Problem with installing Perl/Tk

[Dave Horsfall]

I'm having trouble installing Perl/Tk (High Sierra 10.13.6 - as far as 
this thing will go); I don't want the CPAN version because it insists on 
installing its own Perl (which hangs on one of the tests anyway).

    dave$ sudo port install p5-tk
    p5-tk is replaced by p5.34-tk
    --->  Computing dependencies for p5.34-tk
    --->  Cleaning p5.34-tk
    --->  Scanning binaries for linking errors
    --->  No broken files found.                             
    --->  No broken ports found.

Quick test:

    dave$ perl -e 'use Tk'
    Can't locate Tk.pm in @INC (you may need to install the tk module) (@INC contains: /opt/local/lib/perl5/site_perl/5.36/darwin-thread-multi-2level /opt/local/lib/perl5/site_perl/5.36 /opt/local/lib/perl5/vendor_perl/5.36/darwin-thread-multi-2level /opt/local/lib/perl5/vendor_perl/5.36 /opt/local/lib/perl5/5.36/darwin-thread-multi-2level /opt/local/lib/perl5/5.36) at -e line 1.
    BEGIN failed--compilation aborted at -e line 1.

Dunno why it couldn't install "tk" itself, but OK...

    dave$ sudo port install tk
    --->  Computing dependencies for tk
    The following dependencies will be installed:  tk-quartz
    Continue? [Y/n]: y
    --->  Fetching archive for tk-quartz
    --->  Attempting to fetch tk-quartz-8.6.16_0.darwin_17.x86_64.tbz2 from http://packages.macports.org/tk-quartz
    --->  Attempting to fetch tk-quartz-8.6.16_0.darwin_17.x86_64.tbz2.rmd160 from http://packages.macports.org/tk-quartz
    --->  Installing tk-quartz @8.6.16_0
    --->  Activating tk-quartz @8.6.16_0
    --->  Cleaning tk-quartz                                 
    --->  Fetching archive for tk
    --->  Attempting to fetch tk-8.6.16_0+quartz.any_any.x86_64.tbz2 from http://packages.macports.org/tk
    --->  Attempting to fetch tk-8.6.16_0+quartz.any_any.x86_64.tbz2.rmd160 from http://packages.macports.org/tk
    --->  Installing tk @8.6.16_0+quartz
    --->  Activating tk @8.6.16_0+quartz
    --->  Cleaning tk
    --->  Updating database of binaries
    --->  Scanning binaries for linking errors
    --->  No broken files found.                             
    --->  No broken ports found.

Test it again:

    dave$ perl -e 'use  Tk'
    Can't locate Tk.pm in @INC (you may need to install the Tk module) (@INC contains: /opt/local/lib/perl5/site_perl/5.36/darwin-thread-multi-2level /opt/local/lib/perl5/site_perl/5.36 /opt/local/lib/perl5/vendor_perl/5.36/darwin-thread-multi-2level /opt/local/lib/perl5/vendor_perl/5.36 /opt/local/lib/perl5/5.36/darwin-thread-multi-2level /opt/local/lib/perl5/5.36) at -e line 1.
    BEGIN failed--compilation aborted at -e line 1.

Where did I stuff up?  One possibility is that line saying "p5-tk is 
replaced by p5.34-tk" when I'm using:

    dave$ perl -v

    This is perl 5, version 36, subversion 3 (v5.36.3) built for darwin-thread-multi-2level

Thanks.

-- Dave