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Get rid of basicDerivation::findOutput

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It's a tiny function which is:

 - hardly worth abstrating over, and also only used once.

 - doesn't work once we get CA drvs

I rewrote the one callsite to be forwards compatable with CA
derivations, and also potentially more performant: instead of reading in
the derivation it can ust consult the SQLite DB in the common case.
This commit is contained in:
John Ericson 2020-07-23 14:34:20 +00:00
parent 4bfba1305e
commit 2274f63453
3 changed files with 2 additions and 13 deletions
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8
src/libstore/derivations.cc
View file

@ -7,14 +7,6 @@
namespace nix {
const StorePath & BasicDerivation::findOutput(const string & id) const
{
auto i = outputs.find(id);
if (i == outputs.end())
throw Error("derivation has no output '%s'", id);
return i->second.path;
}
bool BasicDerivation::isBuiltin() const
{

4
src/libstore/derivations.hh
View file

@ -39,10 +39,6 @@ struct BasicDerivation
BasicDerivation() { }
virtual ~BasicDerivation() { };
/* Return the path corresponding to the output identifier `id' in
the given derivation. */
const StorePath & findOutput(const std::string & id) const;
bool isBuiltin() const;
/* Return true iff this is a fixed-output derivation. */

3
src/nix-env/nix-env.cc
View file

@ -381,7 +381,8 @@ static void queryInstSources(EvalState & state,
if (path.isDerivation()) {
elem.setDrvPath(state.store->printStorePath(path));
elem.setOutPath(state.store->printStorePath(state.store->derivationFromPath(path).findOutput("out")));
auto outputs = state.store->queryDerivationOutputMap(path);
elem.setOutPath(state.store->printStorePath(outputs.at("out")));
if (name.size() >= drvExtension.size() &&
string(name, name.size() - drvExtension.size()) == drvExtension)
name = string(name, 0, name.size() - drvExtension.size());