Aside from these libtool files we can now say, that this ddc project succeeded.
I've contacted the libtool developers if we can extend the wrapper approach to the .la files.
It seems, that in some older version of libtool those were just sourced as shell script, but
I don't know if now they do something more fancy with it or not...
Anyways, if it's just shell script, then the environment variable approach can also work out there.
The only problem seems, that I should do the substitution before checksumming the compiler.
I think I can inject something into the makefile, or use a patched vesion of libtool.
A patched libtool could be a better option, so other ddc projects can use it.
I guess I can do something like add an environment variable GUIX_INSTALL_DIRECTORY, or something like that...
Any maybe name this version libtool-for-ddc.
It should be noted in the package documentation, that this package is not recommended for general use.
WDYT?