I am trying to write a formula that installs Tix an extended set of widget for Tk. However, Tix during make install wants to modify /usr/local/Cellar/tcl-tk/8.6.9 (it wants to create /usr/local/Cellar/tcl-tk/8.6.9/lib/Tix8.4.3 and write things there) during make install and I get
mkdir: /usr/local/Cellar/tcl-tk/8.6.9/lib/Tix8.4.3: Operation not permitted
however outside a running homebrew process the same operation is quite possible
now I can see that there might be a problem with one formula modifying anothers prefix but I can’t see how I get round it for this library…
any suggestions gratefully received!