Binary installation

Qrhl-tool requires Linux, OS/X, or Windows to run.

You can download the qrhl-tool binaries here.

The binary development snapshot can be downloaded from here.

Prerequisites

• Java must be installed (at least Java 11), and the java executable must be in the path.
• Emacs must be installed, and the emacs executable must be in the path (otherwise edit proofgeneral.sh). At least Emacs 25 is required.

To check whether this is the case, go into a terminal, and enter java -version or emacs -version, respectively, and see whether the commands are found.

• Isabelle2024 must be installed. Simply download it and unpack it somewhere.
• The AFP (version 2025) must be installed. Download it here and unpack it somewhere.

Installation

Simply unpack qrhl.zip. This will create a directory called qrhl-0.7.3. (Or qrhl-snapshot in case of the development snapshot.)

Edit .qrhl-tool.conf in your home directory. Add the configuration keys isabelle-home = <where you unpackaged Isabelle> and afp-root = <where you unpackaged AFP>. (See qrhl-tool.conf.sample in the distribution directory.)

To update, simply extract the new version. (Possibly updating .qrhl-tool.conf if the Isabelle version has changed.)

Executing the demos

In the qrhl-0.7.3 directory, execute proofgeneral.sh.

This will open emacs running ProofGeneral configured for the qrhl tool. Open one of the example files in examples/, e.g. example.qrhl.

(See invoking ProofGeneral for alternative ways, or if you use Windows.)

To step through the examples, use Ctrl-C Ctrl-N to go forward one proof step, Ctrl-C Ctrl-U to go back one. You will see the current goal and some messages withing the Emacs/ProofGeneral window. (Or you can use Ctrl-C Ctrl-Return to execute to the cursor position.) See the ProofGeneral manual for more information.

Note: The first step of the proof script (isabelle.) will take very long upon first activation, because it will build all required Isabelle theories. Do not start other instances of Isabelle or the tool while this is in progress.

Editing the Isabelle theory files

Some examples depend on an accompanying Isabelle theory. (E.g., prg-enc-rorcpa.qrhl depends on the Isabelle theory PrgEnc.thy.) To edit that theory, run Isabelle using the isabelle.sh script. (isabelle.ps1 on Windows.) Then open and edit the file normally.

Compiling / running from source

• Make sure that sbt (Scala Build Tool) is on the path.
• Use git clone https://github.com/dominique-unruh/qrhl-tool.git to download the sources.
• Use git checkout master (replace master by the version/git revision you wish to compile, e.g., v0.7.3).
• Create a qrhl-tool.conf file as described in the binary installation section above.
• Run ./isabelle.sh as described above (this will (re)compile the sources if needed).
• Run bin/qrhl to run the tool on the command line.
• Run make qrhl.zip to generate the binary qrhl.zip.
• Run sbt test to run the unit tests.
• You can also open the directory as a project in Intelli/J IDEA, but you should invoke sbt assembly before the first time.