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{ stdenv, importasCommand, execlinebCommand }:
{ name
# the execline script
, execline
# additional arguments to pass to the derivation
, derivationArgs ? {}
}:
# those arguments can’t be overwritten
assert !derivationArgs ? system;
assert !derivationArgs ? name;
assert !derivationArgs ? builder;
assert !derivationArgs ? args;
derivation (derivationArgs // {
inherit (stdenv) system;
inherit name;
# okay, `builtins.toFile` does not accept strings
# that reference drv outputs. This means we need
# to pass the script as envvar;
# this might clash with another passed envar,
# so we give it a long & unique name
_runExeclineScript = execline;
passAsFile = [ "_runExeclineScript" ]
++ derivationArgs.passAsFile or [];
builder = importasCommand;
args = [
"-ui" # drop the envvar afterwards
"script" # substitution name
"_runExeclineScriptPath" # passed script file
execlinebCommand # the actual invocation
"-P" # ignore command line arguments
"-W" # die on syntax error
"$script" # substituted by importas
];
})
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