Installing

Requirements:

A Scheme compiler; either Chez Scheme (default), or Racket
bash, with realpath. On Linux, you probably already have this. On a Mac, you can install this with brew install coreutils.

On Windows, it has been reported that installing via MSYS2 works (https://www.msys2.org/)

By default, code generation is via Chez Scheme. You can use Racket instead, by passing CG=racket to make for the commands below.

[Note: a couple of tests are currently known to fail when installing via Racket. This will be addressed soon!]

0: Set the PREFIX

Change the PREFIX in config.mk. The default is to install in $HOME/.idris2sh

If you have an existing Idris 2, go to step 1b. Otherwise, read on...

Make sure that:

$PREFIX/bin is in your PATH
$PREFIX/lib is in your LD_LIBRARY_PATH or DYLD_LIBRARY_PATH if on macOS (so that the system knows where to look for library support code)

1a: Installing without an existing Idris 2

If you don't have Idris-2-in-Idris-1 installed, you can build from pre-built Chez Scheme source, as long as you have Chez Scheme installed (or, alternatively, Racket). To do this, enter one of the following:

make bootstrap SCHEME=chez
make bootstrap-racket

chez 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 scheme, 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). It then rebuilds using the result, and runs the tests.

If all is well, to install, type:

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, assuming that idris2sh is in your PATH.

make clean -- to make sure you're building everything with the new version
make all IDRIS2_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.

3: Testing

After make all, type make test to check everything works. This uses the executable in ./build/exec.

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