<div dir="ltr"><div class="gmail_quote"><div dir="ltr" class="gmail_attr">On Thu, 11 Feb 2021 at 20:05, Richard Kimberly Heck <<a href="mailto:rikiheck@lyx.org">rikiheck@lyx.org</a>> wrote:<br></div><blockquote class="gmail_quote" style="margin:0px 0px 0px 0.8ex;border-left:1px solid rgb(204,204,204);padding-left:1ex">
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<div>On 2/11/21 11:02 AM, Yu Jin wrote:<br>
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<div dir="ltr" class="gmail_attr">Am Do., 11. Feb. 2021 um
00:02 Uhr schrieb Richard Kimberly Heck <<a href="mailto:rikiheck@lyx.org" target="_blank">rikiheck@lyx.org</a>>:<br>
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<div>On 2/10/21 4:28 PM, Yu Jin wrote:<br>
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<div dir="ltr" class="gmail_attr">Am Mi., 10. Feb.
2021 um 20:23 Uhr schrieb Richard Kimberly Heck
<<a href="mailto:rikiheck@lyx.org" target="_blank">rikiheck@lyx.org</a>>:<br>
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<div>On 2/10/21 2:14 PM, Thibaut Cuvelier wrote:<br>
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<div dir="ltr" class="gmail_attr">On Wed,
10 Feb 2021 at 18:34, José Abílio Matos
<<a href="mailto:jamatos@lyx.org" target="_blank">jamatos@lyx.org</a>>
wrote:<br>
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<blockquote class="gmail_quote" style="margin:0px 0px 0px 0.8ex;border-left:1px solid rgb(204,204,204);padding-left:1ex">On
Wednesday, February 10, 2021 12:48:17 PM
WET Thibaut Cuvelier wrote:<br>
> @José : reconfiguring LyX does not
solve the problem. It really looks like<br>
> it cannot find Python.<br>
<br>
We did not change the python detection
code since alpha-1... :-(<br>
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<div>However, this must be the cause of
the problems. I just tried adding Python
to the PATH environment variable, and
everything worked perfectly. <br>
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<div>Maybe LyX is tricked in some way by
the python.exe that Microsoft puts in
the PATH? (It's not a real Python, just
something that tells you how to install
it.) With this, you can start "a Python
executable", but it will not execute any
script (I believe it always returns an
error code).<br>
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<p>That may be. Where do we record what Python
we found?<br>
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<p>If so, then the solution would be to try
running some simple Python file using whatever
we find and see if that works. E.g. run the
program "1;".</p>
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<div>I have contributed some lines to python
recognition on windows (<a href="https://www.lyx.org/trac/ticket/11712" target="_blank">https://www.lyx.org/trac/ticket/11712</a>):
But because of what was written by Thibaut (adding
Python to PATH), it looks to me that the failure
is not in this function but in rather LyX failing
to add path prefix. I can also reproduce this btw.
I have checked the path prefix in the settings,
all is done right there. But even if I add python
dir to PATH, it then will not find other
dependencies (imagemagik and ghostscript).<br clear="all">
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<p>I would try reverting all the changes to configure.py
since alpha 1 and see if that fixes the problem. We did
not get this report with alpha 1. These are:</p>
<p> f7beed1e<br>
e95513c8<br>
9d4ffac7<br>
e3fe4d65<br>
daa6f143<br>
c0fe2522<br>
af49df00<br>
738dccbf</p>
<p>If that helps, then add them back one at a time and
find the culprit.</p>
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<div>Will be pointless imo, it's not the script's fault that
python is not found. The fault is to be searched in the part
of code which adds the prefix path to the environment, which
part would that be?</div>
<div>After all when installing, the installer adds the prefix
path to its environment too on runtime while installing and
then calls the script, it is successful then.<br clear="all">
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<p>I would guess it is os::find_python_binary. But it has not been
touched in a long time.<br></p></div></blockquote><div>It's highly likely that it does. On Windows, the first thing this function checks is `py -3`, but I haven't seen any py binary in a long time (although I've been using the Anaconda Python distribution for quite some time). <br></div></div></div>