Fink 10.15 & Xcode

Hello again Fink Developers,

Thanks to Remko for summarizing the situation regarding Fink 10.15 and the read-only root filesystem issue. I like the idea of a 10.15 tree pointing to /opt/sw…

I wanted to relate an additional issue when building Fink packages under 10.15 (now developer-beta 6): Xcode weirdness.

1) I installed the Xcode 11 CommandLineTools via “xcode-select —install” (version: 11.0.0.0.1.1565314599)

2) I downloaded the Xcode 11-beta #6 app (version: 11M392q)

3) I pointed to the Xcode 11-beta app:
   xcode-select -s /Applications/Xcode-beta.app

4) This confuses Fink into thinking the CLI isn’t there:

fink install XXX

Scanning package description files..........
Information about 11434 packages read in 9 seconds.

Failed: 
The Xcode Command Line Tools need to be (re)installed. 
Execute 'sudo xcode-select --install' to obtain them.

5) In order to install new packages via Xcode 11, it was necessary to point back to the CLI via:
   xcode-select -s /Library/Developer/CommandLineTools

6) The weirdness is that some packages, e.g. python27, required the Xcode 11-beta app to be in /Applications;
   Other packages, e.g. gmp5 (needed by gcc8), require Xcode 10.3 to be in /Applications & pointed to by xcode-select -s

Something strange is going on with the Xcode 11-beta app, not being properly recognized by Fink.

Sorry for the excruciating level of detail, and I hope the issue is understandable. Basically to get to the finish line, installing gcc8 and gmt5 (which requires many additional packages & libraries) I had to switch versions of the Xcode app between 10.3 & 11.0 at various times in order to succeed.

Thanks for your advice,
John

> On Aug 20, 2019, at 04:54, Remko Scharroo <[email protected]> wrote:
> 
> Dear developers,
> 
> I would like to synthesize a few issues that came up.
> 
> 1) Using /sw on 10.15 would require disabling SIP and then either change the permissions on / or mount as rw. Either way, I think disabling SIP would be a no-go territory for Fink, so /sw would need to be forsaken.
> 
> 2) The directory /opt appears to be available, as John points out. Then we have the choice for /opt/sw or /opt/Fink. But since we already have a directory /sw/fink I do not think it would be nice to translate that to /opt/Fink/fink; too much "fink". So I too vote for /opt/sw.
> 
> 3) As Alexander suggests, we should likely disallow alternative locations to /opt/sw. This would be a small change to fink (the program). However, I would urge to keep supporting locations in ~, since some fink users may not have admin privileges (I actually do not know if that works). So the check would need to be whether the %p directory can be created, with /opt/sw the default.
> 
> 4) With a new standard location, I suspect that we would need a new package tree 10.15. We could no longer continue the 10.9-libcxx tree because then we would have mixed binaries in the 10.15/stable/main/binary-darwin-x86_64 tree; some with /sw, some with /opt/sw
> 
> 5) Creating a new tree 10.15 has its advantages. a) Justin can easily pull in his big PR, without disturbing 10.9-libcxx. b) We can remove all the "Distribution:" lines in that tree. c) John can submit PRs for any other changes he already needed to make. d) A new fink can be put in there too, though the only change is likely what I mentioned in 3) above. e) All this development can start from now on (provided the 10.15 tree is created) so we can be ready when 10.15 gets officially released.
> 
> 6) Those in the development of the 10.15 tree can use the suggestions by John and others and create a link /sw -> /opt/sw so they can use the old binaries for the time being.
> 
> These are just a few thoughts as an introduction to the way forward. Of course, I may be wrong about some elements, and open for suggestions.
> 
> Let's hear what you all think.
> 
> Regards,
> Remko


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