Avoid an installation if the requested ruby is already installed

[ferrarimarco]

Currently I am running ruby-install ruby x.x.x to install Ruby as a non privileged user.

If I run the same command again with the same user, ruby-install does not check if the package is already installed, but installs it one more time, leading to a waste of time.

[postmodern]

There is a --no-reinstall flag, or do you want --no-reinstall to be the default behavior?

[havenwood]

@ferrarimarco Sometimes folk build the same version once again but differently.

[ferrarimarco]

@postmodern I didn't notice the flag. Is there any documentation? Maybe it could be useful to have a --force-reinstall flag and the --no-reinstall be the default, like other package managers do, like pip for example.

@havenwood I think it's a bad practice so it should not be encouraged.

[havenwood]

@ferrarimarco What's bad practice about rebuilding the same version with different build options? Say for example you want to rebuild 2.3.0 with tail call optimization or whatever else?

[ferrarimarco]

@havenwood I misunderstood your first answer. This is a perfectly fine use case.