* guix/scripts/package.scm (switch-to-previous-generation): New function.
(roll-back): Use the new function instead of 'switch-link'.
(show-help): Add '--delete-generations'.
(%options): Likewise.
(guix-package)[process-actions]: Add 'current-generation-number',
'display-and-delete', and 'delete-generation'. Add support for
'--delete-generations', and reindent the code.
* tests/guix-package.sh: Test '--delete-generations'.
* doc/guix.texi (Invoking guix-package): Document '--delete-generations'.
* guix/scripts/package.scm (guix-package)[process-query]: Show that a
generation is the current one if the profile points to it.
* tests/guix-package.sh: Test it.
* guix/scripts/package.scm (guix-package)[process-query]: Change
'list-generation' to not list the zeroth generation.
* tests/guix-package.sh: Test it.
* doc/guix.texi (Invoking guix package): Document it, and use the
right term when talking about generations.
* guix/scripts/package.scm (guix-package)[process-query]: Exit with 1
when a generation does not exist or the profile points to the zeroth
generation.
* tests/guix-package.sh: Test the former case.
* guix/scripts/package.scm (guix-package)[process-actions](package->tuple):
Put the output path in the tuple, not the derivation path.
* tests/guix-package.sh: Add test.
* guix/scripts/package.scm (read/eval-package-expression): New
procedure.
(show-help): Add `-e'.
(%options): Likewise.
(guix-package)[process-actions]: Handle ('install . p) pairs, where P
is a package.
* tests/guix-package.sh: Add `boot_make_drv'. Use `-i $boot_make_drv'
once, and then use `-e $boot_make'.
* doc/guix.texi (Invoking guix package): Document `-e'.
* guix/ui.scm (fill-paragraph, string->recutils, package->recutils): New
procedures.
* guix-package.in (guix-package)[process-query]: Use `package->recutils'
to display package meta-data.
* tests/guix-package.sh: Adjust test.
* tests/ui.scm: New file.
* Makefile.am (TESTS): Add it.
* doc/guix.texi (Invoking guix-package): Adjust `--search'
documentation, and give an example.
Suggested by Andreas Enge <andreas@enge.fr> at
<http://lists.gnu.org/archive/html/bug-guix/2013-01/msg00325.html>.
* guix-package.in (latest-profile-number): Remove.
(switch-symlinks): New procedure.
(roll-back)[switch-link]: Use it.
(guix-package)[process-actions]: Always choose NUMBER + 1 for the new
profile. Use `switch-symlinks' instead of `symlink'. Remove code to
delete PROFILE when it exists since `switch-symlinks' has the same
effect.
* tests/guix-package.sh: Adjust existing `--roll-back' tests.
* doc/guix.texi (Invoking guix-package): Document this `--roll-back'
behavior.
Suggested by Andreas Enge <andreas@enge.fr> at
<http://lists.gnu.org/archive/html/bug-guix/2013-01/msg00316.html>.
* guix-package.in (roll-back): Check whether PROFILE is valid using
`file-exists?'. When NUMBER is zero, just emit a notice. When
PREVIOUS-NUMBER is zero and PREVIOUS-PROFILE does not exist, build the
empty profile, and link to it.
* tests/guix-package.sh: Add tests.
* doc/guix.texi (Invoking guix-package): Document the new behavior.
* guix-package.in (guix-package)[parse-options]: Call `leave' when
passed a non-option argument.
Reported by Andreas Enge <andreas@enge.fr>.
* tests/guix-package.sh: Add test.
* guix-package.in (roll-back): Fix file name of PREVIOUS-PROFILE, which
could end up containing the dirname twice.
Reported by Nikita and Andreas.
* tests/guix-package.sh: Add test.
* guix-package.in (profile-numbers): New procedure.
(latest-profile-number): Use it.
(previous-profile-number): New procedure.
(roll-back): Use it lieu of `1-'. Check whether PREVIOUS-NUMBER is
zero, and raise an error when it is.
* tests/guix-package.sh: Test whether we can roll back over a "hole".
Based on a patch by Nikita Karetnikov <nikita@karetnikov.org>.
* guix-package.in (profile-regexp): New procedure.
(latest-profile-number): Remove `%profile-rx', and use
`profile-regexp' instead.
(profile-number, roll-back): New procedure.
(show-help): Add `--roll-back'.
(%options): Likewise.
(guix-package)[process-actions]: First check whether `roll-back?' is
among OPTS, and call `roll-back' if it is, followed by a recursive
call to `process-actions'. Emit the "nothing to be done" message only
when INSTALL or REMOVE is non-empty.
* tests/guix-package.sh (readlink_base): New function.
Add tests for `--roll-back'.
* doc/guix.texi (Invoking guix-package): Document `--roll-back'.
Reported by Andreas Enge.
* guix-package.in (%profile-directory): Honor $NIX_STATE_DIR.
(guix-package)[ensure-default-profile]: Use it.
[process-actions]: Call it when the `profile' option is
%CURRENT-PROFILE.
* tests/guix-package.sh: Add installation test with $HOME set, using the
default profile.
* guix-package.in (%options): Remove #\b as an alternate for
"bootstrap".
(show-help): Adjust accordingly.
* tests/guix-package.sh: Use `--bootstrap' instead of `-b'.
* tests/builders.scm (network-reachable?): New variable.
("url-fetch", "gnu-build"): Skip unless NETWORK-REACHABLE?.
* tests/derivations.scm (%coreutils): Check for network access.
("build-expression->derivation with one input"): Skip when %COREUTILS
is #f.
* tests/guix-package.sh: Skip installation of GNU Make when the network
is unreachable.
* tests/packages.scm ("GNU Make, bootstrap"): Likewise.
* tests/union.scm ("union-build"): Likewise.
* guix-package.in (guix-package)[process-actions]: Compute PACKAGES such
that packages listed in INSTALL* are first removed from the remainder
of the list. When PROF is equal to the previous profile's store path,
do nothing. Reported by Andreas Enge <andreas@enge.fr>.
* tests/guix-package.sh: Test the behavior of installing the same store
path twice. When removing a package, omit its version number.
* guix-package.in (guix-package)[find-package]: Return the correct NAME
and SUB-DRV when NAME contains #\:.
* tests/guix-package.sh (profile): Add test.
