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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: * Upgrading from LyX 1.5.x:
The format of preference and session files has changed. LyX 1.6.x is The format of preference and session files has changed. LyX 1.6.x is
@ -82,44 +92,39 @@ have to update them
Build requirements Build requirements
------------------ ------------------
LyX 1.6 uses the Qt 4.x toolkit (version 4.2.0 or newer). Contrary to LyX 2.0 uses the Qt 4.x toolkit (version 4.4.0 or newer).
previous versions of LyX, it won't build against Qt 2.x or 3.x.
Furthermore, the XForms frontend was dropped.
LyX's graphics handling system has changed substantially. If you If you do not have the JPEG library installed, you may need to install it
do not have the JPEG library installed, you may need to install before you can use the graphics capabilities of LyX. If you do not have the
it before you can use the graphics capabilities of LyX. If you ImageMagick command-line tools installed, you will need to modify the default
do not have the ImageMagick command-line tools installed, you set up of LyX, or install them, in order to get previews of your document's
will need to modify the default set up of LyX, or install them, graphics.
in order to get previews of your document's graphics.
Document transfer Document transfer
----------------- -----------------
* Compatibility with older documents/layouts * 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 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 0.10 are supported.
to xforms will finally be able to put their dinosaur to rest ;-)
Of course, this means that you must have python (at least version 2.3.4) Of course, this means that you must have python (>= 2.3.4, <3)
installed in order to use LyX 1.6.x with your old documents. 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 lyx2lyx also has the framework in place to be able to convert documents to an
documents to an earlier format (which requires python 2.3.4 at earlier format (which requires python 2.3.4 at least). However, these
least). However, these converters have only been written for the converters have only been written for the conversion from 2.0.x to 1.6.x,
conversion from 1.6.x to 1.5.x, 1.4.x and 1.3.x, so versions of LyX 1.5.x, 1.4.x and 1.3.x, so versions of LyX older than 1.3.0 will NOT be able to
older than 1.3.0 will NOT be able to read documents saved with LyX read documents saved with LyX 2.0.x. The conversion from 2.0.x to 1.6.x-1.3.x
1.6.x. The conversion from 1.6.x to 1.5.x-1.3.x is lossless as long as is lossless as long as no new features are used. lyx2lyx tries hard to find
no new features are used. lyx2lyx tries hard to find something something equivalent for new features such as boxes, but this is known to fail
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
sometimes. LyX 1.5.7 contains an updated lyx2lyx that can read 2.0.x format.
documents in 1.6.x format.
Furthermore, LyX uses a converter layout2layout.py, also written in python 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 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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