1 How do I upgrade my existing LyX system to version 1.6.x?
2 ---------------------------------------------------------
4 * Upgrading from LyX 1.5.x:
6 The format of preference and session files has changed. LyX 1.6.x is
7 able to read old files but will save them in the new format.
9 The format of layout files has changed but, as before,
10 layout2layout.py will convert older versions to the new format
13 * Upgrading from LyX 1.4.x:
15 The biggest change in 1.5 is the switch to Unicode. Please refer to
16 the section "Document transfer" below for some things you might take
17 into account before upgrading.
19 The format of the preferences file has changed slightly. LyX 1.5.x is
20 able to read old preferences files, but it will save them in the new
21 format, so it is not possible to run LyX 1.4.x and 1.5.x with the same
22 personal configuration directory. If you are upgrading from 1.4.x and
23 do not intend to continue using 1.4.x, you should delete your existing
24 preferences file and allow LyX to create a new one.
26 The list of recently open files is now stored in a different location.
27 It will therefore be reset when upgrading from LyX 1.4.x.
29 The format of the layout files has also changed, but LyX 1.5.x uses a
30 converter layout2layout.py written in python that will convert old layout
31 files on the fly (see below, section "Document transfer").
33 * Upgrading from LyX 1.3.x:
35 The format of the external template file has changed substantially with
36 LyX 1.4.0. Automatic conversion is not available, so you need to convert
37 your external templates manually. The new format of the external template
38 configuration file is described in chapter 6.5 of the Customization Guide.
40 * Upgrading from LyX 1.2.x:
42 Since 1.3.0, you have to do the following changes:
44 One of the perennial bug bears of LyX users in the past has been that
45 they have had to run Edit->Reconfigure when starting their new version
46 of the code for the first time. Strange and wonderful things would
47 often result if they forgot to do this, so LyX 1.3.0 now runs
48 Edit->Reconfigure automatically the first time the program is run.
50 If you have your own layout files, you may need to update them a little:
52 - floats are now defined in the layout file, using the "Float"..."End"
53 construct. In most cases, adding "Input stdfloats.inc" to your layout
56 - counters are also defined in the layout files, using the
57 "Counter"..."End" construct. As for floats, adding "Input
58 stdfloats.inc" is probably a good idea.
60 * Upgrading from LyX 1.1.x:
62 - all layout files should have a "DefaultStyle" entry
64 - the "Latex" font style does not exist anymore. If you really need
65 its functionality, consider using the "PassThru" keyword instead.
67 The new layout format keywords are described in the Customization
70 If you have your own binding files (especially math.bind), you will
73 - math-insert now takes a latex macro name as argument, so that
74 "math-insert sqrt" should now be "\math-insert \sqrt"
76 - math-greek-toggle is now gone, and should be replaced by explicit
79 \bind "M-m g a" "math-insert \alpha"
85 LyX 1.6 uses the Qt 4.x toolkit (version 4.2.0 or newer). Contrary to
86 previous versions of LyX, it won't build against Qt 2.x or 3.x.
87 Furthermore, the XForms frontend was dropped.
89 LyX's graphics handling system has changed substantially. If you
90 do not have the JPEG library installed, you may need to install
91 it before you can use the graphics capabilities of LyX. If you
92 do not have the ImageMagick command-line tools installed, you
93 will need to modify the default set up of LyX, or install them,
94 in order to get previews of your document's graphics.
99 * Compatibility with older documents/layouts
101 LyX 1.6.x uses an external python script, lyx2lyx, to import documents
102 written using previous versions of LyX. All versions of LyX as far back as
103 0.10 are supported, so any klyx users still holding out for an alternative
104 to xforms will finally be able to put their dinosaur to rest ;-)
106 Of course, this means that you must have python (at least version 2.3.4)
107 installed in order to use LyX 1.6.x with your old documents.
