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This work is not complete and the install and build instructions need to be sanity checked and updated for modern versions of all three platforms.
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Installation and usage of the Scyther tool
Requirements
To be able to use all of Scyther's features, the following three dependencies are needed. If you only require the back-end tool (used from the command line) then you need only the first.
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The GraphViz library
This library is used by the Scyther tool to draw graphs. It can be freely downloaded from:
http://www.graphviz.org/
Download the latest stable release and install it.
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Python
Stable releases of the Python interpreter are available from:
http://www.python.org/download/
Scyther does not support Python 3. You are therefore recommended to choose the latest production release of Python 2, e.g., Python 2.7.
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Mac OS X
If the package yields an error when you try to install it, please use the following, in the directory where you downloaded it:
$ sudo installer -pkg graphviz-2.34.0.pkg -target /
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wxPython libraries
The GUI user interface uses the wxPython libraries.
The recommended way of installing is through pip and described this page:
https://www.wxpython.org/download.php
This version of Scyther requires at least wxPython 4.0. Note that older versions of Scyther did not work with wxPython 4.
For Ubuntu users, it is important to add an additional parameter, e.g., for Ubuntu 20.04, the recommended pip install is:
$ sudo apt install python-pip
$ pip install -U \
-f https://extras.wxpython.org/wxPython4/extras/linux/gtk3/ubuntu-20.04 \
wxPython
Running Scyther
Extract the Scyther archive and navigate to the extracted directory.
Start Scyther by executing the file
`scyther-gui.py`
in the main directory of the extracted archive.
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Mac OS X
Right-click the file
scyther-gui.pyand select "Open with" and then "Python Launcher".