Installing Clojure in Cloud9

Install Java 8. At the terminal type:

sudo yum -y install java-1.8.0-openjdk java-1.8.0-openjdk-devel

Run the following command and select version 8 of the JRE:

sudo update-alternatives --config java

To see if you’ve got the correct Java version:

java -version

You should see something like:

openjdk version "1.8.0_171"
OpenJDK Runtime Environment (build 1.8.0_171-b10)
OpenJDK 64-Bit Server VM (build 25.171-b10, mixed mode)

Install rlwrap:

wget http://dl.fedoraproject.org/pub/epel/7/x86_64/Packages/r/rlwrap-0.42-1.el7.x86_64.rpm

sudo yum -y install rlwrap-0.42-1.el7.x86_64.rpm

Install Clojure 1.9:

curl -O https://download.clojure.org/install/linux-install-1.9.0.391.sh

chmod +x linux-install-1.9.0.391.sh

sudo ./linux-install-1.9.0.391.sh

Add the following dependencies to /usr/local/lib/clojure/deps.edn using an editor available from the command line and with super user privileges (sudo vim):

:deps {
  org.clojure/clojure            {:mvn/version "1.9.0"}
  org.clojure/core.logic         {:mvn/version "0.8.11"}
  org.clojure/math.numeric-tower {:mvn/version "0.0.4"}
}

To run the Clojure REPL:
```
clj
```
Type Ctrl-D to quit the REPL.