copy-tarballs.pl: Fix --expr
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@ -92,7 +92,7 @@ if ($op eq "--file") {
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elsif ($op eq "--expr") {
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elsif ($op eq "--expr") {
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# Evaluate find-tarballs.nix.
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# Evaluate find-tarballs.nix.
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my $expr = $ARGV[1] // die "$0: --expr requires a Nix expression\n";
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my $expr = $ARGV[0] // die "$0: --expr requires a Nix expression\n";
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my $pid = open(JSON, "-|", "nix-instantiate", "--eval-only", "--json", "--strict",
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my $pid = open(JSON, "-|", "nix-instantiate", "--eval-only", "--json", "--strict",
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"<nixpkgs/maintainers/scripts/find-tarballs.nix>",
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"<nixpkgs/maintainers/scripts/find-tarballs.nix>",
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"--arg", "expr", $expr);
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"--arg", "expr", $expr);
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