contrib/wix/README.txt

sparse: override dirstate.walk() instead of dirstate._ignore

Instead of treating files that are outside the sparse config as
ignored, this makes it so we list only those that are within the
sparse config by passing the sparse matcher to dirstate.walk().

Once we add support for narrow (sparseness applied to history, not
just working copy), we will need to do a similar restriction of the
walk over manifests, so this will be more consistent then. It also
simplifies the code a bit.

Note that a side-effect of this change is that files outside the
sparse config used to be listed as ignored, but they will now not be
listed at all. This can be seen in the test case where "hg purge" no
longer has any effect because it doesn't see that the files outside
the space config exist. To fix that, I think we should add an option
to dirstate.walk() to walk outside the sparse config. We might expose
that to the user as --no-sparse flag to e.g. "hg status" and "hg
purge", but that's work for another day.

Differential Revision: https://phab.mercurial-scm.org/D59

WiX installer source files
==========================

The files in this folder are used by the thg-winbuild [1] package
building architecture to create a Mercurial MSI installer.   These files
are versioned within the Mercurial source tree because the WXS files
must kept up to date with distribution changes within their branch.  In
other words, the default branch WXS files are expected to diverge from
the stable branch WXS files.  Storing them within the same repository is
the only sane way to keep the source tree and the installer in sync.

The MSI installer builder uses only the mercurial.ini file from the
contrib/win32 folder, the contents of which have been historically used
to create an InnoSetup based installer.  The rest of the files there are
ignored.

The MSI packages built by thg-winbuild require elevated (admin)
privileges to be installed due to the installation of MSVC CRT libraries
under the C:\WINDOWS\WinSxS folder.  Thus the InnoSetup installers may
still be useful to some users.

To build your own MSI packages, clone the thg-winbuild [1] repository
and follow the README.txt [2] instructions closely.  There are fewer
prerequisites for a WiX [3] installer than an InnoSetup installer, but
they are more specific.

Direct questions or comments to Steve Borho <[e-mail]>

[1] http://bitbucket.org/tortoisehg/thg-winbuild
[2] http://bitbucket.org/tortoisehg/thg-winbuild/src/tip/README.txt
[3] http://wix.sourceforge.net/