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Add "nix search" command

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This commit is contained in:
Eelco Dolstra 2017-07-17 19:02:56 +02:00
parent 3162ad5ff4
commit 90825dea51
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GPG key ID: 8170B4726D7198DE
9 changed files with 263 additions and 102 deletions
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44
src/libexpr/get-drvs.cc
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@ -9,7 +9,34 @@
namespace nix {
string DrvInfo::queryDrvPath()
DrvInfo::DrvInfo(EvalState & state, const string & attrPath, Bindings * attrs)
: state(&state), attrs(attrs), attrPath(attrPath)
{
}
string DrvInfo::queryName() const
{
if (name == "" && attrs) {
auto i = attrs->find(state->sName);
if (i == attrs->end()) throw TypeError("derivation name missing");
name = state->forceStringNoCtx(*i->value);
}
return name;
}
string DrvInfo::querySystem() const
{
if (system == "" && attrs) {
auto i = attrs->find(state->sSystem);
system = i == attrs->end() ? "unknown" : state->forceStringNoCtx(*i->value, *i->pos);
}
return system;
}
string DrvInfo::queryDrvPath() const
{
if (drvPath == "" && attrs) {
Bindings::iterator i = attrs->find(state->sDrvPath);
@ -20,7 +47,7 @@ string DrvInfo::queryDrvPath()
}
string DrvInfo::queryOutPath()
string DrvInfo::queryOutPath() const
{
if (outPath == "" && attrs) {
Bindings::iterator i = attrs->find(state->sOutPath);
@ -76,7 +103,7 @@ DrvInfo::Outputs DrvInfo::queryOutputs(bool onlyOutputsToInstall)
}
string DrvInfo::queryOutputName()
string DrvInfo::queryOutputName() const
{
if (outputName == "" && attrs) {
Bindings::iterator i = attrs->find(state->sOutputName);
@ -225,17 +252,12 @@ static bool getDerivation(EvalState & state, Value & v,
if (done.find(v.attrs) != done.end()) return false;
done.insert(v.attrs);
Bindings::iterator i = v.attrs->find(state.sName);
/* !!! We really would like to have a decent back trace here. */
if (i == v.attrs->end()) throw TypeError("derivation name missing");
DrvInfo drv(state, attrPath, v.attrs);
Bindings::iterator i2 = v.attrs->find(state.sSystem);
DrvInfo drv(state, state.forceStringNoCtx(*i->value), attrPath,
i2 == v.attrs->end() ? "unknown" : state.forceStringNoCtx(*i2->value, *i2->pos),
v.attrs);
drv.queryName();
drvs.push_back(drv);
return false;
} catch (AssertionError & e) {