Babel

Babel is a set of tools to manage versions of your favorite programming languages.

To build and install GO 1.3.3:

go-build 1.3.3

To use this GO version, run version script that list all installed versions:

$ version go
Please choose a version:
0: Default
1: 1.0.3
2: 1.1.2
3: 1.2.2 *
4: 1.3.3
4
Selecting go version '1.3.3'
$ go version
go version go1.3.3 linux/amd64

This tool is able to build and manage following programming languages:

• Go
• Lua
• Python
• Ruby
• Java

Build scripts builds and install VMs or compiler in directory /opt/<lang>/<version>. Thus GO 1.3.3 would be installed in directory /opt/go/1.3.3.

Script version selects a given version by making a symbolic link between /opt/<lang>/<version> and /opt/<lang>/current.

Thus, if you put directory /opt/<lang>/current/bin in your PATH, you would run selected version.

This system is straightforward and works fine.

To install Babel:

• Drop scripts somewhere in your PATH.
• Create directories /opt/go, i/opt/lua, /opt/python, /opt/ruby and/or /opt/java depending on which language you want to manage.

Build your VMs with scripts <lang>-build version (except for Java that you install already built in appropriate directory /opt/java/&lt:version>).

GO has no VM, thus:

• go-build script will install a given compiler and GO tools.
• version go script will switch between these versions.

You must set following environment variables:

• PATH: must include /opt/go/current/bin.
• GOROOT: must be /opt/go/current.
• GOPATH: must be set as you wish (~/go for instance).

Note:

Even if tests fail (which is the case for release 1.1 for instance), the compiler is installed. Nevertheless, tools are not.

• lua-build script will build the VM for the given version.
• version lua script will switch between these versions.

• python-build script will build the VM for given version.
• version python script will switch between these versions.

To build Python VM, you must install ifollowing development libraries:

• tetex-nox and latex2html to generate documentation for 2.6 and earlier versions.
• libreadline-dev to enable completion and line edition in interpreter.
• libssl-dev to enable HTTPS.
• libzip-dev, libtar-dev, libbz2-dev, zlib1g-dev to enable ZIP and TAR support.
• libmysqld-dev, libmysqlclient-dev and python-dev to install MySQL driver.
• libsqlite3-dev to enable sqlite3 support.

• ruby-build script will build the VM for the given version.
• version ruby script will switch between these versions.

• There is no build script: drop Java tarball content in /opt/java/<version> directory.
• version java script will switch between these versions.

You must set following environment variables:

• PATH: must include /opt/go/current/bin.
• JAVA_HOME: must be /opt/java/current.

You can download Babel here: https://github.com/c4s4/babel/releases.

• 0.2.0 (2015-03-24): Added Lua support.
• 0.1.0 (2014-11-05): First public release.