What is this?

brewstrap is a hack allowing to install Linuxbrew on a system lacking compiler and package manager. It bundles the required software, hacks the installer and then installs all of the essential software.

How to use it?

On a "host" machine run the deploy.sh script. It will produce dist/brewstrap-$VERSION.sh which s both a bootstrap script as well as an archive containing necessary binaries. It is around 50MB but well worth it.

Next, transfer the said bootstrap script to a target machine and run ./brewstrap-$VERSION.sh (substituting $VERSION with appropriate digits. After around half an hour you should have a somewhat working Linuxbrew installation

IMPORTANT: instead of usual brew command you should be using sbrew wrapper (installed by the bootstrap script). This will hopefully change in the future.

Target requirements

Target system only needs a modest set of tools available:

• /bin/sh
• working glibc installation including libpthread.so
• awk
• cat
• chmod
• mkdir
• sed
• tail
• tar

An example of a target system can be obtained from contained Dockerfile. Whole system takes 84MB (80MB of it being glibc).

Future work

• Integrate as much as possible into Linuxbrew
• Slim down the bootsrap archive (if possible)
• Maybe drop the libpthread and glibc dependency?