scripts: environment: Add --container option.

* guix/scripts/system.scm (specification->file-system-mapping): Move from
  here...
* guix/ui.scm (specification->file-system-mapping): ... to here.
* guix/scripts/enviroment.scm (show-help): Show help for new options.
  (%options): Add --container --network, --expose, and --share options.
  (%network-configuration-files): New variable.
  (launch-environment, launch-environment/container, requisites*,
  inputs->requisites): New procedures.
  (guix-environment): Spawn new process in a container when requested.
* doc/guix.texi (Invoking guix environment): Document it.
* tests/guix-environment-container.sh: New file.
* Makefile.am (SH_TESTS): Add it.

1 files changed, 75 insertions, 0 deletions

diff --git a/tests/guix-environment-container.sh b/tests/guix-environment-container.sh
new file mode 100644
index 0000000000..9c3e93dd8c
--- /dev/null
+++ b/tests/guix-environment-container.sh
@@ -0,0 +1,75 @@
+# GNU Guix --- Functional package management for GNU
+# Copyright © 2015 David Thompson <davet@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"
+
+# Make sure the exit value is preserved.
+if guix environment --container --ad-hoc --bootstrap guile-bootstrap \
+        -- guile -c '(exit 42)'
+then
+    false
+else
+    test $? = 42
+fi
+
+# Make sure that the right directories are mapped.
+mount_test_code="
+(use-modules (ice-9 rdelim)
+             (ice-9 match)
+             (srfi srfi-1))
+
+(define mappings
+  (filter-map (lambda (line)
+                (match (string-split line #\space)
+                  ;; Empty line.
+                  ((\"\") #f)
+                  ;; Ignore these types of file systems.
+                  ((_ _ (or \"tmpfs\" \"proc\" \"sysfs\" \"devtmpfs\"
+                            \"devpts\" \"cgroup\" \"mqueue\") _ _ _)
+                   #f)
+                  ((_ mount _ _ _ _)
+                   mount)))
+              (string-split (call-with-input-file \"/proc/mounts\" read-string)
+                            #\newline)))
+
+(for-each (lambda (mount)
+            (display mount)
+            (newline))
+          mappings)"
+
+guix environment --container --ad-hoc --bootstrap guile-bootstrap \
+     -- guile -c "$mount_test_code" > $tmpdir/mounts
+
+test `wc -l < $tmpdir/mounts` -eq 3
+
+grep -e "$PWD$" $tmpdir/mounts # current directory
+grep $(guix build guile-bootstrap) $tmpdir/mounts
+grep -e "$NIX_STORE_DIR/.*-bash" $tmpdir/mounts # bootstrap bash
+
+rm $tmpdir/mounts