forked from mirrors/nixpkgs
78 lines
2.3 KiB
Perl
78 lines
2.3 KiB
Perl
#! @perl@/bin/perl -w
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use strict;
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use DBI;
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use DBD::SQLite;
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use String::ShellQuote;
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use Config;
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my $program = $ARGV[0];
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my $dbPath = "@dbPath@";
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my $dbh = DBI->connect("dbi:SQLite:dbname=$dbPath", "", "")
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or die "cannot open database `$dbPath'";
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$dbh->{RaiseError} = 0;
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$dbh->{PrintError} = 0;
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my $system = $ENV{"NIX_SYSTEM"} // $Config{myarchname};
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my $res = $dbh->selectall_arrayref(
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"select package from Programs where system = ? and name = ?",
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{ Slice => {} }, $system, $program);
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my $len = !defined $res ? 0 : scalar @$res;
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if ($len == 0) {
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print STDERR "$program: command not found\n";
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} elsif ($len == 1) {
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my $package = @$res[0]->{package};
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if ($ENV{"NIX_AUTO_RUN"} // "") {
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if ($ENV{"NIX_AUTO_RUN_INTERACTIVE"} // "") {
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while (1) {
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print STDERR "'$program' from package '$package' will be run, confirm? [yn]: ";
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chomp(my $comfirm = <STDIN>);
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if (lc $comfirm eq "n") {
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exit 0;
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} elsif (lc $comfirm eq "y") {
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last;
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}
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}
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}
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exec("nix-shell", "-p", $package, "--run", shell_quote("exec", @ARGV));
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} else {
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print STDERR <<EOF;
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The program '$program' is not in your PATH. You can make it available in an
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ephemeral shell by typing:
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nix-shell -p $package
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EOF
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}
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} else {
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if ($ENV{"NIX_AUTO_RUN"} // "") {
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print STDERR "Select a package that provides '$program':\n";
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for my $i (0 .. $len - 1) {
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print STDERR " [", $i + 1, "]: @$res[$i]->{package}\n";
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}
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my $choice = 0;
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while (1) { # exec will break this loop
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no warnings "numeric";
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print STDERR "Your choice [1-${len}]: ";
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# 0 can be invalid user input like non-number string
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# so we start from 1
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$choice = <STDIN> + 0;
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if (1 <= $choice && $choice <= $len) {
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exec("nix-shell", "-p", @$res[$choice - 1]->{package},
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"--run", shell_quote("exec", @ARGV));
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}
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}
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} else {
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print STDERR <<EOF;
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The program '$program' is not in your PATH. It is provided by several packages.
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You can make it available in an ephemeral shell by typing one of the following:
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EOF
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print STDERR " nix-shell -p $_->{package}\n" foreach @$res;
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}
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}
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exit 127;
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