jhbuild libraries, Python pip module, etc

[totaam]

First, you may want to consider switching to libjpeg-turbo as the libjpeg, this commit does that: Xpra-org@b57ba2e
Every distribution that I know of, including MSYS2, Android, etc.. have done so. So there are no compatibility problems with any of the other libraries.
It's not just faster, it is also properly maintained - security updates, etc.
The only problem with that is cmake seems to use rpath in the library's self reference: Xpra-org#19
Is this a MacOS or jhbuild issue? Or should I report it to libjpeg-turbo instead?

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I have a long list of Python modules that are installed using a jhbuild moduleset: https://github.com/Xpra-org/gtk-osx-build/blob/master/xpra-python3.modules
Some of the Python libraries no longer support distutils, and have to be installed using pip.
What would be the best way of doing this using jhbuild? Abusing autogen?

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Doing full rebuilds, I hit some issues with gtk-doc requiring pygments, strangely enough this did not resolve the problem: Xpra-org@8ca5900
(pygments would also need this: Xpra-org@96f36b3)
Has anyone else seen that?

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I got bitten by the magic value python3 which was missing from my list of modules... and then jhbuild ended up building things against the pipenv Python instead of the one I wanted.
Would you take a PR to add a note to the documentation at https://github.com/jralls/gtk-osx-build#python-configuration ?
(and also update the Python version on that page)

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One more jhbuild question: how do I get autotools to run:

cd xar
./autogen.sh ....

I tried: <autotools id="xar" autogen-sh="cd xar;./autogen.sh" supports-non-srcdir-builds="no"> but that got mangled.
Surely there is an easier way of doing this?

[jralls]

A lot of questions!

Last one first, use autogen-template to customize the build commands for a module, see autotools in https://developer-old.gnome.org/jhbuild/stable/moduleset-syntax.html.en#moduleset-syntax-defs. But IIUC what's going on

    <autotools id="xar" supports-non-srcdir-builds="no" autogen-sh="autogen.sh">

should do that without needing an autogen-template attribute.

[jralls]

Would you take a PR to add a note to the documentation at https://github.com/jralls/gtk-osx-build#python-configuration ?

It needs to be added to https://wiki.gnome.org/Projects/GTK/OSX/Building too. Getting edit on the Gnome wiki can be a pain so probably better if I do it.

[jralls]

Some of the Python libraries no longer support distutils, and have to be installed using pip.
What would be the best way of doing this using jhbuild? Abusing autogen?

distutils is deprecated in Python 3.10 and removed in 3.12. The best way to fix it would be to create a setuptools module for jhbuild; although I'm a little leery of PyPI because of all of the supplychainattacks I guess a PIP module would also be a nice addition.

Failing (or pending) that I think cmake is easier to abuse than autotools. For example I've used it to wrap boost-jam.

[jralls]

First, you may want to consider switching to libjpeg-turbo as the libjpeg, this commit does that: Xpra-org@b57ba2e
Every distribution that I know of, including MSYS2, Android, etc.. have done so. So there are no compatibility problems with any of the other libraries.
It's not just faster, it is also properly maintained - security updates, etc.
The only problem with that is cmake seems to use rpath in the library's self reference: Xpra-org#19
Is this a MacOS or jhbuild issue? Or should I report it to libjpeg-turbo instead?

PR welcome ;-)

As for rpath, I added handling that to bundler last spring. Did you have that in place when you experienced the problem?

To get cmake to set the install name you can try adding -DCMAKE_MACOSX_RPATH=ON -DCMAKE_INSTALL_NAME_DIR=%{prefix}s to cmakeargs; I'm not sure that cmakeargs understands the %{prefix}s substitution though so you may need to code it in jhbuildrc-custom using cmakeargs-module.