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nix run: Allow program name to be set in meta.mainProgram

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This is useful when the program name doesn't match the package name
(e.g. ripgrep vs rg).

Fixes #4498.
This commit is contained in:
Eelco Dolstra 2021-02-17 17:54:13 +01:00
parent 13897afbe6
commit 7bd9898d5c
1 changed files with 16 additions and 3 deletions
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19
src/nix/app.cc
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@ -12,11 +12,16 @@ App Installable::toApp(EvalState & state)
auto type = cursor->getAttr("type")->getString();
auto checkProgram = [&](const Path & program)
{
if (!state.store->isInStore(program))
throw Error("app program '%s' is not in the Nix store", program);
};
if (type == "app") {
auto [program, context] = cursor->getAttr("program")->getStringWithContext();
if (!state.store->isInStore(program))
throw Error("app program '%s' is not in the Nix store", program);
checkProgram(program);
std::vector<StorePathWithOutputs> context2;
for (auto & [path, name] : context)
@ -33,9 +38,17 @@ App Installable::toApp(EvalState & state)
auto outPath = cursor->getAttr(state.sOutPath)->getString();
auto outputName = cursor->getAttr(state.sOutputName)->getString();
auto name = cursor->getAttr(state.sName)->getString();
auto aMeta = cursor->maybeGetAttr("meta");
auto aMainProgram = aMeta ? aMeta->maybeGetAttr("mainProgram") : nullptr;
auto mainProgram =
aMainProgram
? aMainProgram->getString()
: DrvName(name).name;
auto program = outPath + "/bin/" + mainProgram;
checkProgram(program);
return App {
.context = { { drvPath, {outputName} } },
.program = outPath + "/bin/" + DrvName(name).name,
.program = program,
};
}