=> Bootstrap dependency digest>=20211023: found digest-20220214
=> Checksum BLAKE2s OK for Tcl-Tk-1.51.tar.gz
=> Checksum SHA512 OK for Tcl-Tk-1.51.tar.gz
===> Installing dependencies for p5-Tcl-Tk-1.51
=> Tool dependency mktools-[0-9]*: found mktools-20220614
=> Tool dependency cwrappers>=20150314: found cwrappers-20220403
=> Build dependency x11-links>=1.36: found x11-links-1.36
=> Full dependency p5-Tcl>=1.51: found p5-Tcl-1.51
=> Full dependency perl>=5.40.0<5.41.0: found perl-5.40.0nb1
=> Full dependency tcl>=8.6.1nb1: found tcl-8.6.16
=> Full dependency tk>=8.6.13nb1: found tk-8.6.16
===> Skipping vulnerability checks.
WARNING: No /usr/pkg/pkgdb/pkg-vulnerabilities file found.
WARNING: To fix run: `/usr/sbin/pkg_admin -K /usr/pkg/pkgdb fetch-pkg-vulnerabilities'.
===> Overriding tools for p5-Tcl-Tk-1.51
===> Extracting for p5-Tcl-Tk-1.51
===> Patching for p5-Tcl-Tk-1.51
===> Creating toolchain wrappers for p5-Tcl-Tk-1.51
===> Configuring for p5-Tcl-Tk-1.51

Your Tcl installation (tclsh) fails to find Tk package.
One of possible reasons is missing file 'pkgIndex.tcl' in ..../tk8.4/
directory; Please check if you can feed 'package require Tk' to tclsh