forked from lix-project/lix
nix-shell: Fix uninitialized value warning
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@ -44,7 +44,7 @@ $SIG{'INT'} = sub { exit 1 };
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# Heuristic to see if we're invoked as a shebang script, namely, if we
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# have a single argument, it's the name of an executable file, and it
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# starts with "#!".
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if ($runEnv && $ARGV[0] !~ /nix-shell/) {
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if ($runEnv && defined $ARGV[0] && $ARGV[0] !~ /nix-shell/) {
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$script = $ARGV[0];
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if (-f $script && -x $script) {
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open SCRIPT, "<$script" or die "$0: cannot open ‘$script’: $!\n";
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