Fix index generation error:
ERROR: Metadata for package util-linux-openrc-2.38.1-r0 is too long.
ERROR: Index generation failed: No buffer space available

ref commit 1b3d450d (main/gcc: build against isl25)
ref commit a7825745 (main/isl25: new aport)
ref commit 069b35f9 (main/isl24: remove -dev)

fixes commit 9b8a9d76 (main/gcc: split libstdc++-dev)

This is just backported from upstream.

No additional changes seem to be necessary.

See: https://github.com/Plagman/gamescope/commit/8d03522dcde77c78b0281f5f688f0ca7dbe0ca48

Sören Tempel authored Sep 23, 2022 and Sören Tempel committed Sep 23, 2022

* Fix indention
* Remove no-op subpackages assignment
* Export GO_TEST_TIMEOUT_SCALE as it is otherwise unused

This allows the rebuild against latest rustc too