goalprog package for goal seeking - Optimization

Hello my beloved mentors , friends.
i have operations research problems that will be solved using goal programming techniques. I'm trying to install goalprog package but couldn't do that.

install.packages("goalprog",dependencies = TRUE)
WARNING: Rtools is required to build R packages but is not currently installed. Please download and install the appropriate version of Rtools before proceeding:

Installing package into ‘C:/Users/hady.shaaban/Documents/R/win-library/3.6’
(as ‘lib’ is unspecified)
Warning in install.packages :
  package ‘goalprog’ is not available (for R version 3.6.1)
> library(goalprog)
Error in library(goalprog) : ‘goalprog’ is not a valid installed package

How can i install this package ?
thanks in advance

The package was removed from CRAN. You can still install archived versions:

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