Dear All,

My project requires the use of a specific R package. However, this R
package has been removed from CRAN. But its older version can be found.
Unfortunately, the older version cannot be used. The thing is, after I
downloaded the older version and unzip it into the library folder of  R,
and I input library("package name"), it says that the package "is not a
valid installed package".

After an intensive search, I found a possible solution: to rebuild this R
package so that it may work properly. I have no idea how to make this
achieved because of my little experience on rebuilding an R package.

I highly appreciate your help.

Sincere thanks.
Zuofeng

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