bscpkgs/bsc/garlic/statspy.nix

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2020-09-02 10:44:13 +02:00
{
stdenv
, bash
}:
{
app
, outputDir ? "."
, program ? "bin/run"
}:
stdenv.mkDerivation {
name = "${app.name}-statspy";
preferLocalBuild = true;
phases = [ "installPhase" ];
installPhase = ''
mkdir -p $out/bin
cat > $out/bin/run <<EOF
#!${bash}/bin/bash
mkdir -p ${outputDir}
cat /proc/[0-9]*/stat | sort -n > ${outputDir}/statspy.\$(date +%s.%3N).begin
${app}/${program}
cat /proc/[0-9]*/stat | sort -n > ${outputDir}/statspy.\$(date +%s.%3N).end
EOF
chmod +x $out/bin/run
'';
}