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Fix derivation primop

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This commit is contained in:
Eelco Dolstra 2020-03-02 18:15:06 +01:00
parent cbfbf71e08
commit acd6bddec7
3 changed files with 20 additions and 9 deletions
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14
src/libexpr/eval.cc
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@ -583,14 +583,20 @@ Value * EvalState::addConstant(const string & name, Value & v)
{
Value * v2 = allocValue();
*v2 = v;
staticBaseEnv.vars.emplace_back(symbols.create(name), baseEnvDispl);
baseEnv.values[baseEnvDispl++] = v2;
string name2 = string(name, 0, 2) == "__" ? string(name, 2) : name;
baseEnv.values[0]->attrs->push_back(Attr(symbols.create(name2), v2));
addConstant(name, v2);
return v2;
}
void EvalState::addConstant(const string & name, Value * v)
{
staticBaseEnv.vars.emplace_back(symbols.create(name), baseEnvDispl);
baseEnv.values[baseEnvDispl++] = v;
string name2 = string(name, 0, 2) == "__" ? string(name, 2) : name;
baseEnv.values[0]->attrs->push_back(Attr(symbols.create(name2), v));
}
Value * EvalState::addPrimOp(const string & name,
size_t arity, PrimOpFun primOp)
{

2
src/libexpr/eval.hh
View file

@ -277,6 +277,8 @@ private:
Value * addConstant(const string & name, Value & v);
void addConstant(const string & name, Value * v);
constexpr static size_t maxPrimOpArity = 3;
Value * addPrimOp(const string & name,

13
src/libexpr/primops.cc
View file

@ -3725,18 +3725,21 @@ void EvalState::createBaseEnv()
/* Add a wrapper around the derivation primop that computes the
`drvPath' and `outPath' attributes lazily. */
staticBaseEnv.sort();
sDerivationNix = symbols.create("//builtin/derivation.nix");
eval(parse(
#include "primops/derivation.nix.gen.hh"
, foFile, sDerivationNix, "/", staticBaseEnv), v);
addConstant("derivation", v);
auto vDerivation = allocValue();
addConstant("derivation", vDerivation);
/* Now that we've added all primops, sort the `builtins' set,
because attribute lookups expect it to be sorted. */
baseEnv.values[0]->attrs->sort();
staticBaseEnv.sort();
/* Note: we have to initialize the 'derivation' constant *after*
building baseEnv/staticBaseEnv because it uses 'builtins'. */
eval(parse(
#include "primops/derivation.nix.gen.hh"
, foFile, sDerivationNix, "/", staticBaseEnv), *vDerivation);
}