forked from mirrors/nixpkgs
53 lines
1.5 KiB
Perl
53 lines
1.5 KiB
Perl
#! @perl@/bin/perl -w @perlFlags@
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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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if (!defined $res || scalar @$res == 0) {
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print STDERR "$program: command not found\n";
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} elsif (scalar @$res == 1) {
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my $package = @$res[0]->{package};
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if ($ENV{"NIX_AUTO_INSTALL"} // "") {
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print STDERR <<EOF;
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The program '$program' is currently not installed. It is provided by
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the package '$package', which I will now install for you.
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EOF
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;
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exit 126 if system("nix-env", "-iA", "nixos.$package") == 0;
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} elsif ($ENV{"NIX_AUTO_RUN"} // "") {
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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 $package
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EOF
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}
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} else {
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print STDERR <<EOF;
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The program '$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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exit 127;
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