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Reply-To:	Brian DOT Inglis AT SystematicSw DOT ab DOT ca
Subject:	Re: Cygwin alongside WSL
To:	cygwin AT cygwin DOT com
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From:	Brian Inglis <Brian DOT Inglis AT SystematicSw DOT ab DOT ca>
Message-ID:	<131843e7-1ee5-f9fc-8d75-2767172a51f2@SystematicSw.ab.ca>
Date:	Thu, 26 Oct 2017 10:57:17 -0600
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On 2017-10-26 10:13, Brian Inglis wrote:
> On 2017-10-25 15:18, Thomas Wolff wrote:
>> Am 25.10.2017 um 20:30 schrieb Brian Inglis:
>>> On 2017-10-25 11:27, Brian Inglis wrote:
>>>> On 2017-10-25 00:29, Thomas Wolff wrote:
>>>>> Am 25.10.2017 um 00:19 schrieb Angelo Graziosi:
>>>>>> Thomas Wolff wrote:
>>>>>>> Mintty 2.8.0 simplifies WSL integration a lot.
>>>>>>> In Cygwin, you can simply start e.g. mintty --WSL=Ubuntu (add -~ to start in
>>>>>>> the WSL home).
>>>>>> Does it mean that 2.8.0 does not need wslbridge [*] any more?
>>>>> No, sorry, I forgot to mention that wslbridge would have to be installed
>>>>> in /bin to make this work.
>>>> As it is not a Cygwin package, I have installed wslbridge in /usr/local/bin/,
>>>> which is in the system Path in Windows format, so also in the Cygwin path in
>>>> Unix format - will this work?
>>> Would a symlink, winsymlink, or .lnk as /bin/wslbridge to /usr/local/bin/?
>> Why don't you just try it? Both wslbridge and wslbridge-backend must reside in
>> /bin, hard links will work of course.
> 
> It looks like without the Fall Update --WSL= does not work with either
> no/default distribution found, and the same result with a variety of obvious names:
> 
> 	$ mintty --WSL
> 	Option '--WSL' requires an argument
> 	$ mintty --WSL=
> 	WSL distribution '' not found
> 	Try '--help' for more information
> 	$ mintty --version
> 	mintty 2.8.0 (x86_64-pc-cygwin)
> 	© 2013/2017 Andy Koppe / Thomas Wolff
> 	License GPLv3+: GNU GPL version 3 or later
> 	There is no warranty, to the extent permitted by law.
> 	$ uname -srvmo
> 	CYGWIN_NT-10.0 2.9.0(0.318/5/3) 2017-09-12 10:18 x86_64 Cygwin
> 
> but --help does not even mention --WSL=, and the man page mentions wslconfig
> which is not installed on the system.
> 
> On a legacy install, the only reg values available are:
> 
> $ ls -FR
> /proc/registry/HKEY_CURRENT_USER/SOFTWARE/Microsoft/Windows/CurrentVersion/Lxss/
> /proc/registry/HKEY_CURRENT_USER/SOFTWARE/Microsoft/Windows/CurrentVersion/Lxss/:
> DefaultGid  DefaultUid  DefaultUsername  State
> 
> $ regtool -lpv list \\HKCU\\SOFTWARE\\Microsoft\\Windows\\CurrentVersion\\Lxss
> DefaultUsername (REG_SZ) = "..."
> DefaultUid (REG_DWORD) = 0x000003e8 (1000)
> DefaultGid (REG_DWORD) = 0x000003e8 (1000)
> State (REG_DWORD) = 0x00000001 (1)
> 
> It would be nice if --WSL did the right thing for legacy installs also.
> 
> The problem seems to be in winmain.c on a legacy install, there is no guid, and
> no BasePath, so you return false.

(in getlxssinfo and getlxssdistinfo)

> If the distro name wslname is null or empty, or no DefaultDistribution,
> distribution subkeys, guid, BasePath, or PackageFamilyName, you should take the
> else legacy path, and fake the guid, fake the BasePath variable bp to
> W("%LOCALAPPDATA%\\lxss") and PackageFamilyName variable pn to Bash, and maybe
> also the distro and wslname to Bash.
> 
> Also for longopts --WSL should allow an optional_argument, as there should be no
> distinction between --WSL and --WSL=, they should be parsed as if they were
> --WSL[[ =][distro]], and optional arguments omitted either way, with following
> options also terminating the argument scan.
> 
> I can raise these as issues on github if you prefer to track there?

-- 
Take care. Thanks, Brian Inglis, Calgary, Alberta, Canada

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