#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);

}
'><th class='left'>Age</th><th class='left'>Commit message (<a href='/guix/log/gnu/packages/ci.scm?id=6aec7e2ec14dc86890c1e7ad142899a83736e10a&amp;showmsg=1'>Expand</a>)</th><th class='left'>Author</th></tr>
<tr><td><span title='2020-06-02 18:55:54 +0200'>2020-06-02</span></td><td><a href='/guix/commit/gnu/packages/ci.scm?id=8f7cf3b50cda98afab1bef89bef2d6c01aa2b626'>gnu: guix, guix-jupyter, cuirass, hpcguix-web: Use Guile-JSON 4.0.</a><span class='msg-avail'>...</span></td><td>Ludovic Courtès</td></tr>
<tr><td><span title='2020-05-12 14:24:04 +0200'>2020-05-12</span></td><td><a href='/guix/commit/gnu/packages/ci.scm?id=09db2343f6c8976f0537ccb2138f4f664efc4212'>gnu: cuirass: Update to 0.0.1-30.9559fd1.</a><span class='msg-avail'>...</span></td><td>Ricardo Wurmus</td></tr>
<tr><td><span title='2020-04-19 16:53:01 +0200'>2020-04-19</span></td><td><a href='/guix/commit/gnu/packages/ci.scm?id=7abe35febe4234609e14e169b6fcc0cbaf4c7119'>Merge branch 'master' into core-updates</a></td><td>Marius Bakke</td></tr>
<tr><td><span title='2020-04-15 20:02:55 +0200'>2020-04-15</span></td><td><a href='/guix/commit/gnu/packages/ci.scm?id=8f0b41c8bf606fd269970d153ae687e5f36603df'>gnu: cuirass: Update to 0.0.1-29.27af1d3.</a><span class='msg-avail'>...</span></td><td>Ricardo Wurmus</td></tr>
<tr><td><span title='2020-03-16 15:44:02 +0100'>2020-03-16</span></td><td><a href='/guix/commit/gnu/packages/ci.scm?id=b6bee63bed4f013064c0d902e7c8b83ed7514ade'>gnu: Default to Guile 3.0.</a><span class='msg-avail'>...</span></td><td>Ludovic Courtès</td></tr>
<tr><td><span title='2020-01-25 23:53:25 +0000'>2020-01-25</span></td><td><a href='/guix/commit/gnu/packages/ci.scm?id=7de4ea828c79020df0332a59f54b6b5ed5d6a757'>gnu: cuirass: Update to 0.0.1-28.b9031db.</a><span class='msg-avail'>...</span></td><td>Christopher Baines</td></tr>
<tr><td><span title='2020-01-16 08:42:59 +0000'>2020-01-16</span></td><td><a href='/guix/commit/gnu/packages/ci.scm?id=ba07842c349444743c8fb19f08a42e5e6aa71035'>gnu: cuirass: Update to 0.0.1-27.46f73b6.</a><span class='msg-avail'>...</span></td><td>Christopher Baines</td></tr>
<tr><td><span title='2020-01-01 19:56:11 +0100'>2020-01-01</span></td><td><a href='/guix/commit/gnu/packages/ci.scm?id=b94cf161d066b0fc1f3830ac38fbc98597a1f922'>Revert "gnu: Add gitlab-runner."</a><span class='msg-avail'>...</span></td><td>Mathieu Othacehe</td></tr>
<tr><td><span title='2019-12-31 17:06:59 +0100'>2019-12-31</span></td><td><a href='/guix/commit/gnu/packages/ci.scm?id=365892e90fe352e5a366e48e9661c8c06bf80baa'>gnu: Add gitlab-runner.</a><span class='msg-avail'>...</span></td><td>Reza Alizadeh Majd</td></tr>
<tr><td><span title='2019-10-30 13:32:24 +0100'>2019-10-30</span></td><td><a href='/guix/commit/gnu/packages/ci.scm?id=8cdfaef1185fa5dc5dbd21cc3592e77283b08752'>gnu: cuirass: Update to 0.0.1-26.e20ff86.</a><span class='msg-avail'>...</span></td><td>Ricardo Wurmus</td></tr>
<tr><td><span title='2019-10-23 21:48:51 +0200'>2019-10-23</span></td><td><a href='/guix/commit/gnu/packages/ci.scm?id=134a2c4ad8e58035876131eb3946bc137fe32d54'>gnu: cuirass: Pass "--localstatedir=/var".</a><span class='msg-avail'>...</span></td><td>Ludovic Courtès</td></tr>
<tr><td><span title='2019-10-23 16:43:54 +0200'>2019-10-23</span></td><td><a href='/guix/commit/gnu/packages/ci.scm?id=3da6bd5f2c0aaf215a3c357b837968e6344b3a26'>gnu: cuirass: Update to 80b6e89.</a><span class='msg-avail'>...</span></td><td>Ludovic Courtès</td></tr>
<tr><td><span title='2019-09-23 23:41:19 +0200'>2019-09-23</span></td><td><a href='/guix/commit/gnu/packages/ci.scm?id=46a9d88512a706f310e91370b6313085da040d2d'>gnu: cuirass: Update to d27ff21.</a><span class='msg-avail'>...</span></td><td>Ludovic Courtès</td></tr>