/* GNU Guix --- Functional package management for GNU
   Copyright (C) 2016, 2017, 2018, 2019 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/>.  */

#include <builtins.hh>
#include <util.hh>
#include <globals.hh>

#include <unistd.h>
#include <cstdlib>

namespace nix {

static void builtinDownload(const Derivation &drv,
			    const std::string &drvPath,
			    const std::string &output)
{
    /* Invoke 'guix perform-download'.  */
    Strings args;
    args.push_back("perform-download");
    args.push_back(drvPath);

    /* Close all other file descriptors. */
    closeMostFDs(set<int>());

    const char *const argv[] =
      {
	  "guix", "perform-download", drvPath.c_str(), output.c_str(), NULL
      };

    /* Tell the script what the store file name is, so that
       'strip-store-file-name' (used for instance to determine the URL of
       content-addressed mirrors) works correctly.  */
    setenv("NIX_STORE", settings.nixStore.c_str(), 1);

    /* Tell it about options such as "print-extended-build-trace".  */
    setenv("_NIX_OPTIONS", settings.pack().c_str(), 1);

    const string program = settings.guixProgram;
    execv(program.c_str(), (char *const *) argv);

    throw SysError(format("failed to run download program '%1%'") % program);
}

static const std::map<std::string, derivationBuilder> builtins =
{
    { "download", builtinDownload }
};

derivationBuilder lookupBuiltinBuilder(const std::string & name)
{
    if (name.substr(0, 8) == "builtin:")
    {
	auto realName = name.substr(8);
	auto builder = builtins.find(realName);
	return builder == builtins.end() ? NULL : builder->second;
    }
    else
	return NULL;
}

std::list<std::string> builtinBuilderNames()
{
    std::list<std::string> result;
    for(auto&& iter: builtins)
    {
	result.push_back(iter.first);
    }
    return result;
}

}
ft'>Author</th></tr>
<tr class='logheader'><td><span title='2023-11-15 18:29:37 +0100'>2023-11-15</span></td><td class='logsubject'><a href='/guix/commit/tests?id=69d9a020949c77c77b449c1faf04397b95eef5b7'>locate: Accept ‘--clear’ without additional arguments.</a></td><td>Ludovic Courtès</td></tr>
<tr class='nohover-highlight'><td/><td colspan='3' class='logmsg'>
Fixes a bug whereby ‘guix locate --clear’ would end with the “no files
to search for” error.

Fixes &lt;https://issues.guix.gnu.org/66799&gt;.

* guix/scripts/locate.scm (guix-locate): Do not emit “no files to search
for” error when 'clear? is set in OPTS.
* tests/guix-locate.sh: Test it.

Reported-by: Maciej Kalandyk &lt;m.kalandyk@outlook.com&gt;
Change-Id: Ib8fa125c18481d7f5408bd89df9503713527641d


</td></tr>
<tr class='logheader'><td><span title='2023-11-11 11:07:27 +0100'>2023-11-11</span></td><td class='logsubject'><a href='/guix/commit/tests?id=fd11d7fbf8e0fcc61ff764dcc0ab737971afc55a'>guix: syscalls: Add terminal-string-width.</a></td><td>Julien Lepiller</td></tr>
<tr class='nohover-highlight'><td/><td colspan='3' class='logmsg'>
* guix/build/syscalls.scm (terminal-width): New procedure.
* tests/syscalls.scm: Add tests.

Change-Id: I6c2caa9fbaffb1e8f4b8933103399be970d5a8f3


</td></tr>
<tr class='logheader'><td><span title='2023-11-05 23:23:23 +0100'>2023-11-05</span></td><td class='logsubject'><a href='/guix/commit/tests?id=9f05fbb67d0de4d577c21a6fb6888cb6be67cd12'>tests: Make ‘guix time-machine’ test effective.</a></td><td>Ludovic Courtès</td></tr>
<tr class='nohover-highlight'><td/><td colspan='3' class='logmsg'>
The test as added in 79ec651a286c71a3d4c72be33a1f80e76a560031 had no
effect: first because ‘guix time-machine --commit=X’, not followed by a
command, does nothing, and second because the “! COMMAND” shell stanza
does not have the desired effect (see &lt;https://issues.guix.gnu.org/62406&gt;).

This change rewrites the test to make it effective.

* tests/guix-time-machine.sh: Rewrite.

Change-Id: Ib44a11331c8625e346139a236cffa699cdbd02f2


</td></tr>