Usage of perl variant for a perl application

[nortcele]

Hi,

Using informations from ticket:46570 I tried to modify port x11/auto-multiple-choice to use perl variants. I added the lines:

PortGroup               perl5 1.0
...
perl5.require_variant   yes
perl5.conflict_variants yes
perl5.branches          5.16 5.18 5.20
perl5.create_variants   ${perl5.branches}

and changed all "port:p5.16" to "port:p${perl5.major}"

All my tests where done after having "sudo port uninstall installed" before .

If I do

	sudo port install auto-multiple-choice
	auto-multiple-choice

All works fine, the application is built, installed and works.

If I do

	sudo port install perl5
	sudo port install auto-multiple-choice
	auto-multiple-choice

All works fine too, the application is built, installed and works.

But if I do

	sudo port install perl5 +perl5_20
	sudo port install auto-multiple-choice
	auto-multiple-choice

The application is built, installed but when launched I get the error:

Can't locate AMC/Basic.pm in @INC (you may need to install the AMC::Basic module) (@INC contains: /opt/local/lib/perl5/site_perl/5.20/darwin-thread-multi-2level /opt/local/lib/perl5/site_perl/5.20 /opt/local/lib/perl5/vendor_perl/5.20/darwin-thread-multi-2level /opt/local/lib/perl5/vendor_perl/5.20 /opt/local/lib/perl5/5.20/darwin-thread-multi-2level /opt/local/lib/perl5/5.20 .) at /opt/local/lib/AMC/perl/AMC-gui.pl line 45.
BEGIN failed--compilation aborted at /opt/local/lib/AMC/perl/AMC-gui.pl line 45.

I get the same error when I install perl5_18. All auto-multiple-choice files stays at the same places, whatever perl variant is installed. The unreachable file is in "/opt/local/lib/perl5/vendor_perl/AMC/Basic.pm". With the default perl5 install (perl5_16), it seems that @INC contains the path "/opt/local/lib/perl5/vendor_perl' but not with perl5_18 and perl5_20.

Are there other informations I should have added for the application to work with perl5_18 or perl5_20 variants?

[nortcele]

Sorry, I forgot to do some adaptation after my paste.

Using informations from ticket:46570 I tried to modify port x11/auto-multiple-choice to user perl variants. I added the lines:

PortGroup               perl5 1.0
...
perl5.require_variant   yes
perl5.conflict_variants yes
perl5.branches          5.16 5.18 5.20
perl5.create_variants   ${perl5.branches}

and changed all "{{(port:p5.16}}}" to "port:p${perl5.major}"

All my tests where done after having "sudo port uninstall installed" before .

If I do

sudo port install auto-multiple-choice
auto-multiple-choice

All works fine, the application is built, installed and works.

If I do

sudo port install perl5
sudo port install auto-multiple-choice
auto-multiple-choice

All works fine too, the application is built, installed and works.

But if I do

sudo port install perl5 +perl5_20
sudo port install auto-multiple-choice
auto-multiple-choice

The application is built, installed but when launched I get the error:

Can't locate AMC/Basic.pm in @INC (you may need to install the AMC::Basic module) (@INC contains: /opt/local/lib/perl5/site_perl/5.20/darwin-thread-multi-2level /opt/local/lib/perl5/site_perl/5.20 /opt/local/lib/perl5/vendor_perl/5.20/darwin-thread-multi-2level /opt/local/lib/perl5/vendor_perl/5.20 /opt/local/lib/perl5/5.20/darwin-thread-multi-2level /opt/local/lib/perl5/5.20 .) at /opt/local/lib/AMC/perl/AMC-gui.pl line 45.
BEGIN failed--compilation aborted at /opt/local/lib/AMC/perl/AMC-gui.pl line 45.

I get the same error when I install perl5_18. All auto-multiple-choice files stays at the same places, whatever perl variant is installed. The unreachable file is in "/opt/local/lib/perl5/vendor_perl/AMC/Basic.pm". With the default perl5 install (perl5_16), it seems that @INC contains the path "/opt/local/lib/perl5/vendor_perl" but not with perl5_18 and perl5_20.

Are there other informations I should have added for the application to work with perl5_18 or perl5_20 variants?

[nortcele]

When I install PERL with:

sudo port install perl5 +perl5_16

@INC contains:

/opt/local/lib/perl5/site_perl/5.16.3/darwin-thread-multi-2level
/opt/local/lib/perl5/site_perl/5.16.3
/opt/local/lib/perl5/vendor_perl/5.16.3/darwin-thread-multi-2level
/opt/local/lib/perl5/vendor_perl/5.16.3
/opt/local/lib/perl5/5.16.3/darwin-thread-multi-2level
/opt/local/lib/perl5/5.16.3
/opt/local/lib/perl5/site_perl
/opt/local/lib/perl5/vendor_perl

but when I install PERL with:

sudo port install perl5 +perl5_22

@INC contains:

/opt/local/lib/perl5/site_perl/5.22/darwin-thread-multi-2level
/opt/local/lib/perl5/site_perl/5.22
/opt/local/lib/perl5/vendor_perl/5.22/darwin-thread-multi-2level
/opt/local/lib/perl5/vendor_perl/5.22
/opt/local/lib/perl5/5.22/darwin-thread-multi-2level
/opt/local/lib/perl5/5.22

In the last case, as "/opt/local/lib/perl5/vendor_perl" is not in @INC, auto-multiple-choice can't find his files.

[nortcele]

I found the source of the problem. After 5.16, the PERL_VENDORLIB_STEM changed from "/opt/local/lib/perl5/vendor_perl" to "/opt/local/lib/perl5/vendor_perl/5.xx". I'll make a patch to adapt the port.

[Ionic (Mihai Moldovan)]

That's bad. What does the application install? It's obviously also installing a perl module, which should probably be split up as p5-acm-basic (or whatever else there is. ACM::Basic is probably not the only module.)

Afterwards, auto-multiple-choice should depend on p5.xx-acm-basic based on it selected variant and not install any modules by itself (so as not to conflict with p5.xx-acm-basic.)

[nortcele]

The application install it's own modules in a "AMC" folder inside the perl vendor lib folder. How could I get the path for this folder from Macports?

[nortcele]

I found a solution in the perl5-1.0.tcl group file:

perl -V:vendorlib

[nortcele]

This ticket could be close. See ticket #48390.