profiles: 'profile-derivation' rejects unsupported packages.

Previously user-facing commands would happily start building packages
even if they do not support that system.  With this change, all the
user-facing commands reject unsupported packages without going further.

* guix/profiles.scm (profile-derivation): Add #:allow-unsupported-packages?.
Define 'check-supported-packages' and honor #:allow-unsupported-packages?.
* tests/guix-pack.sh, tests/guix-package.sh, tests/guix-shell.sh: Ensure
that unsupported packages are rejected.
* tests/guix-system.sh: Pass "--system=armhf-linux" when attempting to
build gnu/system/examples/asus-c201.tmpl.

1 files changed, 4 insertions, 1 deletions

diff --git a/tests/guix-pack.sh b/tests/guix-pack.sh
index 0339221ac25..1356a740837 100644
--- a/tests/guix-pack.sh
+++ b/tests/guix-pack.sh
@@ -1,6 +1,6 @@
 # GNU Guix --- Functional package management for GNU
 # Copyright © 2018 Chris Marusich <cmmarusich@gmail.com>
-# Copyright © 2018, 2019, 2020 Ludovic Courtès <ludo@gnu.org>
+# Copyright © 2018, 2019, 2020, 2022 Ludovic Courtès <ludo@gnu.org>
 #
 # This file is part of GNU Guix.
 #
@@ -36,6 +36,9 @@ export GUIX_BUILD_OPTIONS
 test_directory="`mktemp -d`"
 trap 'chmod -Rf +w "$test_directory"; rm -rf "$test_directory"' EXIT
 
+# Reject unsuppoted packages.
+! guix pack intelmetool -s armhf-linux -n
+
 # Compute the derivation of a pack.
 drv="`guix pack coreutils -d --no-grafts`"
 guix gc -R "$drv" | grep "`guix build coreutils -d --no-grafts`"