@wpoely86 Turns out only checking for the CUDA version to enable the check is a bit optimistic...

Installation of CUDA-8.0.61_375.26-GCC-5.4.0-2.26.eb now fails with:

== FAILED: Installation ended unsuccessfully (build directory: /tmp/easybuild_build/CUDA/8.0.61_375.26/GCC-5.4.0-2.26): build failed (first 300 chars): Unable to find the correct version (8.0.61_375.26) in the version.txt file

because of

$ cat $EASYBUILD_PREFIX/software/CUDA/8.0.61_375.26-GCC-5.4.0-2.26/version.txt
CUDA Version 8.0.61

while the version is 8.0.61_375.26

So better only enable the check when more than one source file is provided?

That still will not help. If some easyconfigs use a different version scheme, there isn't much I can do? I can limit it to version 9 and newer which all use the same version convention?

@wpoely86 Fine by me, I don't expect we'll be installing CUDA 8.x with patches anyway...