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 <1556306539 DOT 20250513160643 AT yandex DOT ru>
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Date: Tue, 13 May 2025 15:32:53 +0200
Message-ID: <CA+1jF5pUBDkXOd=96SD2RJBpT3HO2kh7cXAZMWXv-XMDWMmbyQ@mail.gmail.com>
Subject: Re: Using Cygwin installation on network share in CI fails
To: cygwin AT cygwin DOT com
From: =?utf-8?q?Aur=C3=A9lien_Couderc_via_Cygwin?= <cygwin AT cygwin DOT com>
Reply-To: =?UTF-8?Q?Aur=C3=A9lien_Couderc?= <aurelien DOT couderc2002 AT gmail DOT com>
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On Tue, May 13, 2025 at 3:20 PM Andrey Repin <anrdaemon AT yandex DOT ru> wrote:
>
> Greetings, Aurélien Couderc!
>
> > Cygwin:
>
> > Using Cygwin install on network share in CI fails.
> > This seems to be a recent regression, as this was working a year before.
>
> > Now on Windows 10 with Cygwin 3.6.1 it fails with error 127.
>
> > Test case, using cmd.exe:
>
> > curl --remote-name "https://www.cygwin.com/setup-x86_64.exe"
> > .\setup-x86_64.exe -q --no-write-registry --no-admin --root %cd%
> > --no-desktop --site "https://mirrors.kernel.org/sourceware/cygwin"
> > .\bin\bash.exe -c 'ls -l ; echo $?'
>
> > Expected result:
> > ls -l output, with exit code 0
>
> > Actual result:
> > exit code 127
>
> > I am not good in debugging Cygwin, but it looks like .\bin\cygwin1.dll
> > just gives up at some point.
>
> Wait-wait-wait.
> You are installing Cygwin TO a network share of the Cygwin distribution is
> located on a share and you are installing it to a local drive?
>
> The latter is possible, the former is a very, very, VERY BAD IDEA.

We always install Cygwin on a network drive, the CI runs as a separate
user and the IT department does not install Cygwin on the machines
itself. The test machines also do not have local users, all users come
from N:, and have their home dirs on N: (Windows network share).

To clarify:
REM N: is a Windows network drive
REM Replace YYYYMMDDHHMMSS_INDEX with year, month, day, hour, minute,
second and index number of test
mkdir  N:\ci\runYYYYMMDDHHMMSS_INDEX
cd N:\ci\runYYYYMMDDHHMMSS_INDEX
REM install Cygwin for this test
.\setup-x86_64.exe -q --no-write-registry --no-admin --root %cd%
--no-desktop --site "https://mirrors.kernel.org/sourceware/cygwin"
REM run tests
.\bin\bash.exe -c 'ls -l ; echo $?'

This has been working since at least 2021 (Cygwin 3.3.0), but my
colleagues tell me that this even worked in 2016.

Aurélien
-- 
Aurélien Couderc <aurelien DOT couderc2002 AT gmail DOT com>
Big Data/Data mining expert, chess enthusiast

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