sci-astronomy/ds9-bin-7.4 fails to start, apparently fails to look for init.tcl in the right (?) directory (lib64 instead of lib): % ds9 application-specific initialization failed: Can't find a usable init.tcl in the following directories: ./zvfsmntpt/tcl8.6 /tmp/linux64/saods9/lib/tcl8.6 /usr/lib/tcl8.6 /lib/tcl8.6 /usr/library /library /tcl8.6.4/library /tcl8.6.4/library This probably means that Tcl wasn't installed properly. Error in startup script: couldn't read file "./zvfsmntpt/library/ds9.tcl": no such file or directory % locate init.tcl /usr/lib64/blt2.5/init.tcl /usr/lib64/tcl8.6/init.tcl % equery l tcl * Searching for tcl ... [IP-] [ ] dev-lang/tcl-8.6.13-r1:0/8.6 % equery l tk * Searching for tk ... [IP-] [ ] dev-lang/tk-8.6.13:0/8.6 Problem persists with tcl & tk 8.6.14.
There is an old bug report of the same problem but concerning the source version of ds9 that used to be available at the time; not sure it is still relevant: https://bugs.gentoo.org/208965
