#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);

}
/tr>
<tr><td><span title='2021-08-12 00:30:27 +0200'>2021-08-12</span></td><td><a href='/guix/commit/.dir-locals.el?id=c4133c43c7cfe2476ebfae87f9e4d10d96de9bc7'>Merge branch 'master' into core-updates-frozen</a><span class='msg-avail'>...<span class='msg-tooltip'> Conflicts:
	gnu/packages/algebra.scm
	gnu/packages/games.scm
	gnu/packages/golang.scm
	gnu/packages/kerberos.scm
	gnu/packages/mail.scm
	gnu/packages/python.scm
	gnu/packages/ruby.scm
	gnu/packages/scheme.scm
	gnu/packages/tex.scm
	gnu/packages/tls.scm
	gnu/packages/version-control.scm
</span></span></td><td>Marius Bakke</td></tr>
<tr><td><span title='2021-08-02 14:16:22 -0400'>2021-08-02</span></td><td><a href='/guix/commit/.dir-locals.el?id=6b9bebbb3d4210f2efe8e40bc83bcf60ec673512'>.dir-locals.el: Specify indentation rule for with-shepherd-action.</a><span class='msg-avail'>...<span class='msg-tooltip'>* .dir-locals.el (scheme-mode) &lt;with-shepherd-action&gt;: New indentation rule.
</span></span></td><td>Maxim Cournoyer</td></tr>
<tr><td><span title='2021-07-18 19:50:01 +0200'>2021-07-18</span></td><td><a href='/guix/commit/.dir-locals.el?id=0e47fcced442d8e7c1b05184fdc1c14f10ed04ec'>Merge branch 'master' into core-updates</a></td><td>Ludovic Courtès</td></tr>
<tr><td><span title='2021-07-11 00:49:14 +0200'>2021-07-11</span></td><td><a href='/guix/commit/.dir-locals.el?id=04b2f3dd80aa4a138e93a6a4a209c1beac5fca88'>packages: Add 'modify-inputs'.</a><span class='msg-avail'>...<span class='msg-tooltip'>* guix/packages.scm (inputs-sans-labels, replace-input): New procedures.
(prepend, replace, modify-inputs): New macros.
* doc/guix.texi (Defining Package Variants): Document 'modify-inputs'.
* dir-locals.el: Add 'modify-inputs' and its keywords.
</span></span></td><td>Ludovic Courtès</td></tr>
<tr><td><span title='2021-06-29 14:53:21 -0400'>2021-06-29</span></td><td><a href='/guix/commit/.dir-locals.el?id=82daab42811a2e3c7684ebdf12af75ff0fa67b99'>pack: Add support for the deb format.</a><span class='msg-avail'>...<span class='msg-tooltip'>* .dir-locals.el (scheme-mode)[gexp-&gt;derivation]: Define indentation rule.
* guix/scripts/pack.scm (debian-archive): New procedure.
(%formats): Register the new deb format.
(show-formats): Add it to the usage string.
* tests/pack.scm (%ar-bootstrap): New variable.
(deb archive with symlinks): New test.
* doc/guix.texi (Invoking guix pack): Document it.
* NEWS: Add news entry.
</span></span></td><td>Maxim Cournoyer</td></tr>