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#include "installable-derived-path.hh"
#include "derivations.hh"
namespace nix {
std::string InstallableDerivedPath::what() const
{
return derivedPath.to_string(*store);
}
DerivedPathsWithInfo InstallableDerivedPath::toDerivedPaths()
{
return {{.path = derivedPath, .info = {} }};
}
std::optional<StorePath> InstallableDerivedPath::getStorePath()
{
return std::visit(overloaded {
[&](const DerivedPath::Built & bfd) {
return bfd.drvPath;
},
[&](const DerivedPath::Opaque & bo) {
return bo.path;
},
}, derivedPath.raw());
}
InstallableDerivedPath InstallableDerivedPath::parse(
ref<Store> store,
std::string_view prefix,
ExtendedOutputsSpec extendedOutputsSpec)
{
auto derivedPath = std::visit(overloaded {
// If the user did not use ^, we treat the output more liberally.
[&](const ExtendedOutputsSpec::Default &) -> DerivedPath {
// First, we accept a symlink chain or an actual store path.
auto storePath = store->followLinksToStorePath(prefix);
// Second, we see if the store path ends in `.drv` to decide what sort
// of derived path they want.
//
// This handling predates the `^` syntax. The `^*` in
// `/nix/store/hash-foo.drv^*` unambiguously means "do the
// `DerivedPath::Built` case", so plain `/nix/store/hash-foo.drv` could
// also unambiguously mean "do the DerivedPath::Opaque` case".
//
// Issue #7261 tracks reconsidering this `.drv` dispatching.
return storePath.isDerivation()
? (DerivedPath) DerivedPath::Built {
.drvPath = std::move(storePath),
.outputs = OutputsSpec::All {},
}
: (DerivedPath) DerivedPath::Opaque {
.path = std::move(storePath),
};
},
// If the user did use ^, we just do exactly what is written.
[&](const ExtendedOutputsSpec::Explicit & outputSpec) -> DerivedPath {
return DerivedPath::Built {
.drvPath = store->parseStorePath(prefix),
.outputs = outputSpec,
};
},
}, extendedOutputsSpec.raw());
return InstallableDerivedPath {
store,
std::move(derivedPath),
};
}
}
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