* gnu/packages/aux-files/run-in-namespace.c (HAVE_EXEC_WITH_LOADER): New
macro.
(bind_mount): Rename to...
(mirror_directory): ... this. Add 'firmlink' argument and use it
instead of calling mkdir/open/close/mount directly.
(bind_mount, make_symlink): New functions.
(exec_in_user_namespace): Adjust accordingly.
(exec_with_loader) [HAVE_EXEC_WITH_LOADER]: New function.
(exec_performance): New function.
(engines): Add them.
* guix/scripts/pack.scm (wrapped-package)[fakechroot-library]
[audit-module]: New procedures.
[audit-source]: New variable.
[build](elf-interpreter, elf-loader-compile-flags): New procedures.
(build-wrapper): Use them.
* tests/guix-pack-relocatable.sh: Test with
'GUIX_EXECUTION_ENGINE=fakechroot'.
* doc/guix.texi (Invoking guix pack): Document the 'performance' and
'fakechroot' engines.
* gnu/packages/aux-files/pack-audit.c: New file.
* Makefile.am (AUX_FILES): Add it.
* gnu/packages/aux-files/run-in-namespace.c (struct engine): New type.
(exec_default): New function.
(engines): New variable.
(execution_engine): New function.
(main): Use it instead of calling 'exec_in_user_namespace' and
'exec_with_proot' directly.
* tests/guix-pack-relocatable.sh: Add test with 'GUIX_EXECUTION_ENGINE'.
* doc/guix.texi (Invoking guix pack): Document 'GUIX_EXECUTION_ENGINE'.
Fixes <https://bugs.gnu.org/40816>.
Reported by Jan (janneke) Nieuwenhuizen <janneke@gnu.org>.
* gnu/packages/aux-files/run-in-namespace.c (main): In the 'default'
case, check 'WIFEXITED (status)' and exit with the corresponding code in
that case. Exit with 255 in other cases.
* tests/guix-pack-relocatable.sh: Add test.
Fixes <https://bugs.gnu.org/36925>.
Reported by Jesse Gibbons <jgibbons2357@gmail.com>.
* guix/scripts/pack.scm (wrapped-package): Add 'output*' parameter.
[build]: Define 'input' and 'target'; use them instead of #$package and
#$output, respectively.
(wrapped-manifest-entry): New procedure.
(map-manifest-entries): Call PROC directly.
(guix-pack): Pass WRAPPED-MANIFEST-ENTRY to 'map-manifest-entries'.
Fixes <https://bugs.gnu.org/35776>.
Reported by Ting-Wei Lan <lantw44@gmail.com>.
* tests/guix-pack-localstatedir.sh: Set 'storedir' before
'NIX_STORE_DIR'.
* tests/guix-pack-relocatable.sh: Likewise.
Fixes <https://bugs.gnu.org/35642>.
Reported by Josh Holland <josh@inv.alid.pw>.
* tests/guix-pack-relocatable.sh: Before invoking 'unshare' at the
bottom, add "if unshare -r true" condition.
* tests/guix-pack.sh: Likewise.
* gnu/packages/aux-files/run-in-namespace.c (exec_with_proot): New
function.
(main): When 'clone' fails, call 'rm_rf'.
[PROOT_PROGRAM]: When 'clone' fails, call 'exec_with_proot'.
* guix/scripts/pack.scm (wrapped-package): Add #:proot?.
[proot]: New procedure.
[build]: Compile with -DPROOT_PROGRAM when PROOT? is true.
* guix/scripts/pack.scm (%options): Set the 'relocatable?' value to
'proot when "-R" is passed several times.
(guix-pack): Pass #:proot? to 'wrapped-package'.
* tests/guix-pack-relocatable.sh: Use "-RR" on Intel systems that lack
user namespace support.
* doc/guix.texi (Invoking guix pack): Document -RR.
