Include the full path to EGRET_1.2.3.tar.gz to install the package (here is a Windows example, note the direction of the slashes -> /, this is backwards from how Windows typically defines a path ):
Include the full path to EGRET_1.2.3.tar.gz to install the package (here is a Windows example, note the direction of the slashes -> /, this is backwards from how Windows typically defines a path ):