nix/libstore/builtins.hh

   1 /* GNU Guix --- Functional package management for GNU
   2    Copyright (C) 2016, 2017 Ludovic Courtès <ludo@gnu.org>
   3
   4    This file is part of GNU Guix.
   5
   6    GNU Guix is free software; you can redistribute it and/or modify it
   7    under the terms of the GNU General Public License as published by
   8    the Free Software Foundation; either version 3 of the License, or (at
   9    your option) any later version.
  10
  11    GNU Guix is distributed in the hope that it will be useful, but
  12    WITHOUT ANY WARRANTY; without even the implied warranty of
  13    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  14    GNU General Public License for more details.
  15
  16    You should have received a copy of the GNU General Public License
  17    along with GNU Guix.  If not, see <http://www.gnu.org/licenses/>.  */
  18
  19 /* Interface to built-in derivation builders.  */
  20
  21 #pragma once
  22
  23 #include <derivations.hh>
  24 #include <map>
  25 #include <string>
  26
  27 namespace nix {
  28
  29     inline bool isBuiltin(const Derivation & drv)
  30     {
  31         return string(drv.builder, 0, 8) == "builtin:";
  32     }
  33
  34     /* Build DRV, which lives at DRVPATH.  */
  35     typedef void (*derivationBuilder) (const Derivation &drv,
  36                                        const std::string &drvPath,
  37                                        const std::string &output);
  38
  39     /* Return the built-in builder called BUILDER, or NULL if none was
  40        found.  */
  41     derivationBuilder lookupBuiltinBuilder(const std::string &builder);
  42
  43     /* Return the list of supported built-in builder names.  */
  44     std::list<std::string> builtinBuilderNames();
  45 }