60 lines
1.1 KiB
Nix
60 lines
1.1 KiB
Nix
{
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stdenv
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, garlicTools
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}:
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{
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units
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}:
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with stdenv.lib;
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with garlicTools;
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let
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unitsString = builtins.concatStringsSep "\n"
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(map (x: "${stageProgram x}") units);
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unitsLinks = builtins.concatStringsSep "\n"
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(map (x: "ln -s ../${baseNameOf x} ${baseNameOf x}") units);
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in
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stdenv.mkDerivation {
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name = "experiment";
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phases = [ "installPhase" ];
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preferLocalBuild = true;
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dontPatchShebangs = true;
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inherit units;
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isExperiment = true;
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installPhase = ''
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cat > $out << EOF
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#!/bin/sh
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if [ -z "\$GARLIC_OUT" ]; then
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>&2 echo "experiment: GARLIC_OUT not defined, aborting"
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exit 1
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fi
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cd "\$GARLIC_OUT"
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export GARLIC_EXPERIMENT=$(basename $out)
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if [ -e "\$GARLIC_EXPERIMENT" ]; then
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>&2 echo "experiment: skipping, directory exists: \$GARLIC_EXPERIMENT"
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exit 0
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fi
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mkdir -p "\$GARLIC_EXPERIMENT"
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cd "\$GARLIC_EXPERIMENT"
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${unitsLinks}
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>&2 echo "experiment: running \$GARLIC_EXPERIMENT"
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# This is an experiment formed by the following units:
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${unitsString}
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EOF
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chmod +x $out
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'';
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}
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