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About Meld

Meld is a visual diff and merge tool targeted at developers. Meld helps you compare files, directories, and version controlled projects. It provides two- and three-way comparison of both files and directories, and supports many version control systems including Git, Mercurial, Bazaar and Subversion.

Meld helps you review code changes, understand patches, and makes enormous merge conflicts slightly less painful.

Meld is licensed under the GPL v2 or later.


  • Python 3.4
  • pycairo (Python3 bindings for cairo without GObject layer)
  • PyGObject 3.20 (Python3 bindings for GObject introspection)
  • gsettings-desktop-schemas

And following packages with GObject introspection:

  • GLib 2.36 (meld install also needs GLib binaries like glib-compile-schemas)
  • Pango
  • PangoCairo
  • GTK+ 3.20
  • GtkSourceView 3.20 (note that GtkSourceView 4 is not supported)

Build requirements

System packages:

  • intltool
  • itstool
  • xmllint

Python packages:

  • distro

Building Windows MSIs requires:

  • cx_Freeze 5
  • pywin32/pypiwin32 (optional, for storing version info in Meld.exe)


Meld can be run directly from this source tree directory. Just type:

  • bin/meld

Alternatively, you can install Meld system-wide by running:

  • python3 install

or if you're on Ubuntu, instead try:

  • python3 install --prefix=/usr

...but you should probably just get a RPM/deb/installer instead, depending on your system. Meld packages are available for just about every *nix distribution.

For Windows users, MSIs are available from the Meld home page. Also if all dependencies are installed manually, running from source tree is supported:

  • python3.exe bin/meld

For OSX users, Meld can be installed on OSX using MacPorts/Fink/etc. There are also unofficial native builds available for older releases. See the wiki for details.


Meld uses standard distutils for building. It supports anything that distutils supports, and little else.

Additional hacks are added to make life easier for packagers where required, such as:

  • Passing --no-update-icon-cache will stop Meld from running gtk-update-icon-cache post-install
  • Passing --no-compile-schemas will stop Meld from trying to compile gsettings schemas post-install

These arguments need to be passed to itself, not to the install command. In other words, do this:

python3 --no-compile-schemas install

not this:

python3 install --no-compile-schemas

Windows installer can be built with command

C:\Python34\python.exe bdist_msi

that creates file dist/Meld-VERSION-ARCH.msi


Meld uses GNOME's GitLab to track bugs, and user questions and development discussions happen on the Meld mailing list. The development team is small, and new contributors are always welcome!

List of issues:

Mailing list:


Home page:



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