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Date:	Mon, 31 May 2021 11:54:01 +0300
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To:	Lemures Lemniscati <lemures DOT lemniscati AT gmail DOT com>, cygwin AT cygwin DOT com
Subject:	Re: [ANNOUNCEMENT] Updated: lua-5.3.6-2
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From:	Andrey Repin via Cygwin <cygwin AT cygwin DOT com>
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Cc:	Andrey Repin <anrdaemon AT yandex DOT ru>
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Greetings, Lemures Lemniscati!

> On Mon, 31 May 2021 08:30:56 +0900, Lemures Lemniscati
>> On Mon, 31 May 2021 00:38:57 +0300, Andrey Repin via Cygwin
>> > Greetings, Lemures Lemniscati via Cygwin-announce via Cygwin!
>> > 
>> > > The following packages have been uploaded to the Cygwin distribution:
>> > 
>> > > * lua-5.3.6-2
>> > > * liblua5.3-5.3.6-2
>> > > * liblua-devel-5.3.6-2
>> > 
>> > > * lua-5.3.6-2-src
>> > > * lua-debuginfo-5.3.6-2
>> > 
>> > 
>> > > In this cygwin update, some files come with version number: 
>> > >  e.g: lua5.3.exe, which is symlinked from lua by alternatives.
>> > 
>> > 2021/05/29 18:02:19 running: C:\Programs\Cygwin_64\bin\bash.exe --norc --noprofile "/etc/postinstall/lua.sh"
>> > bash.exe: warning: could not find /tmp, please create!
>> > failed to read link /usr/bin/lua: No such file or directory
>> > failed to link /usr/bin/lua -> /etc/alternatives/lua: No such file or directory
>> > failed to link /usr/bin/luac -> /etc/alternatives/luac: No such file or directory
>> > failed to link /usr/lib/liblua.dll.a -> /etc/alternatives/liblua.dll.a: No such file or directory
>> > failed to link /usr/lib/pkgconfig/lua.pc -> /etc/alternatives/lua.pc: No such file or directory
>> > failed to link /usr/share/man/man1/lua.1.gz -> /etc/alternatives/lua.1.gz: No such file or directory
>> > failed to link /usr/share/man/man1/luac.1.gz -> /etc/alternatives/luac.1.gz: No such file or directory
>> > 2021/05/29 18:02:19 abnormal exit: exit code=2
>> > 
>> > $ cygcheck -vf /etc/postinstall/lua.sh
>> > /etc/postinstall/lua.sh: found in package lua-5.3.6-2
>> > 
>> 
>> Sorry, I cannot reproduce it yet.
>> It seems weird that bash can not find /tmp.
>> But, I don't know it is related to the issue.
>> 
>> > bash.exe: warning: could not find /tmp, please create!

> Sorry, I cannot reproduce it yet.
> It seems weird that bash can not find /tmp.
> But, I don't know it is related to the issue.

I can't understand the /tmp issue either. This is from /etc/fstab :

none /tmp usertemp binary,nouser,posix=1 0 0

> I've partially reproduced it by installing cygwin from scratch
> and selecting base Category and lua-5.3.6-2.
> Now, I've got a failure:

> failed to link /usr/lib/pkgconfig/lua.pc -> /etc/alternatives/lua.pc: No such file or directory

> It seems that a cause of the failure was that a directory
>   /usr/lib/pkgconfig
> was not prepared at that time.

> So, some of the failures pointed out might be avoidable,
> by packaging empty directories into lua-5.3.6-*
>   usr/lib/pkgconfig/

> I'll try it.

> But, this workaround will not enough in order to resolve all the failures...

> Please, Andrey, describe more precisely how to reproduce.

No good idea.

My upgrade path was

5.3.5-1 -> 5.3.6-1 -> 5.3.6-2

Trying to follow manually

# /usr/sbin/alternatives --install /usr/bin/lua lua /usr/bin/lua5.3 503 --verbose --test
reading /var/lib/alternatives/lua
auto
/usr/bin/lua

/usr/bin/lua5.3
503
would link /usr/bin/lua -> /etc/alternatives/lua
would link /etc/alternatives/lua -> /usr/bin/lua5.3

It seems "alternatives" is trying to create links to nonexistent files.
Which is not possible under Windows.

Manually creating source link let the thing go

# ln -fsT /usr/bin/lua5.3 /etc/alternatives/lua
# /usr/sbin/alternatives --install /usr/bin/lua lua /usr/bin/lua5.3 503 --verbose
reading /var/lib/alternatives/lua


-- 
With best regards,
Andrey Repin
Monday, May 31, 2021 11:17:02

Sorry for my terrible english...


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