The docs already told users where to get it — the Bazzite sysext, an Arch
package, a NixOS option — and none of the three were true. `rpm.yml` built the
sysext without ever passing `--gamescope`, `arch.yml` did not know the PKGBUILD
existed, and the nix derivation had never been evaluated once.
Evaluating it found its central assumption wrong: `gamescope.unwrapped` does
not exist on current nixpkgs, where `gamescope` IS the buildable derivation, so
the override threw on every build. It now prefers `.unwrapped` where a future
nixpkgs wraps it and checks the RESULT is patchable — `overrideAttrs` on a
symlinkJoin succeeds and does nothing, which would install an UNPATCHED
gamescope under a name the host reads as a promise of HDR.
Both it and the PKGBUILD had also drifted to a stale patch list: two patches
named where three exist, one of them under the level-1 filename retired when
the cursor patch landed. Both read the patch directory now, so the list cannot
go stale again. The PKGBUILD additionally delegates the whole build to
`build-punktfunk-gamescope.sh` rather than re-deriving the meson invocation —
its copy had already lost `force_fallback_for=wlroots`, and unlike Fedora 43,
Arch ships wlroots, so that package would have linked it shared and shipped a
binary that starts only on machines carrying the dev library. It asserts its
own pinned rev matches the script's, the one thing makepkg needs statically.
Both CI builds are cached on `packaging/gamescope/**`, which is the only reason
this is affordable: that tree depends on nothing else in the repo, so a normal
push restores a binary instead of spending ten minutes on someone else's C++.
And both are best-effort. punktfunk works without this binary — SDR on the
gamescope backend, which is what every release before this one did — so a
hiccup building gamescope must not cost the packages those workflows exist to
publish. A failure warns and is never cached, so the next run retries.
`rpm.yml` also installs Fedora's own gamescope for its runtime libraries: the
sysext verifies our binary by executing `--version`, and on a cache hit nothing
else in the job would have pulled libavif/luajit/seatd in.
Verified by evaluating and patch-phase-building the nix derivation against
nixos-unstable: all three patches apply to nixpkgs' already-patched 3.16.25
tree, and the banner stamps +pfhdr2.
Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com>
enricobuehlerandClaude Opus 5
c801465469