N.B. the following is supported natively on MacOS and Linux. On Windows you'll need to use WSL.

Install the Imandra CLI imandra, by running the command below in a terminal:

sh <(curl -s "")

This tool is Python based (requires Python 3) allows you to use Imandra's cloud APIs, and also aids with installation of Imandra Core.

Installation of Imandra Core

In order to use Imandra Core tools such as our Imandra REPL, you additionally need a local OCaml environment to be setup. The installer will set up a new OCaml environment (using the opam installer), and then install Imandra. Invoke the installer by running:

imandra core install

The installer will:

  • Check for the presence of the opam package manager
  • If not present it will install version 2 for the current user
  • If present it will upgrade the current installation to version 2, if necessary
  • Setup an OCaml 4.12.1 environment for Imandra
  • Download, setup and install Imandra into its OCaml environment in /usr/local/var/imandra/ (documentation for Imandra modules can be found in _opam/doc/index.html)
  • Install system-level binaries for the Imandra repl and its utilities

The entire setup process will take a while. The process is almost entirely automatic but you might be prompted for input a couple of times, either to authenticate using sudo or for setting installation paths (we recommend using the default options).

After the installation is finished, you should have the following binaries installed in your installation path (/usr/local/bin unless you specified a custom one):

  • imandra: this is the main Imandra entrypoint
  • imandra-repl: this is the Imandra repl
  • imandra-http-server: an http api around core Imandra features, with endpoints for evaluation, verification, instance generation etc. For more information, hit the /spec endpoint when the server is running for a full specification of endpoints and request/response formats for the version you have installed.
  • imandra-jupyter-kernel: an Imandra kernel for Jupyter notebooks. See Jupyter installation instructions for further details.
  • imandra-extract: a utility to transpile files from IML syntax into either OCaml or Reason syntax

The following tooling utilities will also be installed alongside the main binaries, they are used to provide merlin integration for IDEs while writing or editing Imandra code:

  • imandra-merlin
  • ocamlmerlin
  • ocamlmerlin-imandra
  • ocamlmerlin-imandra-reason

Additionally, the imandra-vscode-server binary will be installed to provide full asynchronous proof-checking in the VSCode based Imandra IDE. Please see the Installation Page for details.