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command-not-found: make NIX_AUTO_RUN work when multiple choices

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Zenithal 2022-01-16 07:22:33 +08:00
parent 751d92acb4
commit d046fcf4b1
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GPG key ID: 1189C659F3D04C1C
1 changed files with 25 additions and 4 deletions
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29
nixos/modules/programs/command-not-found/command-not-found.pl
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@ -21,9 +21,11 @@ my $res = $dbh->selectall_arrayref(
"select package from Programs where system = ? and name = ?",
{ Slice => {} }, $system, $program);
if (!defined $res || scalar @$res == 0) {
my $len = !defined $res ? 0 : scalar @$res;
if ($len == 0) {
print STDERR "$program: command not found\n";
} elsif (scalar @$res == 1) {
} elsif ($len == 1) {
my $package = @$res[0]->{package};
if ($ENV{"NIX_AUTO_RUN"} // "") {
exec("nix-shell", "-p", $package, "--run", shell_quote("exec", @ARGV));
@ -35,11 +37,30 @@ ephemeral shell by typing:
EOF
}
} else {
print STDERR <<EOF;
if ($ENV{"NIX_AUTO_RUN"} // "") {
print STDERR "Select a package that provides '$program':\n";
for my $i (0 .. $len - 1) {
print STDERR " [", $i + 1, "]: @$res[$i]->{package}\n";
}
my $choice = 0;
while (1) { # exec will break this loop
no warnings "numeric";
print STDERR "Your choice [1-${len}]: ";
# 0 can be invalid user input like non-number string
# so we start from 1
$choice = <STDIN> + 0;
if (1 <= $choice && $choice <= $len) {
exec("nix-shell", "-p", @$res[$choice - 1]->{package},
"--run", shell_quote("exec", @ARGV));
}
}
} else {
print STDERR <<EOF;
The program '$program' is not in your PATH. It is provided by several packages.
You can make it available in an ephemeral shell by typing one of the following:
EOF
print STDERR " nix-shell -p $_->{package}\n" foreach @$res;
print STDERR " nix-shell -p $_->{package}\n" foreach @$res;
}
}
exit 127;