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{ stdenv, lib, writeScript, coreutils }:
with lib;
let escape = x: if builtins.typeOf x == "string" then escapeShellArg x else x;
in { ppn, mem, walltime, partition ? null, slurmFlags ? null
, salloc ? "/usr/bin/salloc", srun ? "/usr/bin/srun", ... }:
drv:
let ppnReified = if drv.multicore then ppn else 1;
in overrideDerivation drv ({ args, builder, name, ... }: {
builder = stdenv.shell;
args = let
slurm = writeScript "slurm" ''
#!${stdenv.shell}
NIX_BUILD_CORES=${toString ppnReified}
${salloc} -c $NIX_BUILD_CORES --mem=${toString mem}G -t ${walltime} \
-J "${name}" \
${optionalString (partition != null) "-p ${partition}"} \
${optionalString (slurmFlags != null) slurmFlags} \
${srun} ${builder} ${concatMapStringsSep " " escape args}
'';
in [ "-c" slurm ];
})
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