Idris2/INSTALL.md

Installing

Requirements: Chez Scheme (with threading support) and bash. On a Mac, you will need to install coreutils to have access to realpath.

0: Fix hard coded prefix (sorry)

This isn't easily configurable yet - I will deal with it soon. So, before you start:

• Change the prefix which is currently hard coded in Idris.Main.

1a: Installing without an existing Idris 2

If you don't have Idris-2-in-Idris-1 installed, you can still build a bootstrapping compiler, as long as you have Chez Scheme installed. This is a bit more fiddly than if you have Idris 2 installed (for the moment) but you only have to do it once.

To begin, enter:

• make init-bootstrap SCHEME=scheme

(scheme is the executable name of the Chez Scheme compiler. You may need to replace this with the executable for Chez Scheme on your system. This could be chez, chezscheme or chezscheme9.5 or something else, depending on your system and the Chez Scheme version).

This builds an Idris 2 compiler from scheme code output from a working Idris 2 compiler (which isn't necessarily up to date, but is up to date enough to build the current repository).

Then, to build Idris 2 (again using your local variant for scheme)

• make libs IDRIS2_BOOT=bootstrap/idris2-boot SCHEME=scheme
• make all IDRIS2_BOOT=bootstrap/idris2-boot SCHEME=scheme
• make install

1b: Installing with an existing Idris 2

If you have Idris-2-in-Idris-1 installed:

• make all && make install

2: Self-hosting step

Then, to build from the newly installed idris2sh

• make clean -- to make sure you're building everything with the new version
• make all IDRIS_BOOT=idris2sh && make install

For amusement, try using time on the above. I get about 3m for installing from idris2, and about 1m45 for installing from idris2sh.