56 lines
1.1 KiB
Nix
56 lines
1.1 KiB
Nix
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{
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stdenv
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, bash
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, extrae
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, writeShellScriptBin
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, jq
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}:
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{
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stages
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, conf
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, experimentName ? "run"
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}:
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with stdenv.lib;
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let
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dStages = foldr (stageFn: {conf, prevStage, stages}: {
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conf = conf;
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prevStage = stageFn {stage=prevStage; conf=conf;};
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stages = [ (stageFn {stage=prevStage; conf=conf;}) ] ++ stages;
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})
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{conf=conf; stages=[]; prevStage=null;} stages;
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stageProgram = stage:
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if stage ? programPath
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then "${stage}${stage.programPath}" else "${stage}";
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linkStages = imap1 (i: s: {
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name = "${toString i}-${baseNameOf s.name}";
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path = stageProgram s;
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}) dStages.stages;
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createLinks = builtins.concatStringsSep "\n"
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(map (x: "ln -s ${x.path} $out/bin/${x.name}") linkStages);
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firstStageLink = (x: x.name) (elemAt linkStages 0);
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in
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stdenv.mkDerivation {
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name = "stagen";
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preferLocalBuild = true;
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phases = [ "installPhase" ];
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buildInputs = [ jq ];
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installPhase = ''
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mkdir -p $out/bin
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${createLinks}
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ln -s ${firstStageLink} $out/bin/${experimentName}
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cat > $out/config.raw << EOF
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${builtins.toJSON conf}
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EOF
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jq . $out/config.raw > $out/config.json
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rm $out/config.raw
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'';
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}
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