On Wed, Aug 26, 2020 at 8:31 PM Achim Gratz wrote: > Michael Wild via Cygwin writes: > > Is there a way to disable WSL symlinks when installing Cygwin with > > setup.exe? Problem is that Docker on Windows apparently doesn't support > > them (see https://github.com/moby/moby/issues/41058). I would like to > use a > > custom Docker image for GitHub Actions to reproducibly build my packages > > but am failing to build the base image because of this. > > That description is not very clear. If the symlinks are created during > postinstall, then they should obey the value of CYGWIN environment that > is in effect at that time. If so, then the behaviour should start > appearing with cygwin-3.1.5, which is the first release that has the > code supporting these (and makes them the default). I'm not aware that > the behaviour of setup.exe has changed in that respect recently, but I > haven't checked thoroughly. > > > Regards, > Achim. > > In order to reproduce, run the following commands on Windows:
> docker run --name setup -it mcr.microsoft.com/windows/servercore:10.0.17763.1397-amd64 Once inside the container, run: > powershell PS> $env:CYGWIN=winsymlinks:lnk PS> mkdir \tmp PS> cd \tmp PS> Invoke-WebRequest -Uri https://www.cygwin.com/setup-x86_64.exe -OutFile setup-x86_64.exe PS> .\setup-x86_64.exe -W -n -q -R C:\Cygwin64 -s http://mirrors.kernel.org/sourceware/cygwin/ -P default PS> Wait-Process -Name setup-x86_64 PS> fsutil reparsePoint query C:\cygwin64\dev\fd The last command will output something like: Reparse Tag Value : 0xa000001d Tag value: Microsoft Tag value: Name Surrogate Reparse Data Length: 0x00000011 Reparse Data: 0000: 02 00 00 00 2f 70 72 6f 63 2f 73 65 6c 66 2f 66 ..../proc/self/f 0010: 64 So, the CYGWIN variable got ignored. If you want, you can try to run a Cygwin shell: PS> C:\Cygwin64\bin\bash.exe --login -i For me this works fine. Then, exit the container and try to commit it: PS> exit > exit > docker commit setup cygwin:latest The last command then errors out with: Error response from daemon: re-exec error: exit status 1: output: time="2020-08-26T21:00:55+02:00" level=error msg="hcsshim::ImportLayer - failed failed in Win32: The system cannot find th e path specified. (0x3)" error="hcsshim::ImportLayer - failed failed in Win32: The system cannot find the path specified. (0x3)" importFolderPath="C:\\ProgramData\\Docker\\tmp\\hcs00092524 3" path="\\\\?\\C:\\ProgramData\\Docker\\windowsfilter\\c31ac616438460478e6cc6e5526ee664e620ba4479da433bcabb6d2a76880ef4" hcsshim::ImportLayer - failed failed in Win32: The system cannot find the path specified. (0x3) Does this help diagnosing the problem? Kind regards Michael -- Problem reports: https://cygwin.com/problems.html FAQ: https://cygwin.com/faq/ Documentation: https://cygwin.com/docs.html Unsubscribe info: https://cygwin.com/ml/#unsubscribe-simple
