wroclaw-git-backups/nix
1
0
Fork 0
mirror of https://github.com/NixOS/nix synced 2025-06-28 09:31:16 +02:00
Code Activity

Extract flake dependencies from the 'outputs' arguments

Browse source 
That is, instead of

  inputs = [ "nixpkgs" ];

  outputs = inputs: ... inputs.nixpkgs ...;

you can write

  outputs = { nixpkgs }: ... inputs.nixpkgs ...;
This commit is contained in:
Eelco Dolstra 2019-08-30 11:22:34 +02:00
parent ebc4dae517
commit 89468410d5
3 changed files with 15 additions and 5 deletions
Download patch file Download diff file Expand all files Collapse all files

17
src/libexpr/flake/flake.cc
View file

@ -232,10 +232,10 @@ Flake getFlake(EvalState & state, const FlakeRef & flakeRef)
if (edition) {
flake.edition = state.forceInt(*(**edition).value, *(**edition).pos);
if (flake.edition < 201906)
throw Error("flake '%s' has illegal edition %d", flakeRef, flake.edition);
if (flake.edition > 201906)
if (flake.edition > 201909)
throw Error("flake '%s' requires unsupported edition %d; please upgrade Nix", flakeRef, flake.edition);
if (flake.edition < 201909)
throw Error("flake '%s' has illegal edition %d", flakeRef, flake.edition);
} else
throw Error("flake '%s' lacks attribute 'edition'", flakeRef);
@ -272,6 +272,15 @@ Flake getFlake(EvalState & state, const FlakeRef & flakeRef)
if (auto outputs = vInfo.attrs->get(sOutputs)) {
state.forceFunction(*(**outputs).value, *(**outputs).pos);
flake.vOutputs = (**outputs).value;
if (flake.vOutputs->lambda.fun->matchAttrs) {
for (auto & formal : flake.vOutputs->lambda.fun->formals->formals) {
if (formal.name != state.sSelf) {
flake.inputs.push_back(FlakeRef(formal.name));
}
}
}
} else
throw Error("flake '%s' lacks attribute 'outputs'", flakeRef);
@ -538,7 +547,7 @@ void callFlake(EvalState & state,
auto vOutputs = state.allocAttr(v, state.symbols.create("outputs"));
mkApp(*vOutputs, *flake.vOutputs, v);
v.attrs->push_back(Attr(state.symbols.create("self"), &v));
v.attrs->push_back(Attr(state.sSelf, &v));
v.attrs->sort();