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chore(nixos): guard the nix and xdg-desktop-portal-wlr pins at eval time
WA-023 warns once nixVersions.stable reaches 2.35; WA-046 fails the build once nixpkgs' xdg-desktop-portal-wlr is no longer the broken 0.8.4, so both pins get revisited instead of lingering. Assisted-by: Claude Code (claude-opus-5-5)
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@@ -22,7 +22,7 @@ A version or revision pinned for a reason that can go away.
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| WA-006 | `nixpkgs-blender` — `flake.nix` | Blender 5.2 LTS + CUDA/OptiX pin; keeps `just up` from triggering a full source rebuild | Bump deliberately when needed; drop the pin if the current nixpkgs build is acceptable | 2026-07-24 | deliberate | active |
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| WA-020 | `fcitx5-vinput` pinned to release tag `v2.4.2` — `flake.nix`; consumer `home/linux/gui/base/vinput/default.nix` | Tracks a release tag instead of a branch, so `just up` stays on that release | Bump to a newer release tag when its changes are wanted | 2026-10-04 | on vinput release | active |
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| WA-021 | `nix-x86-on-aarch64` input — our fork of rowanG077's patched FEX + muvm runtime — `flake.nix`; `hosts/12kingdoms-shoukei/game/` | FEX does not support 16K pages, so x86/x86_64 apps and games on shoukei need this pinned flake's 4K-page microVM runtime; our fork lets upstream changes be reviewed before use | Drop once FEX supports 16K pages directly, or nixpkgs/nixos-apple-silicon ships an equivalent runtime | 2026-10-07 | on FEX/nixpkgs/muvm update | active |
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| WA-023 | `nix.package = pkgs.nixVersions.latest` — `modules/nixos/base/nix.nix` | NixOS is opted into Nix 2.35 (2.35.3), which nixpkgs ships as `nixVersions.latest`, while `nixVersions.stable` is still 2.34 (2.34.9) | Drop the override and fall back to the default `pkgs.nix` once `nixVersions.stable` is 2.35 or newer | 2026-10-07 | next nixpkgs bump | active |
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| WA-023 | `nix.package = pkgs.nixVersions.latest` — `modules/nixos/base/nix.nix` | NixOS is opted into Nix 2.35 (2.35.3), which nixpkgs ships as `nixVersions.latest`, while `nixVersions.stable` is still 2.34 (2.34.9) | Drop the override and fall back to the default `pkgs.nix` once `nixVersions.stable` is 2.35 or newer | 2026-10-07 | eval warning | active |
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| WA-037 | `nixpkgs-npu` input pinned to `2ddccb854d89` — the `openvino-npu-compiler` branch of `ryan4yin/nixpkgs`, carrying [NixOS/nixpkgs#570230](https://github.com/NixOS/nixpkgs/pull/570230) — `flake.nix`; consumer `pkgs-npu` in `outputs/default.nix`, `hosts/idols-aquamarine/asr.nix` | The Intel NPU compiler, and the driver change that loads it, are unmerged, so the NPU driver the Whisper service needs comes from that branch | Drop the input and load `intel-npu-driver` from `nixos-unstable` once #570230 merges | 2026-10-17 | when #570230 merges | active |
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## Workarounds
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@@ -47,7 +47,7 @@ A setting that works around a bug or a hardware quirk.
