# Security checking of filenames.
my $pathCompRE = "(?:[A-Za-z0-9-\+][A-Za-z0-9-\+\._]*)";
my $relPathRE = "(?:$pathCompRE(?:\/$pathCompRE)*)";

        die "Invalid Nix expression path: $nixExprPath" if $nixExprPath !~ /^$Build::relPathRE$/;

        die "Invalid Nix expression path: $nixExprPath" if $nixExprPath !~ /^$relPathRE$/;

use Readonly;

our @EXPORT = qw(getBuild error notFound);

our @EXPORT = qw(
    getBuild error notFound
    $pathCompRE $relPathRE
);

# Security checking of filenames.
Readonly::Scalar our $pathCompRE => "(?:[A-Za-z0-9-\+][A-Za-z0-9-\+\._]*)";
Readonly::Scalar our $relPathRE  => "(?:$pathCompRE(?:\/$pathCompRE)*)";