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run: use pname as a fallback for main program

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This commit is contained in:
figsoda 2021-10-27 14:18:30 -04:00
parent 5a160171d0
commit a2473823d7
2 changed files with 7 additions and 3 deletions
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3
src/nix/app.cc
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@ -83,11 +83,14 @@ UnresolvedApp 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 aPname = cursor->maybeGetAttr("pname");
auto aMeta = cursor->maybeGetAttr("meta");
auto aMainProgram = aMeta ? aMeta->maybeGetAttr("mainProgram") : nullptr;
auto mainProgram =
aMainProgram
? aMainProgram->getString()
: aPname
? aPname->getString()
: DrvName(name).name;
auto program = outPath + "/bin/" + mainProgram;
return UnresolvedApp { App {

7
src/nix/run.md
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@ -44,9 +44,10 @@ program specified by the app definition.
If *installable* evaluates to a derivation, it will try to execute the
program `<out>/bin/<name>`, where *out* is the primary output store
path of the derivation and *name* is the `meta.mainProgram` attribute
of the derivation if it exists, and otherwise the name part of the
value of the `name` attribute of the derivation (e.g. if `name` is set
to `hello-1.10`, it will run `$out/bin/hello`).
of the derivation if it exists, and otherwise the `pname` attribute of
the derivation or the name part of the value of the `name` attribute of
the derivation (e.g. if `name` is set to `hello-1.10`, it will run
`$out/bin/hello`).
# Flake output attributes