/* GNU Guix --- Functional package management for GNU
   Copyright (C) 2016-2019, 2023 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 },
    { "git-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;
}

}
left'>Age</th><th class='left'>Commit message (<a href='/guix/log/gnu/packages/license.scm?id=dfa9cea3505b8b6a72a9cf2bdbbabef300ee5d5e&amp;showmsg=1'>Expand</a>)</th><th class='left'>Author</th></tr>
<tr><td><span title='2021-02-28 11:13:01 +0100'>2021-02-28</span></td><td><a href='/guix/commit/gnu/packages/license.scm?id=c4178e1a78b32243291855c71af649c7e2a74d60'>gnu: licenseheaders: Use HTTPS home page URI.</a><span class='msg-avail'>...<span class='msg-tooltip'>* gnu/packages/license.scm (licenseheaders)[home-page]: Use HTTPS URI.
</span></span></td><td>Nicolas Goaziou</td></tr>
<tr><td><span title='2021-01-31 17:00:29 +0100'>2021-01-31</span></td><td><a href='/guix/commit/gnu/packages/license.scm?id=232a10f006b95bf3950fb6c4a9ddc0dc6be75db7'>gnu: Add licenseheaders.</a><span class='msg-avail'>...<span class='msg-tooltip'>* gnu/packages/license.scm (licenseheaders): New variable.

Signed-off-by: Nicolas Goaziou &lt;mail@nicolasgoaziou.fr&gt;
</span></span></td><td>Tanguy Le Carrour</td></tr>
<tr><td><span title='2021-01-12 09:51:07 +0100'>2021-01-12</span></td><td><a href='/guix/commit/gnu/packages/license.scm?id=38d2435fbe2057bc63991c13ca6d9dfd16202383'>gnu: reuse: Update to 0.12.1.</a><span class='msg-avail'>...<span class='msg-tooltip'>* gnu/packages/license.scm (reuse): Update to 0.12.1.

Signed-off-by: Nicolas Goaziou &lt;mail@nicolasgoaziou.fr&gt;
</span></span></td><td>Michael Rohleder</td></tr>
<tr><td><span title='2020-08-29 14:53:15 -0400'>2020-08-29</span></td><td><a href='/guix/commit/gnu/packages/license.scm?id=a046c03e139af4dcbe4cab3841fc7377f1152295'>gnu: reuse: Update to 0.11.1.</a><span class='msg-avail'>...<span class='msg-tooltip'>* gnu/packages/license.scm (reuse): Update to 0.11.1.
[native-inputs]: added python-setuptools-scm.

Signed-off-by: Leo Famulari &lt;leo@famulari.name&gt;
</span></span></td><td>Michael Rohleder</td></tr>