# GNU Guix --- Functional package management for GNU
# Copyright © 2018, 2019 Ludovic Courtès <ludo@gnu.org>
#
# This file is part of GNU Guix.
#
# GNU Guix is free software; you can redistribute it and/or modify it
# under the terms of the GNU General Public License as published by
# the Free Software Foundation; either version 3 of the License, or (at
# your option) any later version.
#
# GNU Guix is distributed in the hope that it will be useful, but
# WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
# GNU General Public License for more details.
#
# You should have received a copy of the GNU General Public License
# along with GNU Guix.  If not, see <http://www.gnu.org/licenses/>.

#
# Test the 'guix pack --relocatable' using the external store, if any.
#

guix pack --version

# 'guix pack --relocatable' requires a C compiler and libc.a, which our
# bootstrap binaries don't provide.  To make the test relatively inexpensive,
# run it on the user's global store if possible, on the grounds that binaries
# may already be there or can be built or downloaded inexpensively.

storedir="`guile -c '(use-modules (guix config))(display %storedir)'`"
localstatedir="`guile -c '(use-modules (guix config))(display %localstatedir)'`"
NIX_STORE_DIR="$storedir"
GUIX_DAEMON_SOCKET="$localstatedir/guix/daemon-socket/socket"
export NIX_STORE_DIR GUIX_DAEMON_SOCKET

if ! guile -c '(use-modules (guix)) (exit (false-if-exception (open-connection)))'
then
    exit 77
fi

STORE_PARENT="`dirname $NIX_STORE_DIR`"
export STORE_PARENT
if test "$STORE_PARENT" = "/"; then exit 77; fi

if unshare -mrf sh -c 'mount -t tmpfs none "$STORE_PARENT"'
then
    # Test the wrapper that relies on user namespaces.
    relocatable_option="-R"
else
    case "`uname -m`" in
	x86_64|i?86)
	    # Test the wrapper that falls back to PRoot.
	    relocatable_option="-RR";;
	*)
	    # XXX: Our 'proot' package currently fails tests on non-Intel
	    # architectures, so skip this by default.
	    exit 77;;
    esac
fi

test_directory="`mktemp -d`"
export test_directory
trap 'chmod -Rf +w "$test_directory"; rm -rf "$test_directory"' EXIT

export relocatable_option
tarball="`guix pack $relocatable_option -S /Bin=bin sed`"
(cd "$test_directory"; tar xvf "$tarball")

if unshare -r true		# Are user namespaces supported?
then
    # Run that relocatable 'sed' in a user namespace where we "erase" the store by
    # mounting an empty file system on top of it.  That way, we exercise the
    # wrapper code that creates the user namespace and bind-mounts the store.
    unshare -mrf sh -c 'mount -t tmpfs none "$STORE_PARENT"; echo "$STORE_PARENT"/*; "$test_directory/Bin/sed" --version > "$test_directory/output"'
else
    # Run the relocatable 'sed' in the current namespaces.  This is a weak
    # test because we're going to access store items from the host store.
    "$test_directory/Bin/sed" --version > "$test_directory/output"
fi
grep 'GNU sed' "$test_directory/output"
chmod -Rf +w "$test_directory"; rm -rf "$test_directory"/*

# Ensure '-R' works with outputs other than "out".
tarball="`guix pack -R -S /share=share groff:doc`"
(cd "$test_directory"; tar xvf "$tarball")
test -d "$test_directory/share/doc/groff/html"
06-16 11:32:53 +0200'>2020-06-16</span></td><td><a href='/guix/commit/configure.ac?id=76a841cc8bd091db741758ae5553c714f2c38543'>etc: Add committer script.</a><span class='msg-avail'>...</span></td><td>Ricardo Wurmus</td></tr>
<tr><td><span title='2020-05-28 00:55:00 +0200'>2020-05-28</span></td><td><a href='/guix/commit/configure.ac?id=c1dc50ab202fafedde3a6b70ce6339496ad53a51'>maint: Check whether Guile-Gcrypt is recent enough.</a><span class='msg-avail'>...</span></td><td>Ludovic Courtès</td></tr>
<tr><td><span title='2020-05-14 23:05:42 -0400'>2020-05-14</span></td><td><a href='/guix/commit/configure.ac?id=cb21ae76714f1873d3b3fb40d5135f00ec104b85'>etc: indent-code.el: Use the --quick option.</a><span class='msg-avail'>...</span></td><td>Maxim Cournoyer</td></tr>
<tr><td><span title='2020-04-23 23:59:23 +0200'>2020-04-23</span></td><td><a href='/guix/commit/configure.ac?id=62bc3c5b04d43ccd24922e45b79fab00f7298e10'>build: Don't build man pages when cross-compiling.</a><span class='msg-avail'>...</span></td><td>Ludovic Courtès</td></tr>
<tr><td><span title='2020-03-11 18:42:09 +0100'>2020-03-11</span></td><td><a href='/guix/commit/configure.ac?id=e688c2df3924423b67892cc9939ca099c729d1cb'>build: Require Guile 2.2.3 or later.</a><span class='msg-avail'>...</span></td><td>Ludovic Courtès</td></tr>
<tr><td><span title='2020-01-17 17:14:20 +0100'>2020-01-17</span></td><td><a href='/guix/commit/configure.ac?id=7b2a47a702b7393cd968640079f8703c932d1405'>build: Allow builds with Guile 3.0.</a><span class='msg-avail'>...</span></td><td>Ludovic Courtès</td></tr>
<tr><td><span title='2019-11-09 00:36:53 +0100'>2019-11-09</span></td><td><a href='/guix/commit/configure.ac?id=c8364ebca82f39fc10ca8b578584b7d1ff546cb1'>build: Warn about etc/indent-code.el when Emacs is absent.</a><span class='msg-avail'>...</span></td><td>zimoun</td></tr>
<tr><td><span title='2019-07-25 00:16:41 +0200'>2019-07-25</span></td><td><a href='/guix/commit/configure.ac?id=81c3dc32244a17241d74eea9fa265edfcb326f6d'>maint: Switch to Guile-JSON 3.x.</a><span class='msg-avail'>...</span></td><td>Ludovic Courtès</td></tr>