile.sh b/t/amhello-cross-compile.sh
index 708abda..2ee4292 100755
--- a/t/amhello-cross-compile.sh
+++ b/t/amhello-cross-compile.sh
@@ -17,6 +17,7 @@
 # Test an example from the manual about the 'amhello' package:
 # cross-compiling a package from Linux/Unix to MinGW.
 
+exit 77
 am_create_testdir=empty
 required=i586-mingw32msvc-gcc
 . ./defs || exit 1
a11f5e395b6'>refs</a><a class='active' href='/guix/log/tests/channels.scm?showmsg=1'>log</a><a href='/guix/tree/tests/channels.scm?id=d2ce2e0feefe3f1d7d400d9d825c0a11f5e395b6'>tree</a><a href='/guix/commit/tests/channels.scm?id=d2ce2e0feefe3f1d7d400d9d825c0a11f5e395b6'>commit</a><a href='/guix/diff/tests/channels.scm?id=d2ce2e0feefe3f1d7d400d9d825c0a11f5e395b6'>diff</a></td><td class='form'><form class='right' method='get' action='/guix/log/tests/channels.scm'>
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<div class='path'>path: <a href='/guix/log/?id=d2ce2e0feefe3f1d7d400d9d825c0a11f5e395b6&amp;showmsg=1'>root</a>/<a href='/guix/log/tests?id=d2ce2e0feefe3f1d7d400d9d825c0a11f5e395b6&amp;showmsg=1'>tests</a>/<a href='/guix/log/tests/channels.scm?id=d2ce2e0feefe3f1d7d400d9d825c0a11f5e395b6&amp;showmsg=1'>channels.scm</a></div><div class='content'><table class='list nowrap'><tr class='nohover'><th class='left'>Age</th><th class='left'>Commit message (<a href='/guix/log/tests/channels.scm?id=d2ce2e0feefe3f1d7d400d9d825c0a11f5e395b6'>Collapse</a>)</th><th class='left'>Author</th></tr>
<tr class='logheader'><td><span title='2022-10-22 01:46:55 +0200'>2022-10-22</span></td><td class='logsubject'><a href='/guix/commit/tests/channels.scm?id=a3619079f95213c4f983e69210ed12b38fd31022'>Remove now unnecessary uses of (guix grafts).</a></td><td>Ludovic Courtès</td></tr>
<tr class='nohover-highlight'><td/><td colspan='3' class='logmsg'>
These modules would use (guix grafts) just to access '%graft?' and
related bindings, which are now in (guix store).

* gnu/ci.scm,
guix/gexp.scm,
guix/lint.scm,
guix/scripts.scm,
guix/scripts/archive.scm,
guix/scripts/build.scm,
guix/scripts/challenge.scm,
guix/scripts/deploy.scm,
guix/scripts/environment.scm,
guix/scripts/home.scm,
guix/scripts/pack.scm,
guix/scripts/package.scm,
guix/scripts/pull.scm,
guix/scripts/size.scm,
guix/scripts/system.scm,
guix/scripts/weather.scm,
tests/builders.scm,
tests/channels.scm,
tests/cpan.scm,
tests/derivations.scm,
tests/gexp.scm,
tests/graph.scm,
tests/guix-daemon.sh,
tests/monads.scm,
tests/pack.scm,
tests/packages.scm,
tests/profiles.scm,
tests/system.scm: Remove #:use-module (guix grafts).


</td></tr>
<tr class='logheader'><td><span title='2022-02-14 11:23:08 +0100'>2022-02-14</span></td><td class='logsubject'><a href='/guix/commit/tests/channels.scm?id=ca87601dd97dd9d356409827802eb0f8a3a535f0'>git-authenticate: Ensure the target is a descendant of the introductory commit.</a></td><td>Ludovic Courtès</td></tr>
<tr class='nohover-highlight'><td/><td colspan='3' class='logmsg'>
Fixes a bug whereby authentication of a commit *not* descending from the
introductory commit could succeed, provided the commit verifies the
authorization invariant.

In the example below, A is a common ancestor of the introductory commit
I and of commit X.  Authentication of X would succeed, even though it is
not a descendant of I, as long as X is authorized according to the
'.guix-authorizations' in A:

   X   	 I
    \   /
      A

This is because, 'authenticate-repository' would not check whether X
descends from I, and the call (commit-difference X I) would return X.

In practice that only affects forks because it means that ancestors of
the introductory commit already contain a '.guix-authorizations' file.

* guix/git-authenticate.scm (authenticate-repository): Add call to
'commit-descendant?'.
* tests/channels.scm ("authenticate-channel, not a descendant of introductory commit"):
New test.
* tests/git-authenticate.scm ("authenticate-repository, target not a descendant of intro"):
New test.
* tests/guix-git-authenticate.sh: Expect earlier test to fail since
9549f0283a78fe36f2d4ff2a04ef8ad6b0c02604 is not a descendant of
$intro_commit.  Add new test targeting an ancestor of the introductory
commit, and another test targeting the v1.2.0 commit.
* doc/guix.texi (Specifying Channel Authorizations): Add a sentence.


</td></tr>
<tr class='logheader'><td><span title='2021-12-22 10:53:19 +0100'>2021-12-22</span></td><td class='logsubject'><a href='/guix/commit/tests/channels.scm?id=9ebc9ca070a21ba0aeb3f61202a8071bb250ccc8'>tests: Move keys into ./tests/keys/ and add a third ed25519 key.</a></td><td>Attila Lendvai</td></tr>
<tr class='nohover-highlight'><td/><td colspan='3' class='logmsg'>
The third key will be used in an upcoming commit.

Rename public keys to .pub.

* guix/tests/gnupg.scm (%ed25519-3-public-key-file): New variable.
(%ed25519-3-secret-key-file): New variable.
(%ed25519-2-public-key-file): Renamed from %ed25519bis-public-key-file.
(%ed25519-2-secret-key-file): Renamed from %ed25519bis-secret-key-file.
* tests/keys/ed25519-3.key: New file.
* tests/keys/ed25519-3.sec: New file.

Signed-off-by: Mathieu Othacehe &lt;othacehe@gnu.org&gt;


</td></tr>
<tr class='logheader'><td><span title='2021-09-18 19:37:45 +0200'>2021-09-18</span></td><td class='logsubject'><a href='/guix/commit/tests/channels.scm?id=778c1fb4eabbb48c05f6c7555c89466d5249ebce'>channels: 'channel-news-entry-commit' correctly resolves annotated tags.</a></td><td>Ludovic Courtès</td></tr>
<tr class='nohover-highlight'><td/><td colspan='3' class='logmsg'>
Previously, 'channel-news-entry-commit' would return the tag ID rather
than the commit ID when the news entry was referred to via an annotated
tag.

Reported by Xinglu Chen &lt;public@yoctocell.xyz&gt;.

* guix/channels.scm (resolve-channel-news-entry-tag): Check whether the
reference points to annotated tag; resolve it if it does.
* tests/channels.scm ("channel-news, annotated tag"): New test.


</td></tr>