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Merge remote-tracking branch 'origin/master' into flakes

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This commit is contained in:
Eelco Dolstra 2019-03-26 11:44:14 +01:00
commit b5565a7081
36 changed files with 470 additions and 180 deletions
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63
src/libexpr/primops.cc
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@ -315,6 +315,12 @@ static void prim_isBool(EvalState & state, const Pos & pos, Value * * args, Valu
mkBool(v, args[0]->type == tBool);
}
/* Determine whether the argument is a path. */
static void prim_isPath(EvalState & state, const Pos & pos, Value * * args, Value & v)
{
state.forceValue(*args[0]);
mkBool(v, args[0]->type == tPath);
}
struct CompareValues
{
@ -687,21 +693,12 @@ static void prim_derivationStrict(EvalState & state, const Pos & pos, Value * *
}
}
/* See prim_unsafeDiscardOutputDependency. */
else if (path.at(0) == '~')
drv.inputSrcs.insert(string(path, 1));
/* Handle derivation outputs of the form ‘!<name>!<path>’. */
else if (path.at(0) == '!') {
std::pair<string, string> ctx = decodeContext(path);
drv.inputDrvs[ctx.first].insert(ctx.second);
}
/* Handle derivation contexts returned by
‘builtins.storePath’. */
else if (isDerivation(path))
drv.inputDrvs[path] = state.store->queryDerivationOutputNames(path);
/* Otherwise it's a source file. */
else
drv.inputSrcs.insert(path);
@ -1004,13 +1001,8 @@ static void prim_toFile(EvalState & state, const Pos & pos, Value * * args, Valu
PathSet refs;
for (auto path : context) {
if (path.at(0) == '=') path = string(path, 1);
if (isDerivation(path)) {
/* See prim_unsafeDiscardOutputDependency. */
if (path.at(0) != '~')
throw EvalError(format("in 'toFile': the file '%1%' cannot refer to derivation outputs, at %2%") % name % pos);
path = string(path, 1);
}
if (path.at(0) != '/')
throw EvalError(format("in 'toFile': the file '%1%' cannot refer to derivation outputs, at %2%") % name % pos);
refs.insert(path);
}
@ -1794,41 +1786,6 @@ static void prim_stringLength(EvalState & state, const Pos & pos, Value * * args
}
static void prim_unsafeDiscardStringContext(EvalState & state, const Pos & pos, Value * * args, Value & v)
{
PathSet context;
string s = state.coerceToString(pos, *args[0], context);
mkString(v, s, PathSet());
}
static void prim_hasContext(EvalState & state, const Pos & pos, Value * * args, Value & v)
{
PathSet context;
state.forceString(*args[0], context, pos);
mkBool(v, !context.empty());
}
/* Sometimes we want to pass a derivation path (i.e. pkg.drvPath) to a
builder without causing the derivation to be built (for instance,
in the derivation that builds NARs in nix-push, when doing
source-only deployment). This primop marks the string context so
that builtins.derivation adds the path to drv.inputSrcs rather than
drv.inputDrvs. */
static void prim_unsafeDiscardOutputDependency(EvalState & state, const Pos & pos, Value * * args, Value & v)
{
PathSet context;
string s = state.coerceToString(pos, *args[0], context);
PathSet context2;
for (auto & p : context)
context2.insert(p.at(0) == '=' ? "~" + string(p, 1) : p);
mkString(v, s, context2);
}
/* Return the cryptographic hash of a string in base-16. */
static void prim_hashString(EvalState & state, const Pos & pos, Value * * args, Value & v)
{
@ -2218,6 +2175,7 @@ void EvalState::createBaseEnv()
addPrimOp("__isInt", 1, prim_isInt);
addPrimOp("__isFloat", 1, prim_isFloat);
addPrimOp("__isBool", 1, prim_isBool);
addPrimOp("__isPath", 1, prim_isPath);
addPrimOp("__genericClosure", 1, prim_genericClosure);
addPrimOp("abort", 1, prim_abort);
addPrimOp("__addErrorContext", 2, prim_addErrorContext);
@ -2299,9 +2257,6 @@ void EvalState::createBaseEnv()
addPrimOp("toString", 1, prim_toString);
addPrimOp("__substring", 3, prim_substring);
addPrimOp("__stringLength", 1, prim_stringLength);
addPrimOp("__hasContext", 1, prim_hasContext);
addPrimOp("__unsafeDiscardStringContext", 1, prim_unsafeDiscardStringContext);
addPrimOp("__unsafeDiscardOutputDependency", 1, prim_unsafeDiscardOutputDependency);
addPrimOp("__hashString", 2, prim_hashString);
addPrimOp("__match", 2, prim_match);
addPrimOp("__split", 2, prim_split);