···

       
25
       
25
       
 
       
    print STDERR "$program: command not found\n";

     

       
26
       
26
       
 
       
} elsif (scalar @$res == 1) {

     

       
27
       
27
       
 
       
    my $package = @$res[0]->{package};

     

       
28
       
28
       
-
       
    if ($ENV{"NIX_AUTO_INSTALL"} // "") {

     

       
29
       
29
       
-
       
        print STDERR <<EOF;

     

       
30
       
30
       
-
       
The program '$program' is currently not installed. It is provided by

     

       
31
       
31
       
-
       
the package '$package', which I will now install for you.

     

       
32
       
32
       
-
       
EOF

     

       
33
       
33
       
-
       
        ;

     

       
34
       
34
       
-
       
        exit 126 if system("nix-env", "-iA", "nixos.$package") == 0;

     

       
35
       
35
       
-
       
    } elsif ($ENV{"NIX_AUTO_RUN"} // "") {

     

       
28
       
28
       
+
       
    if ($ENV{"NIX_AUTO_RUN"} // "") {

     

       
36
       
29
       
 
       
        exec("nix-shell", "-p", $package, "--run", shell_quote("exec", @ARGV));

     

       
37
       
30
       
 
       
    } else {

     

       
38
       
31
       
 
       
        print STDERR <<EOF;