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* UPGRADING

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Richard, there is probably one paragraph about
refstyle changes and our intensions in future to
be added at the end of this file.




git-svn-id: svn://svn.lyx.org/lyx/lyx-devel/trunk@36171 a592a061-630c-0410-9148-cb99ea01b6c8
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Pavel Sanda 2010-11-06 23:27:01 +00:00
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UPGRADING
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@ -1,6 +1,16 @@
How do I upgrade my existing LyX system to version 1.6.x?
How do I upgrade my existing LyX system to version 2.0.x?
---------------------------------------------------------
* Upgrading from LyX 1.6.x:
The format of preference and session files has changed. LyX 2.0.x is
able to read old files but will save them in the new format.
The format of layout files has changed but, as before,
layout2layout.py will convert older versions to the new format
automatically.
* Upgrading from LyX 1.5.x:
The format of preference and session files has changed. LyX 1.6.x is
@ -82,44 +92,39 @@ have to update them
Build requirements
------------------
LyX 1.6 uses the Qt 4.x toolkit (version 4.2.0 or newer). Contrary to
previous versions of LyX, it won't build against Qt 2.x or 3.x.
Furthermore, the XForms frontend was dropped.
LyX 2.0 uses the Qt 4.x toolkit (version 4.4.0 or newer).
LyX's graphics handling system has changed substantially. If you
do not have the JPEG library installed, you may need to install
it before you can use the graphics capabilities of LyX. If you
do not have the ImageMagick command-line tools installed, you
will need to modify the default set up of LyX, or install them,
in order to get previews of your document's graphics.
If you do not have the JPEG library installed, you may need to install it
before you can use the graphics capabilities of LyX. If you do not have the
ImageMagick command-line tools installed, you will need to modify the default
set up of LyX, or install them, in order to get previews of your document's
graphics.
Document transfer
-----------------
* Compatibility with older documents/layouts
LyX 1.6.x uses an external python script, lyx2lyx, to import documents
LyX 2.0.x uses an external python script, lyx2lyx, to import documents
written using previous versions of LyX. All versions of LyX as far back as
0.10 are supported, so any klyx users still holding out for an alternative
to xforms will finally be able to put their dinosaur to rest ;-)
0.10 are supported.
Of course, this means that you must have python (at least version 2.3.4)
installed in order to use LyX 1.6.x with your old documents.
Of course, this means that you must have python (>= 2.3.4, <3)
installed in order to use LyX 2.0.x with your old documents.
lyx2lyx also has the framework in place to be able to convert
documents to an earlier format (which requires python 2.3.4 at
least). However, these converters have only been written for the
conversion from 1.6.x to 1.5.x, 1.4.x and 1.3.x, so versions of LyX
older than 1.3.0 will NOT be able to read documents saved with LyX
1.6.x. The conversion from 1.6.x to 1.5.x-1.3.x is lossless as long as
no new features are used. lyx2lyx tries hard to find something
equivalent for new features such as boxes, but this is known to fail
sometimes. LyX 1.5.7 contains an updated lyx2lyx that can read
documents in 1.6.x format.
lyx2lyx also has the framework in place to be able to convert documents to an
earlier format (which requires python 2.3.4 at least). However, these
converters have only been written for the conversion from 2.0.x to 1.6.x,
1.5.x, 1.4.x and 1.3.x, so versions of LyX older than 1.3.0 will NOT be able to
read documents saved with LyX 2.0.x. The conversion from 2.0.x to 1.6.x-1.3.x
is lossless as long as no new features are used. lyx2lyx tries hard to find
something equivalent for new features such as boxes, but this is known to fail
sometimes. LyX 1.6.9 contains an updated lyx2lyx that can read documents in
2.0.x format.
Furthermore, LyX uses a converter layout2layout.py, also written in python
that will convert old layout files on the fly. You can also call it manually
on your layout files if you want to convert them to 1.6.x format permanently.
on your layout files if you want to convert them to 2.0.x format permanently.
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