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| WA-039 | niri's NVIDIA free-buffer pool bounded (`GLVidHeapReuseRatio` 0) — `hosts/idols-ai/hardware-nvidia.nix` | the driver does not return freed vidmem buffers to its free pool, so niri's VRAM grows to ~1.1 GiB instead of the ~100 MiB its NVIDIA notes expect (measured 1137 MiB after 24 h uptime; [NVIDIA/egl-wayland#126](https://github.com/NVIDIA/egl-wayland/issues/126)) | Drop once a driver stops growing niri's VRAM without the profile, or niri ships its own default | 2026-10-19 | on an nvidia driver bump | active |
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| WA-041 | Monitor OSD "no-signal auto power-off" disabled — no code in this repo (the P32A2V OSD setting) | during a DPMS-off idle the panel drops and re-adds HPD every ~13 s, and after wake niri keeps scanning out while the panel stays dark until the monitor is power cycled; the panel's own auto power-off drives that state, so it is now disabled. Pinning the mode to 120 Hz did not change the symptom | Drop once a driver retrains the DP link after a DPMS wake, the monitor firmware stops cycling HPD, or this monitor is replaced | 2026-10-21 | confirm on the next full idle cycle, then on an nvidia or monitor firmware update | active |
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| WA-042 | Colmena nodes set `system.nixos.versionSuffix` and `revision` from the flake's lib — `outputs/default.nix` (`rawColmenaHive`) | Colmena evaluates each node with nixpkgs' `eval-config.nix` and plain lib, which reports `26.11pre-git`, so without the override a Colmena deploy differs from the `nixosConfigurations` toplevel; the `colmena-parity` eval test guards the match | Drop once Colmena evaluates nodes with the flake's lib or accepts `nixosConfigurations` directly, keeping `colmena-parity` green | 2026-10-21 | on a colmena bump | active |
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| WA-046 | xdg-desktop-portal-wlr pinned to 0.8.2 — `modules/nixos/desktop/xdg.nix` | niri's GNOME ScreenCast path exposes only DMA-BUF with modifiers, which Zoom 7.2.1 rejects; xdg-desktop-portal-wlr 0.8.2 provides the working SHM path, while 0.8.4 regresses Zoom's SelectSources. | Drop once niri's ScreenCast path works with Zoom or xdg-desktop-portal-wlr 0.8.4+ is fixed. | 2026-10-31 | on xdg-desktop-portal-wlr or Zoom updates | active |
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| WA-046 | xdg-desktop-portal-wlr pinned to 0.8.2 — `modules/nixos/desktop/xdg.nix` | niri's GNOME ScreenCast path exposes only DMA-BUF with modifiers, which Zoom 7.2.1 rejects; xdg-desktop-portal-wlr 0.8.2 provides the working SHM path, while 0.8.4 regresses Zoom's SelectSources. | Drop once niri's ScreenCast path works with Zoom or xdg-desktop-portal-wlr 0.8.4+ is fixed. | 2026-10-31 | eval assertion, or on a Zoom update | active |
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| WA-048 | Nixpak GUI fontconfig comes from the host — `hardening/nixpaks/modules/desktop-base.nix` | Nixpak normally generates a standalone `/etc/fonts` and font package list for each sandbox; that bypasses the host `defaultFonts` and made browser chrome, Telegram, QQ and other sandboxed apps choose a different CJK fallback from the host. The wrapper now disables Nixpak fonts and bind-mounts `/etc/static/fonts` at `/etc/fonts`, so sandboxed GUI apps reuse the host font packages and family preferences through the already-mounted `/nix/store`. | Drop once Nixpak can directly reuse the host fontconfig or no longer overrides `/etc/fonts`, then remove the bind and restore the library-supported configuration path | 2026-11-01 | on a nixpak update | active |
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If the KINGBANK KP260 NVMe freezes on `ai` recur (formerly WA-008, now back at the kernel's APST
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@@ -4,6 +4,7 @@
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# the latest released version until stable catches up.
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# https://github.com/NixOS/nixpkgs/blob/nixos-unstable/pkgs/tools/package-management/nix/default.nix
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nix.package = pkgs.nixVersions.latest;
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warnings = lib.optional (lib.versionAtLeast pkgs.nixVersions.stable.version "2.35") "nixVersions.stable is 2.35+: drop the nixVersions.latest override (WA-023)";
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# https://lix.systems/add-to-config/
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# nix.package = pkgs.lix;
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@@ -62,6 +62,12 @@
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pkgs-stable.xdg-desktop-portal-wlr
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];
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};
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assertions = [
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{
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assertion = pkgs.xdg-desktop-portal-wlr.version == "0.8.4";
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message = "nixpkgs moved xdg-desktop-portal-wlr past 0.8.4: retest Zoom with it and drop the 0.8.2 pin (WA-046)";
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}
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];
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# The xdg-autostart-generator starts every autostart app (including nixpak
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# sandboxes like firefox/telegram) right at graphical-session.target, while
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