If you want to contribute then you might want to install Crystal from sources.
Install the latest Crystal release. To compile Crystal, you need Crystal :).
Make sure a supported LLVM version is present in the path. When possible, use the latest supported version.
Make sure to install all the required libraries. You might also want to read the contributing guide.
Clone the repository:
git clone https://github.com/crystal-lang/crystal
maketo build your own version of the compiler.
make std_spec compiler_specto ensure all specs pass, and you’ve installed everything correctly.
bin/crystalto run your crystal files.
If you would like more information about
bin/crystal, check out the using the compiler documentation.
Note: The actual binary is built in to
.build/crystal, but the
bin/crystal wrapper script is what you should use to run crystal.