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08/08: pack: Add test for '--relocatable'.

From: Ludovic Courtès
Subject: 08/08: pack: Add test for '--relocatable'.
Date: Tue, 6 Nov 2018 17:21:33 -0500 (EST)

civodul pushed a commit to branch master
in repository guix.

commit b07014f55ae083f589ea286fca30890a9d705153
Author: Ludovic Courtès <address@hidden>
Date:   Sun Nov 4 22:54:46 2018 +0100

    pack: Add test for '--relocatable'.
    * tests/ New file.
    * (SH_TESTS): Add it.
---                    |  1 +
 tests/ | 61 ++++++++++++++++++++++++++++++++++++++++++
 2 files changed, 62 insertions(+)

diff --git a/ b/
index 7e4b2b9..c63b65b 100644
--- a/
+++ b/
@@ -406,6 +406,7 @@ SH_TESTS =                                  \
   tests/                             \
   tests/                           \
   tests/                           \
+  tests/               \
   tests/                                \
   tests/                    \
   tests/                         \
diff --git a/tests/ b/tests/
new file mode 100644
index 0000000..5544166
--- /dev/null
+++ b/tests/
@@ -0,0 +1,61 @@
+# GNU Guix --- Functional package management for GNU
+# Copyright © 2018 Ludovic Courtès <address@hidden>
+# 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
+# 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 <>.
+# 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.
+NIX_STORE_DIR="`guile -c '(use-modules (guix config))(display %storedir)'`"
+localstatedir="`guile -c '(use-modules (guix config))(display 
+if ! guile -c '(use-modules (guix)) (exit (false-if-exception 
+    exit 77
+if test "$STORE_PARENT" = "/"; then exit 77; fi
+# This test requires user namespaces and associated command-line tools.
+if ! unshare -mrf sh -c 'mount -t tmpfs none "$STORE_PARENT"'
+    exit 77
+test_directory="`mktemp -d`"
+export test_directory
+trap 'chmod -Rf +w "$test_directory"; rm -rf "$test_directory"' EXIT
+tarball="`guix pack -R -S /Bin=bin sed`"
+(cd "$test_directory"; tar xvf "$tarball")
+# 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"/*; "$test_directory/Bin/sed" --version > 
+grep 'GNU sed' "$test_directory/output"

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