#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);

}
itle='2024-06-03 00:27:11 +0200'>2024-06-03</span></td><td><a href='/guix/commit/configure.ac?id=f65bd477b0c7f58004a810cc9ba5f29bc231ee35'>build: Use the po4a command for the translation generation.</a><span class='msg-avail'>...</span></td><td>gemmaro</td></tr>
<tr><td><span title='2024-06-03 00:27:11 +0200'>2024-06-03</span></td><td><a href='/guix/commit/configure.ac?id=2d4af5247057505956e841d396ec78af9f769837'>build: Update the POT creation task with the po4a command.</a><span class='msg-avail'>...</span></td><td>gemmaro</td></tr>
<tr><td><span title='2024-05-25 23:28:30 -0400'>2024-05-25</span></td><td><a href='/guix/commit/configure.ac?id=77771036f0970083c146b709d792d128f4235125'>configure.ac: Set default value for the 'prefix' variable.</a><span class='msg-avail'>...</span></td><td>Maxim Cournoyer</td></tr>
<tr><td><span title='2024-04-19 16:45:38 +0200'>2024-04-19</span></td><td><a href='/guix/commit/configure.ac?id=bb089f76227666e11e6949038c4fd9e130e047a3'>maint: Resurrect running `make' from a tarball.</a><span class='msg-avail'>...</span></td><td>Janneke Nieuwenhuizen</td></tr>
<tr><td><span title='2023-10-22 20:35:15 -0400'>2023-10-22</span></td><td><a href='/guix/commit/configure.ac?id=4cf4dcb8b31274a8dfba6bae3a6826a1b521da3f'>teams: Adjust shebang to use 'guix repl'.</a><span class='msg-avail'>...</span></td><td>Maxim Cournoyer</td></tr>
<tr><td><span title='2023-09-26 17:36:58 +0200'>2023-09-26</span></td><td><a href='/guix/commit/configure.ac?id=f651a359691cbe4750f1fe8d14dd964f7971f916'>build: Add dependency on Git.</a><span class='msg-avail'>...</span></td><td>Ludovic Courtès</td></tr>
<tr><td><span title='2022-07-03 14:12:32 +0200'>2022-07-03</span></td><td><a href='/guix/commit/configure.ac?id=4eaf90470f466b3fdab87f6961cb18bb348d433f'>etc: Add teams.scm.</a><span class='msg-avail'>...</span></td><td>Ricardo Wurmus</td></tr>