Hi,
I am writting because I am doing a package in R and I have some problems
installing dependences which appear at DESCRIPTION file.
First of all, I am not sure about the difference between �Depends� and
�Imports�, but I only use �Depends�.
My problem is that my package is going to be used at different computers and
for different persons so I want that when other person use my package, it can
be able to check if the necesary packages are installed and if they are not
installed, the package must be able to install them.
I supposed that this problem was solved including the necesary packages and
their versions at �Depends�. And now, I have another problem because the
versions are usually indicated using �>=�, for example: forecast (>=8.7) but I
need to use exactly the versi�n 8.7 because sometimes when packages are
updated, they lost some functions. But if I use �<=� or �==� and the package is
update to versi�n 8.8, my package installation fail.
How can I solve this? If I use R normaly (outside my package), I can install
older versions of other packages using devtools::install_version() so why when
I indicate � forecast (<=8.7)� at Depends on the DESCRIPTION file, R is not
able to install an older version if a new one is avaliable?
Thanks in advance for your attention.
Best regards,
Andrea.
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