Could not symlink lib/libtcl8.6.dylib Target /usr/local/lib/libtcl8.6.dylib is a symlink belonging to tcl-tk@8. You can unlink it: brew unlink tcl-tk@8 To force the link and overwrite all conflicting files: brew link --overwrite tcl-tk@8 To list all files that would be deleted: brew link --overwrite tcl-tk@8 --dry-run

Process completed with exit code 1.

pkgconf 2.3.0_1 is already installed and up-to-date. To reinstall 2.3.0_1, run: brew reinstall pkgconf

xz 5.6.3 is already installed and up-to-date. To reinstall 5.6.3, run: brew reinstall xz

gdbm 1.24 is already installed and up-to-date. To reinstall 1.24, run: brew reinstall gdbm

tcl-tk@8 8.6.16 is already installed and up-to-date. To reinstall 8.6.16, run: brew reinstall tcl-tk@8