https://www.mozilla.org/en-US/firefox/95.0/releasenotes/

https://www.mozilla.org/en-US/firefox/releases/

Use Rust 1.59.0.

Remove `MACH_USE_SYSTEM_PYTHON=1` as our [MarIuX Python installation
does not satisfy the version requirements][1]:

    WARNING: You are using pip version 21.3.1; however, version 22.0.4 is available.
    You should consider upgrading via the '/scratch/local/tmp_ft1mxyo/bin/python -m pip install --upgrade pip' command.
    pygenometracks 3.6 requires pytest, which is not installed.
    requests-cache 0.8.1 has requirement attrs<22.0,>=21.2, but you have attrs 19.2.0.
    pygenometracks 3.6 has requirement matplotlib<=3.3.2,>=3.1.1, but you have matplotlib 3.4.3.
    cattrs 1.8.0 has requirement attrs>=20, but you have attrs 19.2.0.
    tensorflow 2.5.0 has requirement flatbuffers~=1.12.0, but you have flatbuffers 2.0.
    tensorflow 2.5.0 has requirement h5py~=3.1.0, but you have h5py 3.4.0.
    tensorflow 2.5.0 has requirement six~=1.15.0, but you have six 1.13.0.
    tensorflow 2.5.0 has requirement typing_extensions~=3.7.4, but you have typing-extensions 3.10.0.0.

[1]: mariux64/pkg-scripts#181

     0:26.43 ERROR: Cannot find a wasi sysroot. Please give its location with --with-wasi-sysroot. Or build with --without-wasm-sandboxed-libraries.

From [Linux From Scratch][1]:

> Using sandboxed wasm libraries has been moved to all builds instead of
> only mozilla automation builds. It requires extra llvm packages and
> was reported to seriously slow the build. Disable it.

[Fedora is doing the same][2], and [*Firefox 95 on POWER*][3] contains
instructions on how to get it to work.

[1]: https://www.linuxfromscratch.org/blfs/view/svn/xsoft/firefox.html
[2]: https://src.fedoraproject.org/rpms/firefox/blob/rawhide/f/firefox-mozconfig
[3]: https://www.talospace.com/2021/12/firefox-95-on-power.html

https://www.mozilla.org/en-US/firefox/releases/

Use Rust 1.61.0 for building.

https://bugzilla.mozilla.org/show_bug.cgi?id=1773630

[Alternative][1]:

    sed -i '/ROOT_CLIP_CHAIN/d' gfx/webrender_bindings/webrender_ffi.h

[1]: https://www.linuxfromscratch.org/blfs/view/svn/xsoft/firefox.html

The profile also pulls in LLVM/clang 13.x, but we have 14.x in MarIuX
proper. Sourcing the profile does not seem to be needed for a successful
build, so remove it.