MacPorts' Portfile[1], maybe? Portfile is being evaluated entirely within interp[2] with only few functions exposed inside the environment [1]: https://github.

MacPorts' Portfile[1], maybe? Portfile is being evaluated entirely within interp[2] with only few functions exposed inside the environment [1]: https://github.com/macports/macports-ports/blob/master/lang/lua/Portfile https://github.com/macports/macports-ports/blob/master/lang/... [2]: https://www.tcl.tk/man/tcl8.4/TclCmd/interp.htm https://www.tcl.tk/man/tcl8.4/TclCmd/interp.htm