109 lyx2lyx also has the framework in place to be able to convert
110 documents to an earlier format (which requires python 2.3.4 at
111 least). However, these converters have only been written for the
112 conversion from 1.6.x to 1.5.x, 1.4.x and 1.3.x, so versions of LyX
113 older than 1.3.0 will NOT be able to read documents saved with LyX
114 1.6.x. The conversion from 1.6.x to 1.5.x-1.3.x is lossless as long as
115 no new features are used. lyx2lyx tries hard to find something
116 equivalent for new features such as boxes, but this is known to fail
117 sometimes. LyX 1.5.7 contains an updated lyx2lyx that can read
118 documents in 1.6.x format.
120 Furthermore, LyX uses a converter layout2layout.py, also written in python
121 that will convert old layout files on the fly. You can also call it manually
122 on your layout files if you want to convert them to 1.6.x format permanently.
124 * Preparing for Unicode:
126 As of version 1.5.0, LyX uses Unicode internally. This is a major change that
127 affects documents and layouts likewise. We have tried to do out best to make the
128 transition as smooth as possible for you. However, there are some caveats:
130 - User layout files must be converted to UTF-8
132 In previous versions, layout styles were allowed to use non-ASCII names
133 using the local encodings. LyX-1.5 now assumes that all layout files are
134 UTF-8 encoded. This means that non-ASCII style names are still allowed
135 but they must be valid UTF-8 strings. One way of doing the conversion
136 is to use iconv. Using bash, the script below should work:
144 iconv -f latin1 -t utf8 tmp.txt -o "$l"
148 - Inset encodings and Conversion from earlier LyX versions
150 As part of the transition to unicode, lyx2lyx (the scripts used for
151 converting back and forth between different versions of the lyx
152 files) converts old .lyx files, which may use a number of different
153 encodings, to UTF-8. This conversion depends on correctly
154 identifying the language of the text. There were previously some
155 edge-cases (insets embedded in different-language text type
156 scenarios) in which the language was incorrectly identified, which
157 caused some text to appear incorrectly after having upgraded from
158 older versions. This has now been fixed. Unfortunately, however, the
159 fix cannot be applied to files which have already been converted
160 past format 249. So if you have already converted your old files
161 (using a development version or release candidate), this fix won't
162 help, unless you still have the originals lying around (and haven't
163 yet made too many changes to the newer versions ;) ).
165 Generally, it is probably wise to keep a backup of the old version of your
166 files, at least until you are sure that the upgrade went smoothly (which it
169 * Languages/encodings and insets
171 One of the bugs fixed in LyX 1.5.0 is that previously, there were certain
172 specific cases in which the LaTeX generated did not correctly reflect
173 language/encoding transitions in and around insets (footnotes, LyX notes).
174 After much deliberation, it was decided not to change older files such that
175 they will still reflect the old LaTeX output; rather, they will now correctly
176 reflect the situation as it appears in the GUI. This means, however, that if
177 you mangled the text in the GUI in the older versions, in order that it
178 generate the correct LaTeX output, the LaTeX will now generate the mangled
179 text. If this is problematic for you, please get in touch with us on the
180 developers mailing list, we do have some possible solutions for this.
182 The effects of this will be more pronounced for RTL (Hebrew, Arabic, Farsi)
183 users -- though they affect users of other languages as well.
185 * Floatflt in 1.2.x and older
187 If you were previously (in LyX 1.1.x) using the floatflt paragraph
188 option to wrap text around a figure, it was necessary to modify this
189 for LyX 1.2.0 manually, as described in the manuals. The feature has
190 been re-implemented as "Floating figure" inset in 1.3.0. Old files will
191 be converted automatically, but you may want to convert the
192 1.2.x-style ERT constructs with the native solution (see section 3.8
193 of the Extended Features manual).
195 * Babel changes since 1.2.x
197 Since LyX 1.2.0, the babel package is loaded after the user-defined
198 preamble (because some packages really need to be loaded before
199 babel). If you relied, on babel being loaded before your own
200 definitions, you can add an extra "\usepackage{babel}" statement at
201 the beginning of your preamble.
203 http://bugzilla.lyx.org/show_bug.cgi?id=315