#pragma once

#include "types.hh"
#include "hash.hh"

#include <map>


namespace nix {


/* Extension of derivations in the Nix store. */
const string drvExtension = ".drv";


/* Abstract syntax of derivations. */

struct DerivationOutput
{
    Path path;
    string hashAlgo; /* hash used for expected hash computation */
    string hash; /* expected hash, may be null */
    DerivationOutput()
    {
    }
    DerivationOutput(Path path, string hashAlgo, string hash)
    {
        this->path = path;
        this->hashAlgo = hashAlgo;
        this->hash = hash;
    }
    void parseHashInfo(bool & recursive, HashType & hashType, Hash & hash) const;
};

typedef std::map<string, DerivationOutput> DerivationOutputs;

/* For inputs that are sub-derivations, we specify exactly which
   output IDs we are interested in. */
typedef std::map<Path, StringSet> DerivationInputs;

typedef std::map<string, string> StringPairs;

struct Derivation
{
    DerivationOutputs outputs; /* keyed on symbolic IDs */
    DerivationInputs inputDrvs; /* inputs that are sub-derivations */
    PathSet inputSrcs; /* inputs that are sources */
    string platform;
    Path builder;
    Strings args;
    StringPairs env;
};


class StoreAPI;


/* Write a derivation to the Nix store, and return its path. */
Path writeDerivation(StoreAPI & store,
    const Derivation & drv, const string & name, bool repair = false);

/* Read a derivation from a file. */
Derivation readDerivation(const Path & drvPath);

/* Print a derivation. */
string unparseDerivation(const Derivation & drv);

/* Check whether a file name ends with the extensions for
   derivations. */
bool isDerivation(const string & fileName);

/* Return true iff this is a fixed-output derivation. */
bool isFixedOutputDrv(const Derivation & drv);

Hash hashDerivationModulo(StoreAPI & store, Derivation drv);

/* Memoisation of hashDerivationModulo(). */
typedef std::map<Path, Hash> DrvHashes;

extern DrvHashes drvHashes;

/* Split a string specifying a derivation and a set of outputs
   (/nix/store/hash-foo!out1,out2,...) into the derivation path and
   the outputs. */
typedef std::pair<string, std::set<string> > DrvPathWithOutputs;
DrvPathWithOutputs parseDrvPathWithOutputs(const string & s);

Path makeDrvPathWithOutputs(const Path & drvPath, const std::set<string> & outputs);

bool wantOutput(const string & output, const std::set<string> & wanted);

PathSet outputPaths(const Derivation & drv);

}
class='list nowrap'><tr class='nohover'><th class='left'>Age</th><th class='left'>Commit message (<a href='/guix/log/gnu/bootloader/grub.scm?id=9f2f60d336f83d88e7811ae79793b96dff163b33&amp;showmsg=1'>Expand</a>)</th><th class='left'>Author</th></tr>
<tr><td><span title='2020-11-17 15:20:03 -0500'>2020-11-17</span></td><td><a href='/guix/commit/gnu/bootloader/grub.scm?id=b0afa3c5f6fc3dc84779be64d03cdff4ab295a33'>bootloader: grub: Skip install-grub-efi when producing a disk image.</a><span class='msg-avail'>...<span class='msg-tooltip'>Fixes &lt;http://issues.guix.gnu.org/44353&gt;.

Every bootloader should try their best to install themselves using only the
MOUNT-POINT and otherwise do nothing.  This requirement comes from the
necessity to call INSTALL-GRUB when installing the (non-EFI) GRUB bootloader,
which needs to populate the root file system with extra modules that cannot be
fit in the core.img file, limited in size to 491520 bytes (by the i386-pc
format required for legacy BIOS compatibility).

As introducing bootloader knowledge at the level of the image code is
undesirable, every bootloader should be adapted to support this fall-back for
their installation procedure (TODO).

* gnu/bootloader/grub.scm (install-grub-efi)[efi-dir]: Skip when the EFI-DIR
argument is set to #f.
</span></span></td><td>Maxim Cournoyer</td></tr>
<tr><td><span title='2020-11-01 01:14:36 +0100'>2020-11-01</span></td><td><a href='/guix/commit/gnu/bootloader/grub.scm?id=f445bc65764ffad2ae9f3b382ddb8feb4eeea2fb'>system: Generate grub locale directory for grub.cfg.</a><span class='msg-avail'>...<span class='msg-tooltip'>* gnu/bootloader/grub.scm (grub-locale-directory): New function.
(grub-configuration-file)[locale-config]: Use grub-locale-directory and
avoid the extra search when eye-candy have performed it.
</span></span></td><td>Miguel Ángel Arruga Vivas</td></tr>
<tr><td><span title='2020-10-30 22:34:03 +0100'>2020-10-30</span></td><td><a href='/guix/commit/gnu/bootloader/grub.scm?id=222a630e9e5aecc740476c64925ef78f961a6b91'>system: Fix dependency for grub.cfg generation.</a><span class='msg-avail'>...<span class='msg-tooltip'>* gnu/bootloader/grub.scm (eye-candy)[font-file]: Use the bootloader
package provided with the configuration.
</span></span></td><td>Miguel Ángel Arruga Vivas</td></tr>
<tr><td><span title='2020-10-30 22:33:58 +0100'>2020-10-30</span></td><td><a href='/guix/commit/gnu/bootloader/grub.scm?id=c69a1c27ee3f1966d1c4b83a87a4f93356a7bb81'>system: Fix grub keymap with store in btrfs subvolume.</a><span class='msg-avail'>...<span class='msg-tooltip'>* gnu/bootloader/grub.scm (grub-configuration-file)
[keyboard-layout-config]: Use normalize-file.
</span></span></td><td>Miguel Ángel Arruga Vivas</td></tr>
<tr><td><span title='2020-10-18 15:33:05 +0200'>2020-10-18</span></td><td><a href='/guix/commit/gnu/bootloader/grub.scm?id=cfe9c7eceb00d6975b8d7ba8286ba03f0a7e64b5'>system: Use locale information in grub.cfg.</a><span class='msg-avail'>...<span class='msg-tooltip'>* gnu/bootloader/grub.scm (define-module): Add new dependency.
(grub-configuration-file): Add locale keyword.
(grub-configuration-file)[locale-config]: New variable with generated
locale configuration when locale parameter has been provided.
[builder]: Add locale-config.
</span></span></td><td>Miguel Ángel Arruga Vivas</td></tr>