perl -I is not inherited through exec(). You're better off using:
PERL5LIB=$PWD/perl5/lib/perl5 $PWD/perl5/bin/hypnotoad
This way, PERL5LIB is set for the current process and all the sub processes
started with exec(). Note the $PWD part, which will make sure it's set to
an absolute path.
On Saturday, October 18, 2014 6:01:15 AM UTC+2, perlpong wrote:
>
> This is not a bug-report or a request for help, I am just sharing my
> experience.
>
> I install Mojolicious inside an app-local directory using cpanm's "-L"
> switch:
>
> .
> |─- perl5/
> | |-- bin/
> | | |-- hypnotoad
> | | |-- mojo
> | | |-- morbo
> | |-- lib/
> | |-- perl5/
> | |-- Mojo/
> | |-- Mojo.pm
> | |-- Mojolicious/
> | |-- Mojolicious.pm
> |-- script/
> |-- app.pl
>
> I run hypnotoad with Perl's "-I" flag to append my local-lib directory to
> the beginning of @INC:
>
> perl -Iperl5/lib/perl5 perl5/bin/hypnotoad ./script/myapp.pl
>
> My app logs an error related to Mojolicious:
>
> Can't locate object method "every_param" via package "Mojo::Parameters"
>
> After investigating I realise that my "global" install of Mojolicious is
> being loaded instead of my local one.
>
> If I dump @INC at the beginning of the hypnotoad script, it produces this:
>
> (
> "/home/ac/apps/MyApp/perl5/bin/../lib",
> "perl5/lib/perl5/i686-linux",
> "perl5/lib/perl5",
>
> "/home/ac/perl5/perlbrew/perls/perl-5.16.1/lib/site_perl/5.16.1/i686-linux",
> "/home/ac/perl5/perlbrew/perls/perl-5.16.1/lib/site_perl/5.16.1",
> "/home/ac/perl5/perlbrew/perls/perl-5.16.1/lib/5.16.1/i686-linux",
> "/home/ac/perl5/perlbrew/perls/perl-5.16.1/lib/5.16.1",
> ".",
> )
> (
> "/home/ac/apps/MyApp/perl5/bin/../lib",
>
> "/home/ac/perl5/perlbrew/perls/perl-5.16.1/lib/site_perl/5.16.1/i686-linux",
> "/home/ac/perl5/perlbrew/perls/perl-5.16.1/lib/site_perl/5.16.1",
> "/home/ac/perl5/perlbrew/perls/perl-5.16.1/lib/5.16.1/i686-linux",
> "/home/ac/perl5/perlbrew/perls/perl-5.16.1/lib/5.16.1",
> ".",
> )
>
> It appears that the process restarts itself, the second time without my
> modified @INC.
>
> Looking inside Mojo::Server::Hypnotoad, I notice this:
>
> $ENV{HYPNOTOAD_EXE} ||= $0;
> ...
> # Clean start (to make sure everything works)
> die "Can't exec: $!" if !$ENV{HYPNOTOAD_REV}++ && !exec
> $ENV{HYPNOTOAD_EXE};
>
> So my workaround is to manually set the HYPNOTOAD_EXE environment variable:
>
> export HYPNOTOAD_EXE="perl -Iperl5/lib/perl5 perl5/bin/hypnotoad"
> perl -Iperl5/lib/perl5 perl5/bin/hypnotoad ./script/myapp.pl
>
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