# GNU Guix --- Functional package management for GNU
# Copyright © 2015 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 'guix environment'.
#

set -e

guix environment --version

tmpdir="t-guix-environment-$$"
trap 'rm -r "$tmpdir"' EXIT

mkdir "$tmpdir"

# Check the environment variables for the bootstrap Guile.
guix environment --ad-hoc guile-bootstrap --pure --search-paths > "$tmpdir/a"

# $PATH must appear in the search paths, and nothing else.
grep -E '^export PATH=.*guile-bootstrap-[0-9.]+/bin' "$tmpdir/a"
test "`wc -l < "$tmpdir/a"`" = 1

if guile -c '(getaddrinfo "www.gnu.org" "80" AI_NUMERICSERV)' 2> /dev/null
then
    # Compute the build environment for the initial GNU Make.
    guix environment -e '(@@ (gnu packages commencement) gnu-make-boot0)' \
	 --no-substitutes --search-paths --pure > "$tmpdir/a"

    # Make sure the bootstrap binaries are all listed where they belong.
    grep -E '^export PATH=.*-bootstrap-binaries-0/bin'      "$tmpdir/a"
    grep -E '^export CPATH=.*-gcc-bootstrap-0/include'      "$tmpdir/a"
    grep -E '^export CPATH=.*-glibc-bootstrap-0/include'    "$tmpdir/a"
    grep -E '^export LIBRARY_PATH=.*-glibc-bootstrap-0/lib' "$tmpdir/a"

    # 'make-boot0' itself must not be listed.
    if grep "make-boot0" "$tmpdir/a"; then false; else true; fi

    # Make sure that the shell spawned with '--exec' sees the same environment
    # as returned by '--search-paths'.
    guix environment -e '(@@ (gnu packages commencement) gnu-make-boot0)'	\
	 --no-substitutes --pure						\
         --exec='echo $PATH $CPATH $LIBRARY_PATH' > "$tmpdir/b"
    ( . "$tmpdir/a" ; echo $PATH $CPATH $LIBRARY_PATH ) > "$tmpdir/c"
    cmp "$tmpdir/b" "$tmpdir/c"

    rm "$tmpdir"/*

    # Compute the build environment for the initial GNU Findutils.
    guix environment -e '(@@ (gnu packages commencement) findutils-boot0)' \
	 --no-substitutes --search-paths --pure > "$tmpdir/a"

    # Make sure the bootstrap binaries are all listed where they belong.
    grep -E '^export PATH=.*-bootstrap-binaries-0/bin'      "$tmpdir/a"
    grep -E '^export PATH=.*-make-boot0-[0-9.]+/bin'        "$tmpdir/a"
    grep -E '^export CPATH=.*-gcc-bootstrap-0/include'      "$tmpdir/a"
    grep -E '^export CPATH=.*-glibc-bootstrap-0/include'    "$tmpdir/a"
    grep -E '^export LIBRARY_PATH=.*-glibc-bootstrap-0/lib' "$tmpdir/a"

    # The following test assumes 'make-boot0' has a "debug" output.
    make_boot0_debug="`guix build -e '(@@ (gnu packages commencement) gnu-make-boot0)' | grep -e -debug`"
    test "x$make_boot0_debug" != "x"

    # Make sure the "debug" output is not listed.
    if grep -E "$make_boot0_debug" "$tmpdir/a"; then false; else true; fi
fi
