The README.md currently suggests these commands to install rvm:
curl -sSL https://rvm.io/mpapis.asc | gpg --import -
curl -sSL https://rvm.io/pkuczynski.asc | gpg --import -
curl -sSL https://get.rvm.io | bash -s stable
source $HOME/.rvm/scripts/rvm
echo 'source "$HOME/.rvm/scripts/rvm"' >> ~/.bashrc
rvm install 2.7.3 --disable-binary --with-jemalloc
Instead of downloading the https://get.rvm.io script, just put the
two keys in the repository and do the basic operations that are
required, rather than grabbing a shell script from a website and just
running it.
Also, run `rvm autolibs disable` so that the `rvm` command, which
does not run as root, will not seek to use sudo. I checked the
Debian system requirements that `rvm requirements` was looking for,
and added those to `script/build/debian/prebuild.sh`.
Hopefully, the semantics of `rvm requirements` is that it will exit
non-zero if some requirements are missing, which is the desired
behavior, since it flags that `script/build/debian/prebuild.sh` must
be updated.
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