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#ifndef __DERIVATIONS_H
#define __DERIVATIONS_H
#include "aterm.hh"
#include "store.hh"
/* 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;
}
};
typedef map<string, DerivationOutput> DerivationOutputs;
/* For inputs that are sub-derivations, we specify exactly which
output IDs we are interested in. */
typedef map<Path, StringSet> DerivationInputs;
typedef 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;
};
/* Hash an aterm. */
Hash hashTerm(ATerm t);
/* Write a derivation to the Nix store, and return its path. */
Path writeDerivation(const Derivation & drv, const string & name);
/* Parse a derivation. */
Derivation parseDerivation(ATerm t);
/* Parse a derivation. */
ATerm unparseDerivation(const Derivation & drv);
/* Check whether a file name ends with the extensions for
derivations. */
bool isDerivation(const string & fileName);
#endif /* !__DERIVATIONS_H */
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